/*
- * Copyright (C) 2005-2007 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2005-2011 Red Hat, Inc. All rights reserved.
*
* This file is part of the device-mapper userspace tools.
*
#define MAX_TARGET_PARAMSIZE 500000
-/* FIXME Fix interface so this is used only by LVM */
-#define UUID_PREFIX "LVM-"
+#define REPLICATOR_LOCAL_SITE 0
/* Supported segment types */
enum {
SEG_ERROR,
SEG_LINEAR,
SEG_MIRRORED,
+ SEG_REPLICATOR,
+ SEG_REPLICATOR_DEV,
SEG_SNAPSHOT,
SEG_SNAPSHOT_ORIGIN,
SEG_SNAPSHOT_MERGE,
SEG_STRIPED,
SEG_ZERO,
+ SEG_THIN_POOL,
+ SEG_THIN,
+ SEG_RAID1,
+ SEG_RAID4,
+ SEG_RAID5_LA,
+ SEG_RAID5_RA,
+ SEG_RAID5_LS,
+ SEG_RAID5_RS,
+ SEG_RAID6_ZR,
+ SEG_RAID6_NR,
+ SEG_RAID6_NC,
+ SEG_LAST,
};
/* FIXME Add crypt and multipath support */
{ SEG_ERROR, "error" },
{ SEG_LINEAR, "linear" },
{ SEG_MIRRORED, "mirror" },
+ { SEG_REPLICATOR, "replicator" },
+ { SEG_REPLICATOR_DEV, "replicator-dev" },
{ SEG_SNAPSHOT, "snapshot" },
{ SEG_SNAPSHOT_ORIGIN, "snapshot-origin" },
{ SEG_SNAPSHOT_MERGE, "snapshot-merge" },
{ SEG_STRIPED, "striped" },
{ SEG_ZERO, "zero"},
+ { SEG_THIN_POOL, "thin-pool"},
+ { SEG_THIN, "thin"},
+ { SEG_RAID1, "raid1"},
+ { SEG_RAID4, "raid4"},
+ { SEG_RAID5_LA, "raid5_la"},
+ { SEG_RAID5_RA, "raid5_ra"},
+ { SEG_RAID5_LS, "raid5_ls"},
+ { SEG_RAID5_RS, "raid5_rs"},
+ { SEG_RAID6_ZR, "raid6_zr"},
+ { SEG_RAID6_NR, "raid6_nr"},
+ { SEG_RAID6_NC, "raid6_nc"},
+
+ /*
+ *WARNING: Since 'raid' target overloads this 1:1 mapping table
+ * for search do not add new enum elements past them!
+ */
+ { SEG_RAID5_LS, "raid5"}, /* same as "raid5_ls" (default for MD also) */
+ { SEG_RAID6_ZR, "raid6"}, /* same as "raid6_zr" */
+ { SEG_LAST, NULL },
};
/* Some segment types have a list of areas of other devices attached */
struct dm_tree_node *dev_node;
uint64_t offset;
+
+ unsigned rsite_index; /* Replicator site index */
+ struct dm_tree_node *slog; /* Replicator sync log node */
+ uint64_t region_size; /* Replicator sync log size */
+ uint32_t flags; /* Replicator sync log flags */
+};
+
+struct dm_thin_message {
+ dm_thin_message_t type;
+ union {
+ struct {
+ uint32_t device_id;
+ uint32_t origin_id;
+ } m_create_snap;
+ struct {
+ uint32_t device_id;
+ } m_create_thin;
+ struct {
+ uint32_t device_id;
+ } m_delete;
+ struct {
+ uint64_t current_id;
+ uint64_t new_id;
+ } m_set_transaction_id;
+ } u;
+};
+
+struct thin_message {
+ struct dm_list list;
+ struct dm_thin_message message;
+ int expected_errno;
+};
+
+/* Replicator-log has a list of sites */
+/* FIXME: maybe move to seg_area too? */
+struct replicator_site {
+ struct dm_list list;
+
+ unsigned rsite_index;
+ dm_replicator_mode_t mode;
+ uint32_t async_timeout;
+ uint32_t fall_behind_ios;
+ uint64_t fall_behind_data;
};
/* Per-segment properties */
uint64_t size;
- unsigned area_count; /* Linear + Striped + Mirrored + Crypt */
- struct dm_list areas; /* Linear + Striped + Mirrored + Crypt */
+ unsigned area_count; /* Linear + Striped + Mirrored + Crypt + Replicator */
+ struct dm_list areas; /* Linear + Striped + Mirrored + Crypt + Replicator */
- uint32_t stripe_size; /* Striped */
+ uint32_t stripe_size; /* Striped + raid */
int persistent; /* Snapshot */
uint32_t chunk_size; /* Snapshot */
struct dm_tree_node *origin; /* Snapshot + Snapshot origin */
struct dm_tree_node *merge; /* Snapshot */
- struct dm_tree_node *log; /* Mirror */
- uint32_t region_size; /* Mirror */
+ struct dm_tree_node *log; /* Mirror + Replicator */
+ uint32_t region_size; /* Mirror + raid */
unsigned clustered; /* Mirror */
unsigned mirror_area_count; /* Mirror */
uint32_t flags; /* Mirror log */
const char *iv; /* Crypt */
uint64_t iv_offset; /* Crypt */
const char *key; /* Crypt */
+
+ const char *rlog_type; /* Replicator */
+ struct dm_list rsites; /* Replicator */
+ unsigned rsite_count; /* Replicator */
+ unsigned rdevice_count; /* Replicator */
+ struct dm_tree_node *replicator;/* Replicator-dev */
+ uint64_t rdevice_index; /* Replicator-dev */
+
+ uint64_t rebuilds; /* raid */
+
+ struct dm_tree_node *metadata; /* Thin_pool */
+ struct dm_tree_node *pool; /* Thin_pool, Thin */
+ struct dm_list thin_messages; /* Thin_pool */
+ uint64_t transaction_id; /* Thin_pool */
+ uint64_t low_water_mark; /* Thin_pool */
+ uint32_t data_block_size; /* Thin_pool */
+ unsigned skip_block_zeroing; /* Thin_pool */
+ uint32_t device_id; /* Thin */
+
};
/* Per-device properties */
struct dm_list segs;
const char *new_name;
+
+ /* If immediate_dev_node is set to 1, try to create the dev node
+ * as soon as possible (e.g. in preload stage even during traversal
+ * and processing of dm tree). This will also flush all stacked dev
+ * node operations, synchronizing with udev.
+ */
+ unsigned immediate_dev_node;
+
+ /*
+ * If the device size changed from zero and this is set,
+ * don't resume the device immediately, even if the device
+ * has parents. This works provided the parents do not
+ * validate the device size and is required by pvmove to
+ * avoid starting the mirror resync operation too early.
+ */
+ unsigned delay_resume_if_new;
+
+ /* Send messages for this node in preload */
+ unsigned send_messages;
};
/* Two of these used to join two nodes with uses and used_by. */
struct dm_tree_node {
struct dm_tree *dtree;
- const char *name;
- const char *uuid;
- struct dm_info info;
+ const char *name;
+ const char *uuid;
+ struct dm_info info;
- struct dm_list uses; /* Nodes this node uses */
- struct dm_list used_by; /* Nodes that use this node */
+ struct dm_list uses; /* Nodes this node uses */
+ struct dm_list used_by; /* Nodes that use this node */
int activation_priority; /* 0 gets activated first */
void *context; /* External supplied context */
struct load_properties props; /* For creation/table (re)load */
+
+ /*
+ * If presuspend of child node is needed
+ * Note: only direct child is allowed
+ */
+ struct dm_tree_node *presuspend_node;
+
+ /* Callback */
+ dm_node_callback_fn callback;
+ void *callback_data;
};
struct dm_tree {
struct dm_hash_table *uuids;
struct dm_tree_node root;
int skip_lockfs; /* 1 skips lockfs (for non-snapshots) */
- int no_flush; /* 1 sets noflush (mirrors/multipath) */
+ int no_flush; /* 1 sets noflush (mirrors/multipath) */
+ int retry_remove; /* 1 retries remove if not successful */
uint32_t cookie;
};
+/*
+ * Tree functions.
+ */
struct dm_tree *dm_tree_create(void)
{
+ struct dm_pool *dmem;
struct dm_tree *dtree;
- if (!(dtree = dm_malloc(sizeof(*dtree)))) {
- log_error("dm_tree_create malloc failed");
+ if (!(dmem = dm_pool_create("dtree", 1024)) ||
+ !(dtree = dm_pool_zalloc(dmem, sizeof(*dtree)))) {
+ log_error("Failed to allocate dtree.");
+ if (dmem)
+ dm_pool_destroy(dmem);
return NULL;
}
- memset(dtree, 0, sizeof(*dtree));
dtree->root.dtree = dtree;
dm_list_init(&dtree->root.uses);
dm_list_init(&dtree->root.used_by);
dtree->skip_lockfs = 0;
dtree->no_flush = 0;
-
- if (!(dtree->mem = dm_pool_create("dtree", 1024))) {
- log_error("dtree pool creation failed");
- dm_free(dtree);
- return NULL;
- }
+ dtree->mem = dmem;
if (!(dtree->devs = dm_hash_create(8))) {
log_error("dtree hash creation failed");
dm_pool_destroy(dtree->mem);
- dm_free(dtree);
return NULL;
}
log_error("dtree uuid hash creation failed");
dm_hash_destroy(dtree->devs);
dm_pool_destroy(dtree->mem);
- dm_free(dtree);
return NULL;
}
dm_hash_destroy(dtree->uuids);
dm_hash_destroy(dtree->devs);
dm_pool_destroy(dtree->mem);
- dm_free(dtree);
}
+void dm_tree_set_cookie(struct dm_tree_node *node, uint32_t cookie)
+{
+ node->dtree->cookie = cookie;
+}
+
+uint32_t dm_tree_get_cookie(struct dm_tree_node *node)
+{
+ return node->dtree->cookie;
+}
+
+void dm_tree_skip_lockfs(struct dm_tree_node *dnode)
+{
+ dnode->dtree->skip_lockfs = 1;
+}
+
+void dm_tree_use_no_flush_suspend(struct dm_tree_node *dnode)
+{
+ dnode->dtree->no_flush = 1;
+}
+
+void dm_tree_retry_remove(struct dm_tree_node *dnode)
+{
+ dnode->dtree->retry_remove = 1;
+}
+
+/*
+ * Node functions.
