Version 2.02.73 -
================================
+ Fix some exit statuses when starting/stopping monitoring fails.
+ Enable snapshot monitoring by default when dmeventd is enabled.
+ Move cloned libdevmapper-event client code from segments into lib/activate.
Fix 'lvconvert --splitmirrors' in cluster operation.
Fix clvmd init script exit code when executed as non-root user.
Change default alignment of pe_start to 1MB.
Version 1.02.54 -
================================
+ Add dmeventd/executable to lvm.conf to test alternative dmeventd.
+ Export dm_event_handler_set_dmeventd_path to override built-in dmeventd path.
+ Generate libdevmapper-event exported symbols.
Remove superfluous NULL pointer tests before dm_free from dmeventd.
Assume dm-mod autoloading support is in kernel 2.6.36 and higher, not 2.6.35.
Fix udev rules to support udev database content generated by older rules.
DM_DEVICE_MODE
DM_DEVICE_GID
DM_COMPAT
+DMEVENTD_PATH
DMEVENTD
DL_LIBS
DEVMAPPER
with_optimisation
enable_profiling
enable_testing
+enable_valgrind_pool
enable_devmapper
enable_udev_sync
enable_udev_rules
--enable-debug enable debugging
--enable-profiling gather gcov profiling data
--enable-testing enable testing targets in the makefile
+ --enable-valgrind-pool enable valgrind awareness of pools
--disable-devmapper disable LVM2 device-mapper interaction
--enable-udev_sync enable synchronisation with udev processing
--enable-udev_rules install rule files needed for udev synchronisation
fi
fi
+################################################################################
+{ $as_echo "$as_me:$LINENO: checking whether to enable valgrind awareness of pools" >&5
+$as_echo_n "checking whether to enable valgrind awareness of pools... " >&6; }
+# Check whether --enable-valgrind_pool was given.
+if test "${enable_valgrind_pool+set}" = set; then
+ enableval=$enable_valgrind_pool; VALGRIND_POOL=$enableval
+else
+ VALGRIND_POOL=no
+fi
+
+{ $as_echo "$as_me:$LINENO: result: $VALGRIND_POOL" >&5
+$as_echo "$VALGRIND_POOL" >&6; }
+
+if test "$VALGRIND_POOL" = yes; then
+
+for ac_header in valgrind/memcheck.h
+do
+as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+ { $as_echo "$as_me:$LINENO: checking for $ac_header" >&5
+$as_echo_n "checking for $ac_header... " >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+ $as_echo_n "(cached) " >&6
+fi
+ac_res=`eval 'as_val=${'$as_ac_Header'}
+ $as_echo "$as_val"'`
+ { $as_echo "$as_me:$LINENO: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+else
+ # Is the header compilable?
+{ $as_echo "$as_me:$LINENO: checking $ac_header usability" >&5
+$as_echo_n "checking $ac_header usability... " >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+$ac_includes_default
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
+$as_echo "$ac_try_echo") >&5
+ (eval "$ac_compile") 2>conftest.er1
+ ac_status=$?
+ grep -v '^ *+' conftest.er1 >conftest.err
+ rm -f conftest.er1
+ cat conftest.err >&5
+ $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } && {
+ test -z "$ac_c_werror_flag" ||
+ test ! -s conftest.err
+ } && test -s conftest.$ac_objext; then
+ ac_header_compiler=yes
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ $as_echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+$as_echo "$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ $as_echo "$as_me:$LINENO: checking $ac_header presence" >&5
+$as_echo_n "checking $ac_header presence... " >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h. */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h. */
+#include <$ac_header>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+ *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+ *) ac_try_echo=$ac_try;;
+esac
+eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
+$as_echo "$ac_try_echo") >&5
+ (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+ ac_status=$?