+ */
static int _nodes_are_linked(const struct dm_tree_node *parent,
const struct dm_tree_node *child)
{
static int _link_tree_nodes(struct dm_tree_node *parent, struct dm_tree_node *child)
{
/* Don't link to root node if child already has a parent */
- if ((parent == &parent->dtree->root)) {
+ if (parent == &parent->dtree->root) {
if (dm_tree_node_num_children(child, 1))
return 1;
} else
_remove_from_toplevel(child);
- if ((child == &child->dtree->root)) {
+ if (child == &child->dtree->root) {
if (dm_tree_node_num_children(parent, 0))
return 1;
} else
const char *uuid)
{
struct dm_tree_node *node;
+ const char *default_uuid_prefix;
+ size_t default_uuid_prefix_len;
if ((node = dm_hash_lookup(dtree->uuids, uuid)))
return node;
- if (strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1))
+ default_uuid_prefix = dm_uuid_prefix();
+ default_uuid_prefix_len = strlen(default_uuid_prefix);
+
+ if (strncmp(uuid, default_uuid_prefix, default_uuid_prefix_len))
return NULL;
- return dm_hash_lookup(dtree->uuids, uuid + sizeof(UUID_PREFIX) - 1);
+ return dm_hash_lookup(dtree->uuids, uuid + default_uuid_prefix_len);
+}
+
+void dm_tree_node_set_udev_flags(struct dm_tree_node *dnode, uint16_t udev_flags)
+
+{
+ struct dm_info *dinfo = &dnode->info;
+
+ if (udev_flags != dnode->udev_flags)
+ log_debug("Resetting %s (%" PRIu32 ":%" PRIu32
+ ") udev_flags from 0x%x to 0x%x",
+ dnode->name, dinfo->major, dinfo->minor,
+ dnode->udev_flags, udev_flags);
+ dnode->udev_flags = udev_flags;
+}
+
+void dm_tree_node_set_read_ahead(struct dm_tree_node *dnode,
+ uint32_t read_ahead,
+ uint32_t read_ahead_flags)
+{
+ dnode->props.read_ahead = read_ahead;
+ dnode->props.read_ahead_flags = read_ahead_flags;
+}
+
+void dm_tree_node_set_presuspend_node(struct dm_tree_node *node,
+ struct dm_tree_node *presuspend_node)
+{
+ node->presuspend_node = presuspend_node;
+}
+
+const char *dm_tree_node_get_name(const struct dm_tree_node *node)
+{
+ return node->info.exists ? node->name : "";
+}
+
+const char *dm_tree_node_get_uuid(const struct dm_tree_node *node)
+{
+ return node->info.exists ? node->uuid : "";
+}
+
+const struct dm_info *dm_tree_node_get_info(const struct dm_tree_node *node)
+{
+ return &node->info;
+}
+
+void *dm_tree_node_get_context(const struct dm_tree_node *node)
+{
+ return node->context;
+}
+
+int dm_tree_node_size_changed(const struct dm_tree_node *dnode)
+{
+ return dnode->props.size_changed;
+}
+
+int dm_tree_node_num_children(const struct dm_tree_node *node, uint32_t inverted)
+{
+ if (inverted) {
+ if (_nodes_are_linked(&node->dtree->root, node))
+ return 0;
+ return dm_list_size(&node->used_by);
+ }
+
+ if (_nodes_are_linked(node, &node->dtree->root))
+ return 0;
+
+ return dm_list_size(&node->uses);
+}
+
+/*
+ * Returns 1 if no prefix supplied
+ */
+static int _uuid_prefix_matches(const char *uuid, const char *uuid_prefix, size_t uuid_prefix_len)
+{
+ const char *default_uuid_prefix = dm_uuid_prefix();
+ size_t default_uuid_prefix_len = strlen(default_uuid_prefix);
+
+ if (!uuid_prefix)
+ return 1;
+
+ if (!strncmp(uuid, uuid_prefix, uuid_prefix_len))
+ return 1;
+
+ /* Handle transition: active device uuids might be missing the prefix */
+ if (uuid_prefix_len <= 4)
+ return 0;
+
+ if (!strncmp(uuid, default_uuid_prefix, default_uuid_prefix_len))
+ return 0;
+
+ if (strncmp(uuid_prefix, default_uuid_prefix, default_uuid_prefix_len))
+ return 0;
+
+ if (!strncmp(uuid, uuid_prefix + default_uuid_prefix_len, uuid_prefix_len - default_uuid_prefix_len))
+ return 1;
+
+ return 0;
+}
+
+/*
+ * Returns 1 if no children.
+ */
+static int _children_suspended(struct dm_tree_node *node,
+ uint32_t inverted,
+ const char *uuid_prefix,
+ size_t uuid_prefix_len)
+{
+ struct dm_list *list;
+ struct dm_tree_link *dlink;
+ const struct dm_info *dinfo;
+ const char *uuid;
+
+ if (inverted) {
+ if (_nodes_are_linked(&node->dtree->root, node))
+ return 1;
+ list = &node->used_by;
+ } else {
+ if (_nodes_are_linked(node, &node->dtree->root))
+ return 1;
+ list = &node->uses;
+ }
+
+ dm_list_iterate_items(dlink, list) {
+ if (!(uuid = dm_tree_node_get_uuid(dlink->node))) {
+ stack;
+ continue;
+ }
+
+ /* Ignore if it doesn't belong to this VG */
+ if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len))
+ continue;
+
+ /* Ignore if parent node wants to presuspend this node */
+ if (dlink->node->presuspend_node == node)
+ continue;
+
+ if (!(dinfo = dm_tree_node_get_info(dlink->node))) {
+ stack; /* FIXME Is this normal? */
+ return 0;
+ }
+
+ if (!dinfo->suspended)
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * Set major and minor to zero for root of tree.
+ */
+struct dm_tree_node *dm_tree_find_node(struct dm_tree *dtree,
+ uint32_t major,
+ uint32_t minor)
+{
+ if (!major && !minor)
+ return &dtree->root;
+
+ return _find_dm_tree_node(dtree, major, minor);
+}
+
+/*
+ * Set uuid to NULL for root of tree.
+ */
+struct dm_tree_node *dm_tree_find_node_by_uuid(struct dm_tree *dtree,
+ const char *uuid)
+{
+ if (!uuid || !*uuid)
+ return &dtree->root;
+
+ return _find_dm_tree_node_by_uuid(dtree, uuid);
+}
+
+/*
+ * First time set *handle to NULL.
+ * Set inverted to invert the tree.
+ */
+struct dm_tree_node *dm_tree_next_child(void **handle,
+ const struct dm_tree_node *parent,
+ uint32_t inverted)
+{
+ struct dm_list **dlink = (struct dm_list **) handle;
+ const struct dm_list *use_list;
+
+ if (inverted)
+ use_list = &parent->used_by;
+ else
+ use_list = &parent->uses;
+
+ if (!*dlink)
+ *dlink = dm_list_first(use_list);
+ else
+ *dlink = dm_list_next(use_list, *dlink);
+
+ return (*dlink) ? dm_list_item(*dlink, struct dm_tree_link)->node : NULL;
}
static int _deps(struct dm_task **dmt, struct dm_pool *mem, uint32_t major, uint32_t minor,
- const char **name, const char **uuid,
+ const char **name, const char **uuid, unsigned inactive_table,
struct dm_info *info, struct dm_deps **deps)
{
memset(info, 0, sizeof(*info));
if (!dm_is_dm_major(major)) {
- *name = "";
- *uuid = "";
+ if (name)
+ *name = "";
+ if (uuid)
+ *uuid = "";
*deps = NULL;
info->major = major;
info->minor = minor;
- info->exists = 0;
- info->live_table = 0;
- info->inactive_table = 0;
- info->read_only = 0;
return 1;
}
goto failed;
}
+ if (inactive_table && !dm_task_query_inactive_table(*dmt)) {
+ log_error("_deps: failed to set inactive table for (%" PRIu32 ":%" PRIu32 ")",
+ major, minor);
+ goto failed;
+ }
+
if (!dm_task_run(*dmt)) {
log_error("_deps: task run failed for (%" PRIu32 ":%" PRIu32 ")",
major, minor);
}
if (!info->exists) {
- *name = "";
- *uuid = "";
+ if (name)
+ *name = "";
+ if (uuid)
+ *uuid = "";
*deps = NULL;
} else {
if (info->major != major) {
minor, info->minor);
goto failed;
}
- if (!(*name = dm_pool_strdup(mem, dm_task_get_name(*dmt)))) {
+ if (name && !(*name = dm_pool_strdup(mem, dm_task_get_name(*dmt)))) {
log_error("name pool_strdup failed");
goto failed;
}
- if (!(*uuid = dm_pool_strdup(mem, dm_task_get_uuid(*dmt)))) {
+ if (uuid && !(*uuid = dm_pool_strdup(mem, dm_task_get_uuid(*dmt)))) {
log_error("uuid pool_strdup failed");
goto failed;
}
return 0;
}
-static struct dm_tree_node *_add_dev(struct dm_tree *dtree,
- struct dm_tree_node *parent,
- uint32_t major, uint32_t minor,
- uint16_t udev_flags)
+/*
+ * Deactivate a device with its dependencies if the uuid prefix matches.
+ */
+static int _info_by_dev(uint32_t major, uint32_t minor, int with_open_count,
+ struct dm_info *info, struct dm_pool *mem,
+ const char **name, const char **uuid)
{
- struct dm_task *dmt = NULL;
- struct dm_info info;
- struct dm_deps *deps = NULL;
- const char *name = NULL;
- const char *uuid = NULL;
- struct dm_tree_node *node = NULL;
- uint32_t i;
- int new = 0;
+ struct dm_task *dmt;
+ int r;
- /* Already in tree? */
- if (!(node = _find_dm_tree_node(dtree, major, minor))) {
- if (!_deps(&dmt, dtree->mem, major, minor, &name, &uuid, &info, &deps))
- return_NULL;
+ if (!(dmt = dm_task_create(DM_DEVICE_INFO))) {
+ log_error("_info_by_dev: dm_task creation failed");
+ return 0;
+ }
- if (!(node = _create_dm_tree_node(dtree, name, uuid, &info,
- NULL, udev_flags)))
- goto_out;
- new = 1;
+ if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) {
+ log_error("_info_by_dev: Failed to set device number");
+ dm_task_destroy(dmt);
+ return 0;
}
- if (!_link_tree_nodes(parent, node)) {
- node = NULL;
+ if (!with_open_count && !dm_task_no_open_count(dmt))
+ log_error("Failed to disable open_count");
+
+ if (!(r = dm_task_run(dmt)))
+ goto_out;
+
+ if (!(r = dm_task_get_info(dmt, info)))
+ goto_out;
+
+ if (name && !(*name = dm_pool_strdup(mem, dm_task_get_name(dmt)))) {
+ log_error("name pool_strdup failed");
+ r = 0;
goto_out;
}
- /* If node was already in tree, no need to recurse. */
- if (!new)
- goto out;
+ if (uuid && !(*uuid = dm_pool_strdup(mem, dm_task_get_uuid(dmt)))) {
+ log_error("uuid pool_strdup failed");
+ r = 0;
+ goto_out;
+ }
- /* Can't recurse if not a mapped device or there are no dependencies */
- if (!node->info.exists || !deps->count) {
- if (!_add_to_bottomlevel(node)) {
+out:
+ dm_task_destroy(dmt);
+
+ return r;
+}
+
+static int _check_device_not_in_use(const char *name, struct dm_info *info)
+{
+ if (!info->exists)
+ return 1;
+
+ /* If sysfs is not used, use open_count information only. */
+ if (!*dm_sysfs_dir()) {
+ if (info->open_count) {
+ log_error("Device %s (%" PRIu32 ":%" PRIu32 ") in use",
+ name, info->major, info->minor);
+ return 0;
+ }
+
+ return 1;
+ }
+
+ if (dm_device_has_holders(info->major, info->minor)) {
+ log_error("Device %s (%" PRIu32 ":%" PRIu32 ") is used "
+ "by another device.", name, info->major, info->minor);
+ return 0;
+ }
+
+ if (dm_device_has_mounted_fs(info->major, info->minor)) {
+ log_error("Device %s (%" PRIu32 ":%" PRIu32 ") contains "
+ "a filesystem in use.", name, info->major, info->minor);
+ return 0;
+ }
+
+ return 1;
+}
+
+/* Check if all parent nodes of given node have open_count == 0 */
+static int _node_has_closed_parents(struct dm_tree_node *node,
+ const char *uuid_prefix,
+ size_t uuid_prefix_len)
+{
+ struct dm_tree_link *dlink;
+ const struct dm_info *dinfo;
+ struct dm_info info;
+ const char *uuid;
+
+ /* Iterate through parents of this node */
+ dm_list_iterate_items(dlink, &node->used_by) {
+ if (!(uuid = dm_tree_node_get_uuid(dlink->node))) {
stack;
- node = NULL;
+ continue;
+ }
+
+ /* Ignore if it doesn't belong to this VG */
+ if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len))
+ continue;
+
+ if (!(dinfo = dm_tree_node_get_info(dlink->node))) {
+ stack; /* FIXME Is this normal? */
+ return 0;
+ }
+
+ /* Refresh open_count */
+ if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info, NULL, NULL, NULL) ||
+ !info.exists)
+ continue;
+
+ if (info.open_count) {
+ log_debug("Node %s %d:%d has open_count %d", uuid_prefix,
+ dinfo->major, dinfo->minor, info.open_count);
+ return 0;
}
+ }
+
+ return 1;
+}
+
+static int _deactivate_node(const char *name, uint32_t major, uint32_t minor,
+ uint32_t *cookie, uint16_t udev_flags, int retry)
+{
+ struct dm_task *dmt;
+ int r = 0;
+
+ log_verbose("Removing %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor);
+
+ if (!(dmt = dm_task_create(DM_DEVICE_REMOVE))) {
+ log_error("Deactivation dm_task creation failed for %s", name);
+ return 0;
+ }
+
+ if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) {
+ log_error("Failed to set device number for %s deactivation", name);
goto out;
}
- /* Add dependencies to tree */
- for (i = 0; i < deps->count; i++)
- if (!_add_dev(dtree, node, MAJOR(deps->device[i]),
- MINOR(deps->device[i]), udev_flags)) {
- node = NULL;
- goto_out;
- }
+ if (!dm_task_no_open_count(dmt))
+ log_error("Failed to disable open_count");
+
+ if (cookie)
+ if (!dm_task_set_cookie(dmt, cookie, udev_flags))
+ goto out;
+
+ if (retry)
+ dm_task_retry_remove(dmt);
+
+ r = dm_task_run(dmt);
+
+ /* FIXME Until kernel returns actual name so dm-iface.c can handle it */
+ rm_dev_node(name, dmt->cookie_set && !(udev_flags & DM_UDEV_DISABLE_DM_RULES_FLAG),
+ dmt->cookie_set && (udev_flags & DM_UDEV_DISABLE_LIBRARY_FALLBACK));
+
+ /* FIXME Remove node from tree or mark invalid? */
out:
- if (dmt)
- dm_task_destroy(dmt);
+ dm_task_destroy(dmt);
- return node;
+ return r;
}
-static int _node_clear_table(struct dm_tree_node *dnode)
+static int _node_clear_table(struct dm_tree_node *dnode, uint16_t udev_flags)
{
- struct dm_task *dmt;
- struct dm_info *info;
- const char *name;
- int r;
+ struct dm_task *dmt = NULL, *deps_dmt = NULL;
+ struct dm_info *info, deps_info;
+ struct dm_deps *deps = NULL;
+ const char *name, *uuid;
+ const char *default_uuid_prefix;
+ size_t default_uuid_prefix_len;
+ uint32_t i;
+ int r = 0;
if (!(info = &dnode->info)) {
log_error("_node_clear_table failed: missing info");
if (!info->exists || !info->inactive_table)
return 1;
+ /* Get devices used by inactive table that's about to be deleted. */
+ if (!_deps(&deps_dmt, dnode->dtree->mem, info->major, info->minor, NULL, NULL, 1, info, &deps)) {
+ log_error("Failed to obtain dependencies for %s before clearing table.", name);
+ return 0;
+ }
+
log_verbose("Clearing inactive table %s (%" PRIu32 ":%" PRIu32 ")",
name, info->major, info->minor);
if (!(dmt = dm_task_create(DM_DEVICE_CLEAR))) {
- dm_task_destroy(dmt);
log_error("Table clear dm_task creation failed for %s", name);
- return 0;
+ goto_out;
}
if (!dm_task_set_major(dmt, info->major) ||
!dm_task_set_minor(dmt, info->minor)) {
log_error("Failed to set device number for %s table clear", name);
- dm_task_destroy(dmt);
- return 0;
+ goto_out;
}
r = dm_task_run(dmt);
r = 0;
}
- dm_task_destroy(dmt);
+ if (!r || !deps)
+ goto_out;
+
+ /*
+ * Remove (incomplete) devices that the inactive table referred to but
+ * which are not in the tree, no longer referenced and don't have a live
+ * table.
+ */
+ default_uuid_prefix = dm_uuid_prefix();
+ default_uuid_prefix_len = strlen(default_uuid_prefix);
+
+ for (i = 0; i < deps->count; i++) {
+ /* If already in tree, assume it's under control */
+ if (_find_dm_tree_node(dnode->dtree, MAJOR(deps->device[i]), MINOR(deps->device[i])))
+ continue;
+
+ if (!_info_by_dev(MAJOR(deps->device[i]), MINOR(deps->device[i]), 1,
+ &deps_info, dnode->dtree->mem, &name, &uuid))
+ continue;
+
+ /* Proceed if device is an 'orphan' - unreferenced and without a live table. */
+ if (!deps_info.exists || deps_info.live_table || deps_info.open_count)
+ continue;
+
+ if (strncmp(uuid, default_uuid_prefix, default_uuid_prefix_len))
+ continue;
+
+ /* Remove device. */
+ if (!_deactivate_node(name, deps_info.major, deps_info.minor, &dnode->dtree->cookie, udev_flags, 0)) {
+ log_error("Failed to deactivate no-longer-used device %s (%"
+ PRIu32 ":%" PRIu32 ")", name, deps_info.major, deps_info.minor);
+ } else if (deps_info.suspended)
+ dec_suspended();
+ }
+
+out:
+ if (dmt)
+ dm_task_destroy(dmt);
+
+ if (deps_dmt)
+ dm_task_destroy(deps_dmt);
return r;
}
-struct dm_tree_node *dm_tree_add_new_dev(struct dm_tree *dtree,
- const char *name,
- const char *uuid,
- uint32_t major, uint32_t minor,
- int read_only,
- int clear_inactive,
- void *context)
+struct dm_tree_node *dm_tree_add_new_dev_with_udev_flags(struct dm_tree *dtree,
+ const char *name,
+ const char *uuid,
+ uint32_t major,
+ uint32_t minor,
+ int read_only,
+ int clear_inactive,
+ void *context,
+ uint16_t udev_flags)
{
struct dm_tree_node *dnode;
struct dm_info info;
const char *name2;
const char *uuid2;
+ if (!name || !uuid) {
+ log_error("Cannot add device without name and uuid.");
+ return NULL;
+ }
+
/* Do we need to add node to tree? */
if (!(dnode = dm_tree_find_node_by_uuid(dtree, uuid))) {
if (!(name2 = dm_pool_strdup(dtree->mem, name))) {
return NULL;
}
- info.major = 0;
- info.minor = 0;
- info.exists = 0;
- info.live_table = 0;
- info.inactive_table = 0;
- info.read_only = 0;
+ memset(&info, 0, sizeof(info));
if (!(dnode = _create_dm_tree_node(dtree, name2, uuid2, &info,
context, 0)))
/* Do we need to rename node? */
if (!(dnode->props.new_name = dm_pool_strdup(dtree->mem, name))) {
log_error("name pool_strdup failed");
- return 0;
+ return NULL;
}
}
dnode->props.read_ahead = DM_READ_AHEAD_AUTO;
dnode->props.read_ahead_flags = 0;
- if (clear_inactive && !_node_clear_table(dnode))
+ if (clear_inactive && !_node_clear_table(dnode, udev_flags))
return_NULL;
dnode->context = context;
- dnode->udev_flags = 0;
+ dnode->udev_flags = udev_flags;
return dnode;
}
-struct dm_tree_node *dm_tree_add_new_dev_with_udev_flags(struct dm_tree *dtree,
- const char *name,
- const char *uuid,
- uint32_t major,
- uint32_t minor,
- int read_only,
- int clear_inactive,
- void *context,
- uint16_t udev_flags)
-{
- struct dm_tree_node *node;
-
- if ((node = dm_tree_add_new_dev(dtree, name, uuid, major, minor, read_only,
- clear_inactive, context)))
- node->udev_flags = udev_flags;
-
- return node;
-}
-
-
-void dm_tree_node_set_read_ahead(struct dm_tree_node *dnode,
- uint32_t read_ahead,
- uint32_t read_ahead_flags)
-{
- dnode->props.read_ahead = read_ahead;
- dnode->props.read_ahead_flags = read_ahead_flags;
-}
-
-int dm_tree_add_dev(struct dm_tree *dtree, uint32_t major, uint32_t minor)
+struct dm_tree_node *dm_tree_add_new_dev(struct dm_tree *dtree, const char *name,
+ const char *uuid, uint32_t major, uint32_t minor,
+ int read_only, int clear_inactive, void *context)
{
- return _add_dev(dtree, &dtree->root, major, minor, 0) ? 1 : 0;
-}
-
-int dm_tree_add_dev_with_udev_flags(struct dm_tree *dtree, uint32_t major,
- uint32_t minor, uint16_t udev_flags)
-{
- return _add_dev(dtree, &dtree->root, major, minor, udev_flags) ? 1 : 0;
-}
-
-const char *dm_tree_node_get_name(const struct dm_tree_node *node)
-{
- return node->info.exists ? node->name : "";
+ return dm_tree_add_new_dev_with_udev_flags(dtree, name, uuid, major, minor,
+ read_only, clear_inactive, context, 0);
}
-const char *dm_tree_node_get_uuid(const struct dm_tree_node *node)
-{
- return node->info.exists ? node->uuid : "";
-}
-
-const struct dm_info *dm_tree_node_get_info(const struct dm_tree_node *node)
-{
- return &node->info;
-}
-
-void *dm_tree_node_get_context(const struct dm_tree_node *node)
-{
- return node->context;
-}
-
-int dm_tree_node_size_changed(const struct dm_tree_node *dnode)
-{
- return dnode->props.size_changed;
-}
-
-int dm_tree_node_num_children(const struct dm_tree_node *node, uint32_t inverted)
-{
- if (inverted) {
- if (_nodes_are_linked(&node->dtree->root, node))
- return 0;
- return dm_list_size(&node->used_by);
- }
-
- if (_nodes_are_linked(node, &node->dtree->root))
- return 0;
-
- return dm_list_size(&node->uses);
-}
-
-/*
- * Returns 1 if no prefix supplied
- */
-static int _uuid_prefix_matches(const char *uuid, const char *uuid_prefix, size_t uuid_prefix_len)
-{
- if (!uuid_prefix)
- return 1;
-
- if (!strncmp(uuid, uuid_prefix, uuid_prefix_len))
- return 1;
-
- /* Handle transition: active device uuids might be missing the prefix */
- if (uuid_prefix_len <= 4)
- return 0;
-
- if (!strncmp(uuid, UUID_PREFIX, sizeof(UUID_PREFIX) - 1))
- return 0;
-
- if (strncmp(uuid_prefix, UUID_PREFIX, sizeof(UUID_PREFIX) - 1))
- return 0;
-
- if (!strncmp(uuid, uuid_prefix + sizeof(UUID_PREFIX) - 1, uuid_prefix_len - (sizeof(UUID_PREFIX) - 1)))
- return 1;
-
- return 0;
-}
-
-/*
- * Returns 1 if no children.