+ grep -v '^ *+' conftest.er1 >conftest.err
+ rm -f conftest.er1
+ cat conftest.err >&5
+ $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
+ (exit $ac_status); } >/dev/null && {
+ test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+ test ! -s conftest.err
+ }; then
+ ac_header_preproc=yes
+else
+ $as_echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ ac_header_preproc=no
+fi
+
+rm -f conftest.err conftest.$ac_ext
+{ $as_echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+$as_echo "$ac_header_preproc" >&6; }
+
+# So? What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+ yes:no: )
+ { $as_echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
+$as_echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
+ { $as_echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
+$as_echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
+ ac_header_preproc=yes
+ ;;
+ no:yes:* )
+ { $as_echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
+$as_echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
+ { $as_echo "$as_me:$LINENO: WARNING: $ac_header: check for missing prerequisite headers?" >&5
+$as_echo "$as_me: WARNING: $ac_header: check for missing prerequisite headers?" >&2;}
+ { $as_echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
+$as_echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
+ { $as_echo "$as_me:$LINENO: WARNING: $ac_header: section \"Present But Cannot Be Compiled\"" >&5
+$as_echo "$as_me: WARNING: $ac_header: section \"Present But Cannot Be Compiled\"" >&2;}
+ { $as_echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
+$as_echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
+ { $as_echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
+$as_echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
+
+ ;;
+esac
+{ $as_echo "$as_me:$LINENO: checking for $ac_header" >&5
+$as_echo_n "checking for $ac_header... " >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+ $as_echo_n "(cached) " >&6
+else
+ eval "$as_ac_Header=\$ac_header_preproc"
+fi
+ac_res=`eval 'as_val=${'$as_ac_Header'}
+ $as_echo "$as_val"'`
+ { $as_echo "$as_me:$LINENO: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+
+fi
+as_val=`eval 'as_val=${'$as_ac_Header'}
+ $as_echo "$as_val"'`
+ if test "x$as_val" = x""yes; then
+ cat >>confdefs.h <<_ACEOF
+#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+else
+ { { $as_echo "$as_me:$LINENO: error: bailing out" >&5
+$as_echo "$as_me: error: bailing out" >&2;}
+ { (exit 1); exit 1; }; }
+fi
+
+done
+
+
+cat >>confdefs.h <<\_ACEOF
+#define VALGRIND_POOL 1
+_ACEOF
+
+fi
+
################################################################################
{ $as_echo "$as_me:$LINENO: checking whether to use device-mapper" >&5
$as_echo_n "checking whether to use device-mapper... " >&6; }
+
################################################################################