- */
-static int _children_suspended(struct dm_tree_node *node,
- uint32_t inverted,
- const char *uuid_prefix,
- size_t uuid_prefix_len)
-{
- struct dm_list *list;
- struct dm_tree_link *dlink;
- const struct dm_info *dinfo;
- const char *uuid;
-
- if (inverted) {
- if (_nodes_are_linked(&node->dtree->root, node))
- return 1;
- list = &node->used_by;
- } else {
- if (_nodes_are_linked(node, &node->dtree->root))
- return 1;
- list = &node->uses;
- }
-
- dm_list_iterate_items(dlink, list) {
- if (!(uuid = dm_tree_node_get_uuid(dlink->node))) {
- stack;
- continue;
- }
-
- /* Ignore if it doesn't belong to this VG */
- if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len))
- continue;
-
- if (!(dinfo = dm_tree_node_get_info(dlink->node))) {
- stack; /* FIXME Is this normal? */
- return 0;
- }
-
- if (!dinfo->suspended)
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Set major and minor to zero for root of tree.
- */
-struct dm_tree_node *dm_tree_find_node(struct dm_tree *dtree,
- uint32_t major,
- uint32_t minor)
-{
- if (!major && !minor)
- return &dtree->root;
-
- return _find_dm_tree_node(dtree, major, minor);
-}
-
-/*
- * Set uuid to NULL for root of tree.
- */
-struct dm_tree_node *dm_tree_find_node_by_uuid(struct dm_tree *dtree,
- const char *uuid)
-{
- if (!uuid || !*uuid)
- return &dtree->root;
-
- return _find_dm_tree_node_by_uuid(dtree, uuid);
-}
-
-/*
- * First time set *handle to NULL.
- * Set inverted to invert the tree.
- */
-struct dm_tree_node *dm_tree_next_child(void **handle,
- const struct dm_tree_node *parent,
- uint32_t inverted)
-{
- struct dm_list **dlink = (struct dm_list **) handle;
- const struct dm_list *use_list;
-
- if (inverted)
- use_list = &parent->used_by;
- else
- use_list = &parent->uses;
-
- if (!*dlink)
- *dlink = dm_list_first(use_list);
- else
- *dlink = dm_list_next(use_list, *dlink);
-
- return (*dlink) ? dm_list_item(*dlink, struct dm_tree_link)->node : NULL;
-}
-
-/*
- * Deactivate a device with its dependencies if the uuid prefix matches.
- */
-static int _info_by_dev(uint32_t major, uint32_t minor, int with_open_count,
- struct dm_info *info)
-{
- struct dm_task *dmt;
- int r;
-
- if (!(dmt = dm_task_create(DM_DEVICE_INFO))) {
- log_error("_info_by_dev: dm_task creation failed");
- return 0;
- }
-
- if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) {
- log_error("_info_by_dev: Failed to set device number");
- dm_task_destroy(dmt);
- return 0;
- }
-
- if (!with_open_count && !dm_task_no_open_count(dmt))
- log_error("Failed to disable open_count");
-
- if ((r = dm_task_run(dmt)))
- r = dm_task_get_info(dmt, info);
-
- dm_task_destroy(dmt);
-
- return r;
-}
-
-static int _deactivate_node(const char *name, uint32_t major, uint32_t minor,
- uint32_t *cookie, uint16_t udev_flags)
+static struct dm_tree_node *_add_dev(struct dm_tree *dtree,
+ struct dm_tree_node *parent,
+ uint32_t major, uint32_t minor,
+ uint16_t udev_flags)
{
- struct dm_task *dmt;
- int r = 0;
+ struct dm_task *dmt = NULL;
+ struct dm_info info;
+ struct dm_deps *deps = NULL;
+ const char *name = NULL;
+ const char *uuid = NULL;
+ struct dm_tree_node *node = NULL;
+ uint32_t i;
+ int new = 0;
- log_verbose("Removing %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor);
+ /* Already in tree? */
+ if (!(node = _find_dm_tree_node(dtree, major, minor))) {
+ if (!_deps(&dmt, dtree->mem, major, minor, &name, &uuid, 0, &info, &deps))
+ return_NULL;
- if (!(dmt = dm_task_create(DM_DEVICE_REMOVE))) {
- log_error("Deactivation dm_task creation failed for %s", name);
- return 0;
+ if (!(node = _create_dm_tree_node(dtree, name, uuid, &info,
+ NULL, udev_flags)))
+ goto_out;
+ new = 1;
}
- if (!dm_task_set_major(dmt, major) || !dm_task_set_minor(dmt, minor)) {
- log_error("Failed to set device number for %s deactivation", name);
- goto out;
+ if (!_link_tree_nodes(parent, node)) {
+ node = NULL;
+ goto_out;
}
- if (!dm_task_no_open_count(dmt))
- log_error("Failed to disable open_count");
+ /* If node was already in tree, no need to recurse. */
+ if (!new)
+ goto out;
- if (!dm_task_set_cookie(dmt, cookie, udev_flags))
+ /* Can't recurse if not a mapped device or there are no dependencies */
+ if (!node->info.exists || !deps || !deps->count) {
+ if (!_add_to_bottomlevel(node)) {
+ stack;
+ node = NULL;
+ }
goto out;
+ }
- r = dm_task_run(dmt);
+ /* Add dependencies to tree */
+ for (i = 0; i < deps->count; i++)
+ if (!_add_dev(dtree, node, MAJOR(deps->device[i]),
+ MINOR(deps->device[i]), udev_flags)) {
+ node = NULL;
+ goto_out;
+ }
- /* FIXME Until kernel returns actual name so dm-ioctl.c can handle it */
- rm_dev_node(name, dmt->cookie_set &&
- !(udev_flags & DM_UDEV_DISABLE_DM_RULES_FLAG));
+out:
+ if (dmt)
+ dm_task_destroy(dmt);
- /* FIXME Remove node from tree or mark invalid? */
+ return node;
+}
-out:
- dm_task_destroy(dmt);
+int dm_tree_add_dev(struct dm_tree *dtree, uint32_t major, uint32_t minor)
+{
+ return _add_dev(dtree, &dtree->root, major, minor, 0) ? 1 : 0;
+}
- return r;
+int dm_tree_add_dev_with_udev_flags(struct dm_tree *dtree, uint32_t major,
+ uint32_t minor, uint16_t udev_flags)
+{
+ return _add_dev(dtree, &dtree->root, major, minor, udev_flags) ? 1 : 0;
}
static int _rename_node(const char *old_name, const char *new_name, uint32_t major,
}
if (!dm_task_set_newname(dmt, new_name))
- goto_out;
+ goto_out;
if (!dm_task_no_open_count(dmt))
log_error("Failed to disable open_count");
static int _resume_node(const char *name, uint32_t major, uint32_t minor,
uint32_t read_ahead, uint32_t read_ahead_flags,
struct dm_info *newinfo, uint32_t *cookie,
- uint16_t udev_flags)
+ uint16_t udev_flags, int already_suspended)
{
struct dm_task *dmt;
int r = 0;
log_verbose("Resuming %s (%" PRIu32 ":%" PRIu32 ")", name, major, minor);
if (!(dmt = dm_task_create(DM_DEVICE_RESUME))) {
- log_error("Suspend dm_task creation failed for %s", name);
+ log_debug("Suspend dm_task creation failed for %s.", name);
return 0;
}
/* FIXME Kernel should fill in name on return instead */
if (!dm_task_set_name(dmt, name)) {
- log_error("Failed to set readahead device name for %s", name);
+ log_debug("Failed to set device name for %s resumption.", name);
goto out;
}
log_error("Failed to set read ahead");
if (!dm_task_set_cookie(dmt, cookie, udev_flags))
- goto out;
+ goto_out;
- if ((r = dm_task_run(dmt)))
- r = dm_task_get_info(dmt, newinfo);
+ if (!(r = dm_task_run(dmt)))
+ goto_out;
+
+ if (already_suspended)
+ dec_suspended();
+
+ if (!(r = dm_task_get_info(dmt, newinfo)))
+ stack;
out:
dm_task_destroy(dmt);
if (no_flush && !dm_task_no_flush(dmt))
log_error("Failed to set no_flush flag.");
- if ((r = dm_task_run(dmt)))
+ if ((r = dm_task_run(dmt))) {
+ inc_suspended();
r = dm_task_get_info(dmt, newinfo);
+ }
dm_task_destroy(dmt);
return r;
}
-int dm_tree_deactivate_children(struct dm_tree_node *dnode,
- const char *uuid_prefix,
- size_t uuid_prefix_len)
+static int _thin_pool_status_transaction_id(struct dm_tree_node *dnode, uint64_t *transaction_id)
+{
+ struct dm_task *dmt;
+ int r = 0;
+ uint64_t start, length;
+ char *type = NULL;
+ char *params = NULL;
+
+ if (!(dmt = dm_task_create(DM_DEVICE_STATUS)))
+ return_0;
+
+ if (!dm_task_set_major(dmt, dnode->info.major) ||
+ !dm_task_set_minor(dmt, dnode->info.minor)) {
+ log_error("Failed to set major minor.");
+ goto out;
+ }
+
+ if (!dm_task_run(dmt))
+ goto_out;
+
+ dm_get_next_target(dmt, NULL, &start, &length, &type, ¶ms);
+
+ if (type && (strcmp(type, "thin-pool") != 0)) {
+ log_error("Expected thin-pool target for %d:%d and got %s.",
+ dnode->info.major, dnode->info.minor, type);
+ goto out;
+ }
+
+ if (!params || (sscanf(params, "%" PRIu64, transaction_id) != 1)) {
+ log_error("Failed to parse transaction_id from %s.", params);
+ goto out;
+ }
+
+ log_debug("Thin pool transaction id: %" PRIu64 " status: %s.", *transaction_id, params);
+
+ r = 1;
+out:
+ dm_task_destroy(dmt);
+
+ return r;
+}
+
+static int _thin_pool_node_message(struct dm_tree_node *dnode, struct thin_message *tm)
+{
+ struct dm_task *dmt;
+ struct dm_thin_message *m = &tm->message;
+ char buf[64];
+ int r;
+
+ switch (m->type) {
+ case DM_THIN_MESSAGE_CREATE_SNAP:
+ r = dm_snprintf(buf, sizeof(buf), "create_snap %u %u",
+ m->u.m_create_snap.device_id,
+ m->u.m_create_snap.origin_id);
+ break;
+ case DM_THIN_MESSAGE_CREATE_THIN:
+ r = dm_snprintf(buf, sizeof(buf), "create_thin %u",
+ m->u.m_create_thin.device_id);
+ break;
+ case DM_THIN_MESSAGE_DELETE:
+ r = dm_snprintf(buf, sizeof(buf), "delete %u",
+ m->u.m_delete.device_id);
+ break;
+ case DM_THIN_MESSAGE_SET_TRANSACTION_ID:
+ r = dm_snprintf(buf, sizeof(buf),
+ "set_transaction_id %" PRIu64 " %" PRIu64,
+ m->u.m_set_transaction_id.current_id,
+ m->u.m_set_transaction_id.new_id);
+ break;
+ default:
+ r = -1;
+ }
+
+ if (r < 0) {
+ log_error("Failed to prepare message.");
+ return 0;
+ }
+
+ r = 0;
+
+ if (!(dmt = dm_task_create(DM_DEVICE_TARGET_MSG)))
+ return_0;
+
+ if (!dm_task_set_major(dmt, dnode->info.major) ||
+ !dm_task_set_minor(dmt, dnode->info.minor)) {
+ log_error("Failed to set message major minor.");
+ goto out;
+ }
+
+ if (!dm_task_set_message(dmt, buf))
+ goto_out;
+
+ /* Internal functionality of dm_task */
+ dmt->expected_errno = tm->expected_errno;
+
+ if (!dm_task_run(dmt))
+ goto_out;
+
+ r = 1;
+out:
+ dm_task_destroy(dmt);
+
+ return r;
+}
+
+static int _node_send_messages(struct dm_tree_node *dnode,
+ const char *uuid_prefix,
+ size_t uuid_prefix_len)
+{
+ struct load_segment *seg;
+ struct thin_message *tmsg;
+ uint64_t trans_id;
+ const char *uuid;
+
+ if (!dnode->info.exists || (dm_list_size(&dnode->props.segs) != 1))
+ return 1;
+
+ seg = dm_list_item(dm_list_last(&dnode->props.segs), struct load_segment);
+ if (seg->type != SEG_THIN_POOL)
+ return 1;
+
+ if (!(uuid = dm_tree_node_get_uuid(dnode)))
+ return_0;
+
+ if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len)) {
+ log_debug("UUID \"%s\" does not match.", uuid);
+ return 1;
+ }
+
+ if (!_thin_pool_status_transaction_id(dnode, &trans_id))
+ goto_bad;
+
+ if (trans_id == seg->transaction_id)
+ return 1; /* In sync - skip messages */
+
+ if (trans_id != (seg->transaction_id - 1)) {
+ log_error("Thin pool transaction_id=%" PRIu64 ", while expected: %" PRIu64 ".",
+ trans_id, seg->transaction_id - 1);
+ goto bad; /* Nothing to send */
+ }
+
+ dm_list_iterate_items(tmsg, &seg->thin_messages)
+ if (!(_thin_pool_node_message(dnode, tmsg)))
+ goto_bad;
+
+ return 1;
+bad:
+ /* Try to deactivate */
+ if (!(dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len)))
+ log_error("Failed to deactivate %s", dnode->name);
+
+ return 0;
+}
+
+/*
+ * FIXME Don't attempt to deactivate known internal dependencies.
+ */
+static int _dm_tree_deactivate_children(struct dm_tree_node *dnode,
+ const char *uuid_prefix,
+ size_t uuid_prefix_len,
+ unsigned level)
{
int r = 1;
void *handle = NULL;
continue;
/* Refresh open_count */
- if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info) ||
+ if (!_info_by_dev(dinfo->major, dinfo->minor, 1, &info, NULL, NULL, NULL) ||
!info.exists)
continue;
if (info.open_count) {
- r = 0;
+ /* Skip internal non-toplevel opened nodes */
+ if (level)
+ continue;
+
+ /* When retry is not allowed, error */
+ if (!child->dtree->retry_remove) {
+ log_error("Unable to deactivate open %s (%" PRIu32
+ ":%" PRIu32 ")", name, info.major, info.minor);
+ r = 0;
+ continue;
+ }
+
+ /* Check toplevel node for holders/mounted fs */
+ if (!_check_device_not_in_use(name, &info)) {
+ stack;
+ r = 0;
+ continue;
+ }
+ /* Go on with retry */
+ }
+
+ /* Also checking open_count in parent nodes of presuspend_node */
+ if ((child->presuspend_node &&
+ !_node_has_closed_parents(child->presuspend_node,
+ uuid_prefix, uuid_prefix_len))) {
+ /* Only report error from (likely non-internal) dependency at top level */
+ if (!level) {
+ log_error("Unable to deactivate open %s (%" PRIu32
+ ":%" PRIu32 ")", name, info.major,
+ info.minor);
+ r = 0;
+ }
continue;
}
+ /* Suspend child node first if requested */
+ if (child->presuspend_node &&
+ !dm_tree_suspend_children(child, uuid_prefix, uuid_prefix_len))
+ continue;
+
if (!_deactivate_node(name, info.major, info.minor,
- &child->dtree->cookie, child->udev_flags)) {
+ &child->dtree->cookie, child->udev_flags,
+ (level == 0) ? child->dtree->retry_remove : 0)) {
log_error("Unable to deactivate %s (%" PRIu32
":%" PRIu32 ")", name, info.major,
info.minor);
r = 0;
continue;
- }
+ } else if (info.suspended)
+ dec_suspended();
- if (dm_tree_node_num_children(child, 0))
- if (!dm_tree_deactivate_children(child, uuid_prefix, uuid_prefix_len))
- return_0;
+ if (child->callback &&
+ !child->callback(child, DM_NODE_CALLBACK_DEACTIVATED,
+ child->callback_data))
+ stack;
+ // FIXME: We need to let lvremove pass,
+ // so for now deactivation ignores check result
+ //r = 0; // FIXME: _node_clear_table() without callback ?
+
+ if (dm_tree_node_num_children(child, 0) &&
+ !_dm_tree_deactivate_children(child, uuid_prefix, uuid_prefix_len, level + 1))
+ return_0;
}
return r;
}
-void dm_tree_skip_lockfs(struct dm_tree_node *dnode)
-{
- dnode->dtree->skip_lockfs = 1;
-}
-
-void dm_tree_use_no_flush_suspend(struct dm_tree_node *dnode)
+int dm_tree_deactivate_children(struct dm_tree_node *dnode,
+ const char *uuid_prefix,
+ size_t uuid_prefix_len)
{
- dnode->dtree->no_flush = 1;
+ return _dm_tree_deactivate_children(dnode, uuid_prefix, uuid_prefix_len, 0);
}
int dm_tree_suspend_children(struct dm_tree_node *dnode,
if (!_children_suspended(child, 1, uuid_prefix, uuid_prefix_len))
continue;
- if (!_info_by_dev(dinfo->major, dinfo->minor, 0, &info) ||
+ if (!_info_by_dev(dinfo->major, dinfo->minor, 0, &info, NULL, NULL, NULL) ||
!info.exists || info.suspended)
continue;
for (priority = 0; priority < 3; priority++) {
while ((child = dm_tree_next_child(&handle, dnode, 0))) {
+ if (priority != child->activation_priority)
+ continue;
+
if (!(uuid = dm_tree_node_get_uuid(child))) {
stack;
continue;
if (!_uuid_prefix_matches(uuid, uuid_prefix, uuid_prefix_len))
continue;
- if (priority != child->activation_priority)
- continue;
-
if (!(name = dm_tree_node_get_name(child))) {
stack;
continue;
if (!_resume_node(child->name, child->info.major, child->info.minor,
child->props.read_ahead, child->props.read_ahead_flags,
- &newinfo, &child->dtree->cookie, child->udev_flags)) {
+ &newinfo, &child->dtree->cookie, child->udev_flags, child->info.suspended)) {
log_error("Unable to resume %s (%" PRIu32
":%" PRIu32 ")", child->name, child->info.major,
child->info.minor);
}
}
+ /*
+ * FIXME: Implement delayed error reporting
+ * activation should be stopped only in the case,
+ * the submission of transation_id message fails,
+ * resume should continue further, just whole command
+ * has to report failure.
+ */
+ if (r && dnode->props.send_messages &&
+ !(r = _node_send_messages(dnode, uuid_prefix, uuid_prefix_len)))
+ stack;
+
handle = NULL;
return r;
static int _build_dev_string(char *devbuf, size_t bufsize, struct dm_tree_node *node)
{
if (!dm_format_dev(devbuf, bufsize, node->info.major, node->info.minor)) {
- log_error("Failed to format %s device number for %s as dm "
- "target (%u,%u)",
- node->name, node->uuid, node->info.major, node->info.minor);
- return 0;
+ log_error("Failed to format %s device number for %s as dm "
+ "target (%u,%u)",
+ node->name, node->uuid, node->info.major, node->info.minor);
+ return 0;
}
return 1;
*
* Returns: 1 on success, 0 on failure
*/
-static int _emit_areas_line(struct dm_task *dmt __attribute((unused)),
+static int _emit_areas_line(struct dm_task *dmt __attribute__((unused)),
struct load_segment *seg, char *params,
size_t paramsize, int *pos)
{
struct seg_area *area;
char devbuf[DM_FORMAT_DEV_BUFSIZE];
unsigned first_time = 1;
+ const char *logtype, *synctype;
+ unsigned log_parm_count;
dm_list_iterate_items(area, &seg->areas) {
- if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node))
- return_0;
+ switch (seg->type) {
+ case SEG_REPLICATOR_DEV:
+ if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node))
+ return_0;
+
+ EMIT_PARAMS(*pos, " %d 1 %s", area->rsite_index, devbuf);
+ if (first_time)
+ EMIT_PARAMS(*pos, " nolog 0");
+ else {
+ /* Remote devices */
+ log_parm_count = (area->flags &
+ (DM_NOSYNC | DM_FORCESYNC)) ? 2 : 1;
+
+ if (!area->slog) {
+ devbuf[0] = 0; /* Only core log parameters */
+ logtype = "core";
+ } else {
+ devbuf[0] = ' '; /* Extra space before device name */
+ if (!_build_dev_string(devbuf + 1,
+ sizeof(devbuf) - 1,
+ area->slog))
+ return_0;
+ logtype = "disk";
+ log_parm_count++; /* Extra sync log device name parameter */
+ }
+
+ EMIT_PARAMS(*pos, " %s %u%s %" PRIu64, logtype,
+ log_parm_count, devbuf, area->region_size);
+
+ synctype = (area->flags & DM_NOSYNC) ?
+ " nosync" : (area->flags & DM_FORCESYNC) ?