-ac_config_files="$ac_config_files Makefile make.tmpl daemons/Makefile daemons/clvmd/Makefile daemons/cmirrord/Makefile daemons/dmeventd/Makefile daemons/dmeventd/libdevmapper-event.pc daemons/dmeventd/plugins/Makefile daemons/dmeventd/plugins/lvm2/Makefile daemons/dmeventd/plugins/mirror/Makefile daemons/dmeventd/plugins/snapshot/Makefile doc/Makefile doc/example.conf include/.symlinks include/Makefile lib/Makefile lib/format1/Makefile lib/format_pool/Makefile lib/locking/Makefile lib/mirror/Makefile lib/replicator/Makefile lib/misc/lvm-version.h lib/snapshot/Makefile libdm/Makefile libdm/libdevmapper.pc liblvm/Makefile liblvm/liblvm2app.pc man/Makefile po/Makefile scripts/clvmd_init_red_hat scripts/cmirrord_init_red_hat scripts/lvm2_monitoring_init_red_hat scripts/Makefile test/Makefile test/api/Makefile tools/Makefile udev/Makefile unit-tests/datastruct/Makefile unit-tests/regex/Makefile"
+ac_config_files="$ac_config_files Makefile make.tmpl daemons/Makefile daemons/clvmd/Makefile daemons/cmirrord/Makefile daemons/dmeventd/Makefile daemons/dmeventd/libdevmapper-event.pc daemons/dmeventd/plugins/Makefile daemons/dmeventd/plugins/lvm2/Makefile daemons/dmeventd/plugins/mirror/Makefile daemons/dmeventd/plugins/snapshot/Makefile doc/Makefile doc/example.conf include/.symlinks include/Makefile lib/Makefile lib/format1/Makefile lib/format_pool/Makefile lib/locking/Makefile lib/mirror/Makefile lib/replicator/Makefile lib/misc/lvm-version.h lib/snapshot/Makefile libdm/Makefile libdm/libdevmapper.pc liblvm/Makefile liblvm/liblvm2app.pc man/Makefile po/Makefile scripts/clvmd_init_red_hat scripts/cmirrord_init_red_hat scripts/lvm2_monitoring_init_red_hat scripts/Makefile test/Makefile test/api/Makefile tools/Makefile udev/Makefile unit-tests/datastruct/Makefile unit-tests/regex/Makefile unit-tests/mm/Makefile"
cat >confcache <<\_ACEOF
# This file is a shell script that caches the results of configure
"udev/Makefile") CONFIG_FILES="$CONFIG_FILES udev/Makefile" ;;
"unit-tests/datastruct/Makefile") CONFIG_FILES="$CONFIG_FILES unit-tests/datastruct/Makefile" ;;
"unit-tests/regex/Makefile") CONFIG_FILES="$CONFIG_FILES unit-tests/regex/Makefile" ;;
+ "unit-tests/mm/Makefile") CONFIG_FILES="$CONFIG_FILES unit-tests/mm/Makefile" ;;
*) { { $as_echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
$as_echo "$as_me: error: invalid argument: $ac_config_target" >&2;}
AC_SUBST(DLM_LIBS)
AC_SUBST(DL_LIBS)
AC_SUBST(DMEVENTD)
+AC_SUBST(DMEVENTD_PATH)
AC_SUBST(DM_COMPAT)
AC_SUBST(DM_DEVICE_GID)
AC_SUBST(DM_DEVICE_MODE)
-dm_event_handler_create
-dm_event_handler_destroy
-dm_event_handler_set_dso
-dm_event_handler_set_dev_name
-dm_event_handler_set_uuid
-dm_event_handler_set_major
-dm_event_handler_set_minor
-dm_event_handler_set_event_mask
-dm_event_handler_get_dso
-dm_event_handler_get_devname
-dm_event_handler_get_uuid
-dm_event_handler_get_major
-dm_event_handler_get_minor
-dm_event_handler_get_event_mask
-dm_event_register_handler
-dm_event_unregister_handler
-dm_event_get_registered_device
-dm_event_handler_set_timeout
-dm_event_handler_get_timeout
CFLOW_LIST_TARGET = $(LIB_NAME).cflow
CFLOW_TARGET = dmeventd
+EXPORTED_HEADER = $(srcdir)/libdevmapper-event.h
+EXPORTED_FN_PREFIX = dm_event
+
include $(top_builddir)/make.tmpl
all: device-mapper
install_device-mapper: install_include install_lib install_dmeventd
-DISTCLEAN_TARGETS += libdevmapper-event.pc
+DISTCLEAN_TARGETS += libdevmapper-event.pc .exported_symbols_generated
struct dm_event_handler {
char *dso;
+ char *dmeventd_path;
+
char *dev_name;
char *uuid;
if (!(dmevh = dm_malloc(sizeof(*dmevh))))
return NULL;
+ dmevh->dmeventd_path = NULL;
dmevh->dso = dmevh->dev_name = dmevh->uuid = NULL;