+ " sync" : NULL;
+
+ if (synctype)
+ EMIT_PARAMS(*pos, "%s", synctype);
+ }
+ break;
+ case SEG_RAID1:
+ case SEG_RAID4:
+ case SEG_RAID5_LA:
+ case SEG_RAID5_RA:
+ case SEG_RAID5_LS:
+ case SEG_RAID5_RS:
+ case SEG_RAID6_ZR:
+ case SEG_RAID6_NR:
+ case SEG_RAID6_NC:
+ if (!area->dev_node) {
+ EMIT_PARAMS(*pos, " -");
+ break;
+ }
+ if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node))
+ return_0;
+
+ EMIT_PARAMS(*pos, " %s", devbuf);
+ break;
+ default:
+ if (!_build_dev_string(devbuf, sizeof(devbuf), area->dev_node))
+ return_0;
- EMIT_PARAMS(*pos, "%s%s %" PRIu64, first_time ? "" : " ",
- devbuf, area->offset);
+ EMIT_PARAMS(*pos, "%s%s %" PRIu64, first_time ? "" : " ",
+ devbuf, area->offset);
+ }
first_time = 0;
}
return 1;
}
+static int _replicator_emit_segment_line(const struct load_segment *seg, char *params,
+ size_t paramsize, int *pos)
+{
+ const struct load_segment *rlog_seg;
+ struct replicator_site *rsite;
+ char rlogbuf[DM_FORMAT_DEV_BUFSIZE];
+ unsigned parm_count;
+
+ if (!seg->log || !_build_dev_string(rlogbuf, sizeof(rlogbuf), seg->log))
+ return_0;
+
+ rlog_seg = dm_list_item(dm_list_last(&seg->log->props.segs),
+ struct load_segment);
+
+ EMIT_PARAMS(*pos, "%s 4 %s 0 auto %" PRIu64,
+ seg->rlog_type, rlogbuf, rlog_seg->size);
+
+ dm_list_iterate_items(rsite, &seg->rsites) {
+ parm_count = (rsite->fall_behind_data
+ || rsite->fall_behind_ios
+ || rsite->async_timeout) ? 4 : 2;
+
+ EMIT_PARAMS(*pos, " blockdev %u %u %s", parm_count, rsite->rsite_index,
+ (rsite->mode == DM_REPLICATOR_SYNC) ? "synchronous" : "asynchronous");
+
+ if (rsite->fall_behind_data)
+ EMIT_PARAMS(*pos, " data %" PRIu64, rsite->fall_behind_data);
+ else if (rsite->fall_behind_ios)
+ EMIT_PARAMS(*pos, " ios %" PRIu32, rsite->fall_behind_ios);
+ else if (rsite->async_timeout)
+ EMIT_PARAMS(*pos, " timeout %" PRIu32, rsite->async_timeout);
+ }
+
+ return 1;
+}
+
/*
* Returns: 1 on success, 0 on failure
*/
-static int _mirror_emit_segment_line(struct dm_task *dmt, uint32_t major,
- uint32_t minor, struct load_segment *seg,
- uint64_t *seg_start, char *params,
- size_t paramsize)
+static int _mirror_emit_segment_line(struct dm_task *dmt, struct load_segment *seg,
+ char *params, size_t paramsize)
{
- int r;
int block_on_error = 0;
int handle_errors = 0;
int dm_log_userspace = 0;
struct utsname uts;
unsigned log_parm_count;
- int pos = 0;
+ int pos = 0, parts;
char logbuf[DM_FORMAT_DEV_BUFSIZE];
const char *logtype;
+ unsigned kmaj = 0, kmin = 0, krel = 0;
- r = uname(&uts);
- if (r)
- return_0;
+ if (uname(&uts) == -1) {
+ log_error("Cannot read kernel release version.");
+ return 0;
+ }
+
+ /* Kernels with a major number of 2 always had 3 parts. */
+ parts = sscanf(uts.release, "%u.%u.%u", &kmaj, &kmin, &krel);
+ if (parts < 1 || (kmaj < 3 && parts < 3)) {
+ log_error("Wrong kernel release version %s.", uts.release);
+ return 0;
+ }
if ((seg->flags & DM_BLOCK_ON_ERROR)) {
/*
* "handle_errors" by the dm-mirror module's version
* number (>= 1.12) or by the kernel version (>= 2.6.22).
*/
- if (strncmp(uts.release, "2.6.22", 6) >= 0)
+ if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 22))
handle_errors = 1;
else
block_on_error = 1;
* The dm-log-userspace module was added to the
* 2.6.31 kernel.
*/
- if (strncmp(uts.release, "2.6.31", 6) >= 0)
+ if (KERNEL_VERSION(kmaj, kmin, krel) >= KERNEL_VERSION(2, 6, 31))
dm_log_userspace = 1;
}
if ((seg->flags & DM_NOSYNC))
EMIT_PARAMS(pos, " nosync");
- else if ((seg->flags & DM_FORCESYNC))
+ else if ((seg->flags & DM_FORCESYNC))
+ EMIT_PARAMS(pos, " sync");
+
+ if (block_on_error)
+ EMIT_PARAMS(pos, " block_on_error");
+
+ EMIT_PARAMS(pos, " %u ", seg->mirror_area_count);
+
+ if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0)
+ return_0;
+
+ if (handle_errors)
+ EMIT_PARAMS(pos, " 1 handle_errors");
+
+ return 1;
+}
+
+static int _raid_emit_segment_line(struct dm_task *dmt, uint32_t major,
+ uint32_t minor, struct load_segment *seg,
+ uint64_t *seg_start, char *params,
+ size_t paramsize)
+{
+ uint32_t i;
+ int param_count = 1; /* mandatory 'chunk size'/'stripe size' arg */
+ int pos = 0;
+
+ if ((seg->flags & DM_NOSYNC) || (seg->flags & DM_FORCESYNC))
+ param_count++;
+
+ if (seg->region_size)
+ param_count += 2;
+
+ /* rebuilds is 64-bit */
+ param_count += 2 * hweight32(seg->rebuilds & 0xFFFFFFFF);
+ param_count += 2 * hweight32(seg->rebuilds >> 32);
+
+ if ((seg->type == SEG_RAID1) && seg->stripe_size)
+ log_error("WARNING: Ignoring RAID1 stripe size");
+
+ EMIT_PARAMS(pos, "%s %d %u", dm_segtypes[seg->type].target,
+ param_count, seg->stripe_size);
+
+ if (seg->flags & DM_NOSYNC)
+ EMIT_PARAMS(pos, " nosync");
+ else if (seg->flags & DM_FORCESYNC)
EMIT_PARAMS(pos, " sync");
- if (block_on_error)
- EMIT_PARAMS(pos, " block_on_error");
+ if (seg->region_size)
+ EMIT_PARAMS(pos, " region_size %u", seg->region_size);
- EMIT_PARAMS(pos, " %u ", seg->mirror_area_count);
+ for (i = 0; i < (seg->area_count / 2); i++)
+ if (seg->rebuilds & (1 << i))
+ EMIT_PARAMS(pos, " rebuild %u", i);
- if ((r = _emit_areas_line(dmt, seg, params, paramsize, &pos)) <= 0)
- return_0;
+ /* Print number of metadata/data device pairs */
+ EMIT_PARAMS(pos, " %u", seg->area_count/2);
- if (handle_errors)
- EMIT_PARAMS(pos, " 1 handle_errors");
+ if (_emit_areas_line(dmt, seg, params, paramsize, &pos) <= 0)
+ return_0;
return 1;
}
{
int pos = 0;
int r;
+ int target_type_is_raid = 0;
char originbuf[DM_FORMAT_DEV_BUFSIZE], cowbuf[DM_FORMAT_DEV_BUFSIZE];
+ char pool[DM_FORMAT_DEV_BUFSIZE], metadata[DM_FORMAT_DEV_BUFSIZE];
switch(seg->type) {
case SEG_ERROR:
break;
case SEG_MIRRORED:
/* Mirrors are pretty complicated - now in separate function */
- r = _mirror_emit_segment_line(dmt, major, minor, seg, seg_start,
- params, paramsize);
+ r = _mirror_emit_segment_line(dmt, seg, params, paramsize);
if (!r)
return_0;
break;
+ case SEG_REPLICATOR:
+ if ((r = _replicator_emit_segment_line(seg, params, paramsize,
+ &pos)) <= 0) {
+ stack;
+ return r;
+ }
+ break;
+ case SEG_REPLICATOR_DEV:
+ if (!seg->replicator || !_build_dev_string(originbuf,
+ sizeof(originbuf),
+ seg->replicator))
+ return_0;
+
+ EMIT_PARAMS(pos, "%s %" PRIu64, originbuf, seg->rdevice_index);
+ break;
case SEG_SNAPSHOT:
case SEG_SNAPSHOT_MERGE:
if (!_build_dev_string(originbuf, sizeof(originbuf), seg->origin))
seg->iv_offset != DM_CRYPT_IV_DEFAULT ?
seg->iv_offset : *seg_start);
break;
+ case SEG_RAID1:
+ case SEG_RAID4:
+ case SEG_RAID5_LA:
+ case SEG_RAID5_RA:
+ case SEG_RAID5_LS:
+ case SEG_RAID5_RS:
+ case SEG_RAID6_ZR:
+ case SEG_RAID6_NR:
+ case SEG_RAID6_NC:
+ target_type_is_raid = 1;
+ r = _raid_emit_segment_line(dmt, major, minor, seg, seg_start,
+ params, paramsize);
+ if (!r)
+ return_0;
+
+ break;
+ case SEG_THIN_POOL:
+ if (!_build_dev_string(metadata, sizeof(metadata), seg->metadata))
+ return_0;
+ if (!_build_dev_string(pool, sizeof(pool), seg->pool))
+ return_0;
+ EMIT_PARAMS(pos, "%s %s %d %" PRIu64 " %s", metadata, pool,
+ seg->data_block_size, seg->low_water_mark,
+ seg->skip_block_zeroing ? "1 skip_block_zeroing" : "0");
+ break;
+ case SEG_THIN:
+ if (!_build_dev_string(pool, sizeof(pool), seg->pool))
+ return_0;
+ EMIT_PARAMS(pos, "%s %d", pool, seg->device_id);
+ break;
}
switch(seg->type) {
case SEG_ERROR:
+ case SEG_REPLICATOR:
case SEG_SNAPSHOT:
case SEG_SNAPSHOT_ORIGIN:
case SEG_SNAPSHOT_MERGE:
case SEG_ZERO:
+ case SEG_THIN_POOL:
+ case SEG_THIN:
break;
case SEG_CRYPT:
case SEG_LINEAR:
+ case SEG_REPLICATOR_DEV:
case SEG_STRIPED:
if ((r = _emit_areas_line(dmt, seg, params, paramsize, &pos)) <= 0) {
stack;
return r;
}
+ if (!params[0]) {
+ log_error("No parameters supplied for %s target "
+ "%u:%u.", dm_segtypes[seg->type].target,
+ major, minor);
+ return 0;
+ }
break;
}
log_debug("Adding target to (%" PRIu32 ":%" PRIu32 "): %" PRIu64
" %" PRIu64 " %s %s", major, minor,
- *seg_start, seg->size, dm_segtypes[seg->type].target, params);
+ *seg_start, seg->size, target_type_is_raid ? "raid" :
+ dm_segtypes[seg->type].target, params);
- if (!dm_task_add_target(dmt, *seg_start, seg->size, dm_segtypes[seg->type].target, params))
+ if (!dm_task_add_target(dmt, *seg_start, seg->size,
+ target_type_is_raid ? "raid" :
+ dm_segtypes[seg->type].target, params))
return_0;
*seg_start += seg->size;
int r = 0;
struct dm_task *dmt;
struct load_segment *seg;
- uint64_t seg_start = 0;
+ uint64_t seg_start = 0, existing_table_size;
log_verbose("Loading %s table (%" PRIu32 ":%" PRIu32 ")", dnode->name,
dnode->info.major, dnode->info.minor);
log_verbose("Suppressed %s identical table reload.",
dnode->name);
+ existing_table_size = dm_task_get_existing_table_size(dmt);
if ((dnode->props.size_changed =
- (dm_task_get_existing_table_size(dmt) == seg_start) ? 0 : 1))
+ (existing_table_size == seg_start) ? 0 : 1)) {
+ /*
+ * Kernel usually skips size validation on zero-length devices
+ * now so no need to preload them.