dmevh->major = dmevh->minor = 0;
dmevh->mask = 0;
{
_dm_event_handler_clear_dev_info(dmevh);
dm_free(dmevh->dso);
+ dm_free(dmevh->dmeventd_path);
dm_free(dmevh);
}
+int dm_event_handler_set_dmeventd_path(struct dm_event_handler *dmevh, const char *dmeventd_path)
+{
+ if (!dmeventd_path) /* noop */
+ return 0;
+
+ dm_free(dmevh->dmeventd_path);
+
+ dmevh->dmeventd_path = dm_strdup(dmeventd_path);
+ if (!dmevh->dmeventd_path)
+ return -ENOMEM;
+
+ return 0;
+}
+
int dm_event_handler_set_dso(struct dm_event_handler *dmevh, const char *path)
{
if (!path) /* noop */
*
* Returns: 1 on success, 0 otherwise
*/
-static int _start_daemon(struct dm_event_fifos *fifos)
+static int _start_daemon(char *dmeventd_path, struct dm_event_fifos *fifos)
{
int pid, ret = 0;
int status;
struct stat statbuf;
- char dmeventdpath[] = DMEVENTD_PATH; /* const type for execvp */
- char * const args[] = { dmeventdpath, NULL };
+ char default_dmeventd_path[] = DMEVENTD_PATH;
+ char *args[] = { dmeventd_path ? : default_dmeventd_path, NULL };
if (stat(fifos->client_path, &statbuf))
goto start_server;
}
/* Initialize client. */
-static int _init_client(struct dm_event_fifos *fifos)
+static int _init_client(char *dmeventd_path, struct dm_event_fifos *fifos)
{
/* FIXME? Is fifo the most suitable method? Why not share
comms/daemon code with something else e.g. multipath? */
/* init fifos */
memset(fifos, 0, sizeof(*fifos));
+
+ /* FIXME Make these either configurable or depend directly on dmeventd_path */
fifos->client_path = DM_EVENT_FIFO_CLIENT;
fifos->server_path = DM_EVENT_FIFO_SERVER;
- if (!_start_daemon(fifos)) {
+ if (!_start_daemon(dmeventd_path, fifos)) {
stack;
return 0;
}
}
/* Handle the event (de)registration call and return negative error codes. */
-static int _do_event(int cmd, struct dm_event_daemon_message *msg,
+static int _do_event(int cmd, char *dmeventd_path, struct dm_event_daemon_message *msg,
const char *dso_name, const char *dev_name,
enum dm_event_mask evmask, uint32_t timeout)
{
int ret;
struct dm_event_fifos fifos;
- if (!_init_client(&fifos)) {
+ if (!_init_client(dmeventd_path, &fifos)) {
stack;
return -ESRCH;
}
uuid = dm_task_get_uuid(dmt);
- if ((err = _do_event(DM_EVENT_CMD_REGISTER_FOR_EVENT, &msg,
+ if ((err = _do_event(DM_EVENT_CMD_REGISTER_FOR_EVENT, dmevh->dmeventd_path, &msg,
dmevh->dso, uuid, dmevh->mask, dmevh->timeout)) < 0) {
log_error("%s: event registration failed: %s",
dm_task_get_name(dmt),
uuid = dm_task_get_uuid(dmt);
- if ((err = _do_event(DM_EVENT_CMD_UNREGISTER_FOR_EVENT, &msg,
+ if ((err = _do_event(DM_EVENT_CMD_UNREGISTER_FOR_EVENT, dmevh->dmeventd_path, &msg,
dmevh->dso, uuid, dmevh->mask, dmevh->timeout)) < 0) {
log_error("%s: event deregistration failed: %s",
dm_task_get_name(dmt),
uuid = dm_task_get_uuid(dmt);
if (!(ret = _do_event(next ? DM_EVENT_CMD_GET_NEXT_REGISTERED_DEVICE :
- DM_EVENT_CMD_GET_REGISTERED_DEVICE,
+ DM_EVENT_CMD_GET_REGISTERED_DEVICE, dmevh->dmeventd_path,
&msg, dmevh->dso, uuid, dmevh->mask, 0))) {
/* FIXME this will probably horribly break if we get
ill-formatted reply */
/*
* Path of shared library to handle events.
*
- * All of dso, device_name and uuid strings are duplicated, you do not
- * need to keep the pointers valid after the call succeeds. Thes may
- * return -ENOMEM though.
+ * All of dmeventd, dso, device_name and uuid strings are duplicated so
+ * you do not need to keep the pointers valid after the call succeeds.
+ * They may return -ENOMEM though.
*/
int dm_event_handler_set_dso(struct dm_event_handler *dmevh, const char *path);
+/*
+ * Path of dmeventd binary.
+ */
+int dm_event_handler_set_dmeventd_path(struct dm_event_handler *dmevh, const char *dmeventd_path);
+
/*
* Identify the device to monitor by exactly one of device_name, uuid or
* device number. String arguments are duplicated, see above.
# snapshot_library is the library used when monitoring a snapshot device.
#
# "libdevmapper-event-lvm2snapshot.so" monitors the filling of
- # snapshots and emits a warning through syslog, when the use of
- # snapshot exceedes 80%. The warning is repeated when 85%, 90% and
- # 95% of the snapshot are filled.
+ # snapshots and emits a warning through syslog when the use of
+ # the snapshot exceeds 80%. The warning is repeated when 85%, 90% and
+ # 95% of the snapshot is filled.
snapshot_library = "libdevmapper-event-lvm2snapshot.so"
+
+ # Full path of the dmeventd binary.
+ #
+ # executable = "@DMEVENTD_PATH@"
}
#include "config.h"
#include "filter.h"
#include "segtype.h"
+#include "sharedlib.h"
#include <limits.h>
#include <fcntl.h>
return 1;
}
+#ifdef DMEVENTD
+static struct dm_event_handler *_create_dm_event_handler(struct cmd_context *cmd, const char *dmuuid, const char *dso,
+ const int timeout, enum dm_event_mask mask)
+{
+ struct dm_event_handler *dmevh;
+
+ if (!(dmevh = dm_event_handler_create()))
+ return_NULL;
+
+ if (dm_event_handler_set_dmeventd_path(dmevh, find_config_tree_str(cmd, "dmeventd/executable", NULL)))
+ goto_bad;
+
+ if (dm_event_handler_set_dso(dmevh, dso))
+ goto_bad;
+
+ if (dm_event_handler_set_uuid(dmevh, dmuuid))
+ goto_bad;
+
+ dm_event_handler_set_timeout(dmevh, timeout);
+ dm_event_handler_set_event_mask(dmevh, mask);
+
+ return dmevh;
+
+bad:
+ dm_event_handler_destroy(dmevh);
+ return NULL;
+}
+
+char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath)
+{
+ char *path;
+
+ if (!(path = dm_pool_alloc(cmd->mem, PATH_MAX))) {
+ log_error("Failed to allocate dmeventd library path.");
+ return NULL;
+ }
+
+ get_shared_library_path(cmd, libpath, path, PATH_MAX);
+
+ return path;
+}
+
+int target_registered_with_dmeventd(struct cmd_context *cmd, const char *dso, const char *lvid, int *pending)
+{
+ char *uuid;
+ enum dm_event_mask evmask = 0;
+ struct dm_event_handler *dmevh;
+
+ *pending = 0;
+
+ if (!dso)
+ return_0;
+
+ if (!(uuid = build_dm_uuid(cmd->mem, lvid, NULL)))
+ return_0;
+
+ if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, 0, DM_EVENT_ALL_ERRORS)))
+ return_0;
+
+ if (dm_event_get_registered_device(dmevh, 0)) {
+ dm_event_handler_destroy(dmevh);
+ return 0;
+ }
+
+ evmask = dm_event_handler_get_event_mask(dmevh);
+ if (evmask & DM_EVENT_REGISTRATION_PENDING) {
+ *pending = 1;
+ evmask &= ~DM_EVENT_REGISTRATION_PENDING;
+ }
+
+ dm_event_handler_destroy(dmevh);
+
+ return evmask;
+}
+
+int target_register_events(struct cmd_context *cmd, const char *dso, const char *lvid,
+ int evmask __attribute__((unused)), int set, int timeout)
+{
+ char *uuid;
+ struct dm_event_handler *dmevh;
+ int r;
+
+ if (!dso)
+ return_0;
+
+ if (!(uuid = build_dm_uuid(cmd->mem, lvid, NULL)))
+ return_0;
+
+ if (!(dmevh = _create_dm_event_handler(cmd, uuid, dso, timeout,
+ DM_EVENT_ALL_ERRORS | (timeout ? DM_EVENT_TIMEOUT : 0))))
+ return_0;
+
+ r = set ? dm_event_register_handler(dmevh) : dm_event_unregister_handler(dmevh);
+
+ dm_event_handler_destroy(dmevh);
+
+ if (!r)
+ return_0;
+
+ log_info("%s %s for events", set ? "Monitored" : "Unmonitored", uuid);
+
+ return 1;
+}
+
+#endif
+
/*
* Returns 0 if an attempt to (un)monitor the device failed.