+ */
+ /* FIXME In which kernel version did this begin? */
+ if (!existing_table_size && dnode->props.delay_resume_if_new)
+ dnode->props.size_changed = 0;
+
log_debug("Table size changed from %" PRIu64 " to %"
- PRIu64 " for %s",
- dm_task_get_existing_table_size(dmt),
- seg_start, dnode->name);
+ PRIu64 " for %s.%s", existing_table_size,
+ seg_start, dnode->name,
+ dnode->props.size_changed ? "" : " (Ignoring.)");
+ }
}
dnode->props.segment_count = 0;
void *handle = NULL;
struct dm_tree_node *child;
struct dm_info newinfo;
+ int update_devs_flag = 0;
/* Preload children first */
while ((child = dm_tree_next_child(&handle, dnode, 0))) {
return_0;
/* FIXME Cope if name exists with no uuid? */
- if (!child->info.exists) {
- if (!_create_node(child)) {
- stack;
- return 0;
- }
- }
+ if (!child->info.exists && !_create_node(child))
+ return_0;
- if (!child->info.inactive_table && child->props.segment_count) {
- if (!_load_node(child)) {
- stack;
- return 0;
- }
- }
+ if (!child->info.inactive_table &&
+ child->props.segment_count &&
+ !_load_node(child))
+ return_0;
/* Propagate device size change change */
if (child->props.size_changed)
if (!_resume_node(child->name, child->info.major, child->info.minor,
child->props.read_ahead, child->props.read_ahead_flags,
- &newinfo, &child->dtree->cookie, child->udev_flags)) {
+ &newinfo, &child->dtree->cookie, child->udev_flags,
+ child->info.suspended)) {
log_error("Unable to resume %s (%" PRIu32
":%" PRIu32 ")", child->name, child->info.major,
child->info.minor);
/* Update cached info */
child->info = newinfo;
+ /*
+ * Prepare for immediate synchronization with udev and flush all stacked
+ * dev node operations if requested by immediate_dev_node property. But
+ * finish processing current level in the tree first.
+ */
+ if (child->props.immediate_dev_node)
+ update_devs_flag = 1;
}
- handle = NULL;
+ if (update_devs_flag ||
+ (!dnode->info.exists && dnode->callback)) {
+ if (!dm_udev_wait(dm_tree_get_cookie(dnode)))
+ stack;
+ dm_tree_set_cookie(dnode, 0);
+
+ if (!dnode->info.exists && dnode->callback &&
+ !dnode->callback(child, DM_NODE_CALLBACK_PRELOADED,
+ dnode->callback_data))
+ return_0;
+ }
return r;
}
}
int dm_tree_node_add_snapshot_origin_target(struct dm_tree_node *dnode,
- uint64_t size,
- const char *origin_uuid)
+ uint64_t size,
+ const char *origin_uuid)
{
struct load_segment *seg;
struct dm_tree_node *origin_node;
}
int dm_tree_node_add_error_target(struct dm_tree_node *node,
- uint64_t size)
+ uint64_t size)
{
if (!_add_segment(node, SEG_ERROR, size))
return_0;
}
int dm_tree_node_add_zero_target(struct dm_tree_node *node,
- uint64_t size)
+ uint64_t size)
{
if (!_add_segment(node, SEG_ZERO, size))
return_0;
}
int dm_tree_node_add_linear_target(struct dm_tree_node *node,
- uint64_t size)
+ uint64_t size)
{
if (!_add_segment(node, SEG_LINEAR, size))
return_0;
}
int dm_tree_node_add_striped_target(struct dm_tree_node *node,
- uint64_t size,
- uint32_t stripe_size)
+ uint64_t size,
+ uint32_t stripe_size)
{
struct load_segment *seg;
log_error("log uuid pool_strdup failed");
return 0;
}
- if (!(flags & DM_CORELOG)) {
+ if ((flags & DM_CORELOG))
+ /* For pvmove: immediate resume (for size validation) isn't needed. */
+ node->props.delay_resume_if_new = 1;
+ else {
if (!(log_node = dm_tree_find_node_by_uuid(node->dtree, log_uuid))) {
log_error("Couldn't find mirror log uuid %s.", log_uuid);
return 0;
}
+ if (clustered)
+ log_node->props.immediate_dev_node = 1;
+
+ /* The kernel validates the size of disk logs. */
+ /* FIXME Propagate to any devices below */
+ log_node->props.delay_resume_if_new = 0;
+
if (!_link_tree_nodes(node, log_node))
return_0;
}
}
int dm_tree_node_add_mirror_target(struct dm_tree_node *node,
- uint64_t size)
+ uint64_t size)
+{
+ if (!_add_segment(node, SEG_MIRRORED, size))
+ return_0;
+
+ return 1;
+}
+
+int dm_tree_node_add_raid_target(struct dm_tree_node *node,
+ uint64_t size,
+ const char *raid_type,
+ uint32_t region_size,
+ uint32_t stripe_size,
+ uint64_t rebuilds,
+ uint64_t flags)
+{
+ int i;
+ struct load_segment *seg = NULL;
+
+ for (i = 0; dm_segtypes[i].target && !seg; i++)
+ if (!strcmp(raid_type, dm_segtypes[i].target))
+ if (!(seg = _add_segment(node,
+ dm_segtypes[i].type, size)))
+ return_0;
+
+ if (!seg)
+ return_0;
+
+ seg->region_size = region_size;
+ seg->stripe_size = stripe_size;
+ seg->area_count = 0;
+ seg->rebuilds = rebuilds;
+ seg->flags = flags;
+
+ return 1;
+}
+
+int dm_tree_node_add_replicator_target(struct dm_tree_node *node,
+ uint64_t size,
+ const char *rlog_uuid,
+ const char *rlog_type,
+ unsigned rsite_index,
+ dm_replicator_mode_t mode,
+ uint32_t async_timeout,
+ uint64_t fall_behind_data,
+ uint32_t fall_behind_ios)
+{
+ struct load_segment *rseg;
+ struct replicator_site *rsite;
+
+ /* Local site0 - adds replicator segment and links rlog device */
+ if (rsite_index == REPLICATOR_LOCAL_SITE) {
+ if (node->props.segment_count) {
+ log_error(INTERNAL_ERROR "Attempt to add replicator segment to already used node.");
+ return 0;
+ }
+
+ if (!(rseg = _add_segment(node, SEG_REPLICATOR, size)))
+ return_0;
+
+ if (!(rseg->log = dm_tree_find_node_by_uuid(node->dtree, rlog_uuid))) {
+ log_error("Missing replicator log uuid %s.", rlog_uuid);
+ return 0;
+ }
+
+ if (!_link_tree_nodes(node, rseg->log))
+ return_0;
+
+ if (strcmp(rlog_type, "ringbuffer") != 0) {
+ log_error("Unsupported replicator log type %s.", rlog_type);
+ return 0;
+ }
+
+ if (!(rseg->rlog_type = dm_pool_strdup(node->dtree->mem, rlog_type)))
+ return_0;
+
+ dm_list_init(&rseg->rsites);
+ rseg->rdevice_count = 0;
+ node->activation_priority = 1;
+ }
+
+ /* Add site to segment */
+ if (mode == DM_REPLICATOR_SYNC
+ && (async_timeout || fall_behind_ios || fall_behind_data)) {
+ log_error("Async parameters passed for synchronnous replicator.");
+ return 0;
+ }
+
+ if (node->props.segment_count != 1) {
+ log_error(INTERNAL_ERROR "Attempt to add remote site area before setting replicator log.");
+ return 0;
+ }
+
+ rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment);
+ if (rseg->type != SEG_REPLICATOR) {
+ log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.",
+ dm_segtypes[rseg->type].target);
+ return 0;
+ }
+
+ if (!(rsite = dm_pool_zalloc(node->dtree->mem, sizeof(*rsite)))) {
+ log_error("Failed to allocate remote site segment.");
+ return 0;
+ }
+
+ dm_list_add(&rseg->rsites, &rsite->list);
+ rseg->rsite_count++;
+
+ rsite->mode = mode;
+ rsite->async_timeout = async_timeout;
+ rsite->fall_behind_data = fall_behind_data;
+ rsite->fall_behind_ios = fall_behind_ios;
+ rsite->rsite_index = rsite_index;
+
+ return 1;
+}
+
+/* Appends device node to Replicator */
+int dm_tree_node_add_replicator_dev_target(struct dm_tree_node *node,
+ uint64_t size,
+ const char *replicator_uuid,
+ uint64_t rdevice_index,
+ const char *rdev_uuid,
+ unsigned rsite_index,
+ const char *slog_uuid,
+ uint32_t slog_flags,
+ uint32_t slog_region_size)
+{
+ struct seg_area *area;
+ struct load_segment *rseg;
+ struct load_segment *rep_seg;
+
+ if (rsite_index == REPLICATOR_LOCAL_SITE) {
+ /* Site index for local target */
+ if (!(rseg = _add_segment(node, SEG_REPLICATOR_DEV, size)))
+ return_0;
+
+ if (!(rseg->replicator = dm_tree_find_node_by_uuid(node->dtree, replicator_uuid))) {
+ log_error("Missing replicator uuid %s.", replicator_uuid);
+ return 0;
+ }
+
+ /* Local slink0 for replicator must be always initialized first */
+ if (rseg->replicator->props.segment_count != 1) {
+ log_error(INTERNAL_ERROR "Attempt to use non replicator segment.");
+ return 0;
+ }
+
+ rep_seg = dm_list_item(dm_list_last(&rseg->replicator->props.segs), struct load_segment);
+ if (rep_seg->type != SEG_REPLICATOR) {
+ log_error(INTERNAL_ERROR "Attempt to use non replicator segment %s.",
+ dm_segtypes[rep_seg->type].target);
+ return 0;
+ }
+ rep_seg->rdevice_count++;
+
+ if (!_link_tree_nodes(node, rseg->replicator))
+ return_0;
+
+ rseg->rdevice_index = rdevice_index;
+ } else {
+ /* Local slink0 for replicator must be always initialized first */
+ if (node->props.segment_count != 1) {
+ log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment.");
+ return 0;
+ }
+
+ rseg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment);
+ if (rseg->type != SEG_REPLICATOR_DEV) {
+ log_error(INTERNAL_ERROR "Attempt to use non replicator-dev segment %s.",
+ dm_segtypes[rseg->type].target);