* Returns 1 otherwise.
int target_present(struct cmd_context *cmd, const char *target_name,
int use_modprobe);
int target_version(const char *target_name, uint32_t *maj,
- uint32_t *min, uint32_t *patchlevel);
+ uint32_t *min, uint32_t *patchlevel);
int list_segment_modules(struct dm_pool *mem, const struct lv_segment *seg,
struct dm_list *modules);
int list_lv_modules(struct dm_pool *mem, const struct logical_volume *lv,
int monitor_dev_for_events(struct cmd_context *cmd,
struct logical_volume *lv, int do_reg);
+#ifdef DMEVENTD
+# include "libdevmapper-event.h"
+char *get_monitor_dso_path(struct cmd_context *cmd, const char *libpath);
+int target_registered_with_dmeventd(struct cmd_context *cmd, const char *libpath, const char *lvid, int *pending);
+int target_register_events(struct cmd_context *cmd, const char *dso, const char *lvid,
+ int evmask __attribute__((unused)), int set, int timeout);
+#endif
+
/*
* Returns 1 if PV has a dependency tree that uses anything in VG.
*/
#define DEFAULT_MIRROR_IMAGE_FAULT_POLICY "remove"
#define DEFAULT_MIRROR_MAX_IMAGES 8 /* limited by kernel DM_KCOPYD_MAX_REGIONS */
#define DEFAULT_DMEVENTD_MIRROR_LIB "libdevmapper-event-lvm2mirror.so"
+#define DEFAULT_DMEVENTD_SNAPSHOT_LIB "libdevmapper-event-lvm2snapshot.so"
#define DEFAULT_DMEVENTD_MONITOR 1
#define DEFAULT_BACKGROUND_POLLING 1
#include <sys/utsname.h>
-#ifdef DMEVENTD
-# include "libdevmapper-event.h"
-#endif
-
static int _block_on_error_available = 0;
static unsigned _mirror_attributes = 0;
} else if (module_present(cmd, "log-userspace"))
_mirror_attributes |= MIRROR_LOG_CLUSTERED;
- if (!(_mirror_attributes & MIRROR_LOG_CLUSTERED))
- log_verbose("Cluster mirror log module is not available");
+ if (!(_mirror_attributes & MIRROR_LOG_CLUSTERED))
+ log_verbose("Cluster mirror log module is not available");
- /*
- * The cluster mirror log daemon must be running,
- * otherwise, the kernel module will fail to make
- * contact.
- */
+ /*
+ * The cluster mirror log daemon must be running,
+ * otherwise, the kernel module will fail to make
+ * contact.