+ return 0;
+ }
+ }
+
+ if (!(slog_flags & DM_CORELOG) && !slog_uuid) {
+ log_error("Unspecified sync log uuid.");
+ return 0;
+ }
+
+ if (!dm_tree_node_add_target_area(node, NULL, rdev_uuid, 0))
+ return_0;
+
+ area = dm_list_item(dm_list_last(&rseg->areas), struct seg_area);
+
+ if (!(slog_flags & DM_CORELOG)) {
+ if (!(area->slog = dm_tree_find_node_by_uuid(node->dtree, slog_uuid))) {
+ log_error("Couldn't find sync log uuid %s.", slog_uuid);
+ return 0;
+ }
+
+ if (!_link_tree_nodes(node, area->slog))
+ return_0;
+ }
+
+ area->flags = slog_flags;
+ area->region_size = slog_region_size;
+ area->rsite_index = rsite_index;
+
+ return 1;
+}
+
+static int _thin_validate_device_id(uint32_t device_id)
+{
+ if (device_id > DM_THIN_MAX_DEVICE_ID) {
+ log_error("Device id %u is higher then %u.",
+ device_id, DM_THIN_MAX_DEVICE_ID);
+ return 0;
+ }
+
+ return 1;
+}
+
+int dm_tree_node_add_thin_pool_target(struct dm_tree_node *node,
+ uint64_t size,
+ uint64_t transaction_id,
+ const char *metadata_uuid,
+ const char *pool_uuid,
+ uint32_t data_block_size,
+ uint64_t low_water_mark,
+ unsigned skip_block_zeroing)
+{
+ struct load_segment *seg, *mseg;
+ uint64_t devsize = 0;
+ /*
+ * Max supported size for thin pool metadata device
+ * Limitation is hardcoded into kernel and bigger
+ * device size is not accepted. (16978542592)
+ */
+ const uint64_t max_metadata_size =
+ 255ULL * (1 << 14) * (4096 / (1 << 9)) - 256 * 1024;
+
+ if (data_block_size < DM_THIN_MIN_DATA_BLOCK_SIZE) {
+ log_error("Data block size %u is lower then %u sectors.",
+ data_block_size, DM_THIN_MIN_DATA_BLOCK_SIZE);
+ return 0;
+ }
+
+ if (data_block_size > DM_THIN_MAX_DATA_BLOCK_SIZE) {
+ log_error("Data block size %u is higher then %u sectors.",
+ data_block_size, DM_THIN_MAX_DATA_BLOCK_SIZE);
+ return 0;
+ }
+
+ if (!(seg = _add_segment(node, SEG_THIN_POOL, size)))
+ return_0;
+
+ if (!(seg->metadata = dm_tree_find_node_by_uuid(node->dtree, metadata_uuid))) {
+ log_error("Missing metadata uuid %s.", metadata_uuid);
+ return 0;
+ }
+
+ if (!_link_tree_nodes(node, seg->metadata))
+ return_0;
+
+ /* FIXME: more complex target may need more tweaks */
+ dm_list_iterate_items(mseg, &seg->metadata->props.segs) {
+ devsize += mseg->size;
+ if (devsize > max_metadata_size) {
+ log_debug("Ignoring %" PRIu64 " of device.",
+ devsize - max_metadata_size);
+ mseg->size -= (devsize - max_metadata_size);
+ devsize = max_metadata_size;
+ /* FIXME: drop remaining segs */
+ }
+ }
+
+ if (!(seg->pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) {
+ log_error("Missing pool uuid %s.", pool_uuid);
+ return 0;
+ }
+
+ if (!_link_tree_nodes(node, seg->pool))
+ return_0;
+
+ node->props.send_messages = 1;
+ seg->transaction_id = transaction_id;
+ seg->low_water_mark = low_water_mark;
+ seg->data_block_size = data_block_size;
+ seg->skip_block_zeroing = skip_block_zeroing;
+ dm_list_init(&seg->thin_messages);
+
+ return 1;
+}
+
+int dm_tree_node_add_thin_pool_message(struct dm_tree_node *node,
+ dm_thin_message_t type,
+ uint64_t id1, uint64_t id2)
+{
+ struct load_segment *seg;
+ struct thin_message *tm;
+
+ if (node->props.segment_count != 1) {
+ log_error("Thin pool node must have only one segment.");
+ return 0;
+ }
+
+ seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment);
+ if (seg->type != SEG_THIN_POOL) {
+ log_error("Thin pool node has segment type %s.",
+ dm_segtypes[seg->type].target);
+ return 0;
+ }
+
+ if (!(tm = dm_pool_zalloc(node->dtree->mem, sizeof (*tm)))) {
+ log_error("Failed to allocate thin message.");
+ return 0;
+ }
+
+ switch (type) {
+ case DM_THIN_MESSAGE_CREATE_SNAP:
+ /* If the thin origin is active, it must be suspend first! */
+ if (id1 == id2) {
+ log_error("Cannot use same device id for origin and its snapshot.");
+ return 0;
+ }
+ if (!_thin_validate_device_id(id1) ||
+ !_thin_validate_device_id(id2))
+ return_0;
+ tm->message.u.m_create_snap.device_id = id1;
+ tm->message.u.m_create_snap.origin_id = id2;
+ break;
+ case DM_THIN_MESSAGE_CREATE_THIN:
+ if (!_thin_validate_device_id(id1))
+ return_0;
+ tm->message.u.m_create_thin.device_id = id1;
+ tm->expected_errno = EEXIST;
+ break;
+ case DM_THIN_MESSAGE_DELETE:
+ if (!_thin_validate_device_id(id1))
+ return_0;
+ tm->message.u.m_delete.device_id = id1;
+ tm->expected_errno = ENODATA;
+ break;
+ case DM_THIN_MESSAGE_SET_TRANSACTION_ID:
+ if ((id1 + 1) != id2) {
+ log_error("New transaction id must be sequential.");
+ return 0; /* FIXME: Maybe too strict here? */
+ }
+ if (id2 != seg->transaction_id) {
+ log_error("Current transaction id is different from thin pool.");
+ return 0; /* FIXME: Maybe too strict here? */
+ }
+ tm->message.u.m_set_transaction_id.current_id = id1;
+ tm->message.u.m_set_transaction_id.new_id = id2;
+ break;
+ default:
+ log_error("Unsupported message type %d.", (int) type);
+ return 0;
+ }
+
+ tm->message.type = type;
+ dm_list_add(&seg->thin_messages, &tm->list);
+
+ return 1;
+}
+
+int dm_tree_node_add_thin_target(struct dm_tree_node *node,
+ uint64_t size,
+ const char *pool_uuid,
+ uint32_t device_id)
{
+ struct dm_tree_node *pool;
struct load_segment *seg;
- if (!(seg = _add_segment(node, SEG_MIRRORED, size)))
+ if (!(pool = dm_tree_find_node_by_uuid(node->dtree, pool_uuid))) {
+ log_error("Missing thin pool uuid %s.", pool_uuid);
+ return 0;
+ }
+
+ if (!_link_tree_nodes(node, pool))
+ return_0;
+
+ if (!_thin_validate_device_id(device_id))
+ return_0;
+
+ if (!(seg = _add_segment(node, SEG_THIN, size)))
return_0;
+ seg->pool = pool;
+ seg->device_id = device_id;
+
+ return 1;
+}
+
+
+int dm_get_status_thin_pool(struct dm_pool *mem, const char *params,
+ struct dm_status_thin_pool **status)
+{
+ struct dm_status_thin_pool *s;
+
+ if (!(s = dm_pool_zalloc(mem, sizeof(struct dm_status_thin_pool)))) {
+ log_error("Failed to allocate thin_pool status structure.");
+ return 0;
+ }
+
+ /* FIXME: add support for held metadata root */
+ if (sscanf(params, "%" PRIu64 " %" PRIu64 "/%" PRIu64 " %" PRIu64 "/%" PRIu64,
+ &s->transaction_id,
+ &s->used_metadata_blocks,
+ &s->total_metadata_blocks,
+ &s->used_data_blocks,
+ &s->total_data_blocks) != 5) {
+ log_error("Failed to parse thin pool params: %s.", params);
+ return 0;
+ }
+
+ *status = s;
+
+ return 1;
+}
+
+int dm_get_status_thin(struct dm_pool *mem, const char *params,
+ struct dm_status_thin **status)
+{
+ struct dm_status_thin *s;
+
+ if (!(s = dm_pool_zalloc(mem, sizeof(struct dm_status_thin)))) {
+ log_error("Failed to allocate thin status structure.");
+ return 0;
+ }
+
+ if (strchr(params, '-')) {
+ s->mapped_sectors = 0;
+ s->highest_mapped_sector = 0;
+ } else if (sscanf(params, "%" PRIu64 " %" PRIu64,
+ &s->mapped_sectors,
+ &s->highest_mapped_sector) != 2) {
+ log_error("Failed to parse thin params: %s.", params);
+ return 0;
+ }
+
+ *status = s;
+
return 1;
}
}
int dm_tree_node_add_target_area(struct dm_tree_node *node,
- const char *dev_name,
- const char *uuid,
- uint64_t offset)
+ const char *dev_name,
+ const char *uuid,
+ uint64_t offset)
{
struct load_segment *seg;
struct stat info;
if (!_link_tree_nodes(node, dev_node))
return_0;
} else {
- if (stat(dev_name, &info) < 0) {
+ if (stat(dev_name, &info) < 0) {
log_error("Device %s not found.", dev_name);
return 0;
}
- if (!S_ISBLK(info.st_mode)) {
+ if (!S_ISBLK(info.st_mode)) {
log_error("Device %s is not a block device.", dev_name);
return 0;
}
return 1;
}
-void dm_tree_set_cookie(struct dm_tree_node *node, uint32_t cookie)
+int dm_tree_node_add_null_area(struct dm_tree_node *node, uint64_t offset)
{
- node->dtree->cookie = cookie;
+ struct load_segment *seg;
+
+ seg = dm_list_item(dm_list_last(&node->props.segs), struct load_segment);
+
+ switch (seg->type) {
+ case SEG_RAID1:
+ case SEG_RAID4:
+ case SEG_RAID5_LA:
+ case SEG_RAID5_RA:
+ case SEG_RAID5_LS:
+ case SEG_RAID5_RS:
+ case SEG_RAID6_ZR:
+ case SEG_RAID6_NR:
+ case SEG_RAID6_NC:
+ break;
+ default:
+ log_error("dm_tree_node_add_null_area() called on an unsupported segment type");
+ return 0;
+ }
+
+ if (!_add_area(node, seg, NULL, offset))
+ return_0;
+
+ return 1;
}
-uint32_t dm_tree_get_cookie(struct dm_tree_node *node)
+void dm_tree_node_set_callback(struct dm_tree_node *dnode,
+ dm_node_callback_fn cb, void *data)
{
- return node->dtree->cookie;
+ dnode->callback = cb;
+ dnode->callback_data = data;
}
git://sourceware.org / lvm2.git / blobdiff