+ */
#ifdef CMIRRORD_PIDFILE
- if (!dm_daemon_is_running(CMIRRORD_PIDFILE)) {
- log_verbose("Cluster mirror log daemon is not running");
- _mirror_attributes &= ~MIRROR_LOG_CLUSTERED;
- }
+ if (!dm_daemon_is_running(CMIRRORD_PIDFILE)) {
+ log_verbose("Cluster mirror log daemon is not running");
+ _mirror_attributes &= ~MIRROR_LOG_CLUSTERED;
+ }
#else
log_verbose("Cluster mirror log daemon not included in build");
_mirror_attributes &= ~MIRROR_LOG_CLUSTERED;
}
#ifdef DMEVENTD
-static int _get_mirror_dso_path(struct cmd_context *cmd, char **dso)
+static const char *_get_mirror_dso_path(struct cmd_context *cmd)
{
- char *path;
- const char *libpath;
-
- if (!(path = dm_pool_alloc(cmd->mem, PATH_MAX))) {
- log_error("Failed to allocate dmeventd library path.");
- return 0;
- }
-
- libpath = find_config_tree_str(cmd, "dmeventd/mirror_library",
- DEFAULT_DMEVENTD_MIRROR_LIB);
-
- get_shared_library_path(cmd, libpath, path, PATH_MAX);
-
- *dso = path;
-
- return 1;
+ return get_monitor_dso_path(cmd, find_config_tree_str(cmd, "dmeventd/mirror_library",
+ DEFAULT_DMEVENTD_MIRROR_LIB));
}
-static struct dm_event_handler *_create_dm_event_handler(const char *dmuuid,
- const char *dso,
- enum dm_event_mask mask)
+static int _target_registered(struct lv_segment *seg, int *pending)
{
- struct dm_event_handler *dmevh;
-
- if (!(dmevh = dm_event_handler_create()))
- return_0;
-
- if (dm_event_handler_set_dso(dmevh, dso))
- goto fail;
-
- if (dm_event_handler_set_uuid(dmevh, dmuuid))
- goto fail;
-
- dm_event_handler_set_event_mask(dmevh, mask);
- return dmevh;
-
-fail:
- dm_event_handler_destroy(dmevh);
- return NULL;
-}
-
-static int _target_monitored(struct lv_segment *seg, int *pending)
-{
- char *dso, *uuid;
- struct logical_volume *lv;
- struct volume_group *vg;
- enum dm_event_mask evmask = 0;
- struct dm_event_handler *dmevh;
-
- lv = seg->lv;
- vg = lv->vg;
-
- *pending = 0;
- if (!_get_mirror_dso_path(vg->cmd, &dso))
- return_0;
-
- if (!(uuid = build_dm_uuid(vg->cmd->mem, lv->lvid.s, NULL)))
- return_0;
-
- if (!(dmevh = _create_dm_event_handler(uuid, dso, DM_EVENT_ALL_ERRORS)))
- return_0;
-
- if (dm_event_get_registered_device(dmevh, 0)) {
- dm_event_handler_destroy(dmevh);
- return 0;
- }
-
- evmask = dm_event_handler_get_event_mask(dmevh);
- if (evmask & DM_EVENT_REGISTRATION_PENDING) {
- *pending = 1;
- evmask &= ~DM_EVENT_REGISTRATION_PENDING;
- }
-
- dm_event_handler_destroy(dmevh);
-
- return evmask;
+ return target_registered_with_dmeventd(seg->lv->vg->cmd, _get_mirror_dso_path(seg->lv->vg->cmd),
+ seg->lv->lvid.s, pending);
}
/* FIXME This gets run while suspended and performs banned operations. */
-static int _target_set_events(struct lv_segment *seg,
- int evmask __attribute__((unused)), int set)
+static int _target_set_events(struct lv_segment *seg, int evmask, int set)
{
- char *dso, *uuid;
- struct logical_volume *lv;
- struct volume_group *vg;
- struct dm_event_handler *dmevh;
- int r;
-
- lv = seg->lv;
- vg = lv->vg;
-
- if (!_get_mirror_dso_path(vg->cmd, &dso))
- return_0;
-
- if (!(uuid = build_dm_uuid(vg->cmd->mem, lv->lvid.s, NULL)))
- return_0;
-
- if (!(dmevh = _create_dm_event_handler(uuid, dso, DM_EVENT_ALL_ERRORS)))
- return_0;
-
- r = set ? dm_event_register_handler(dmevh) : dm_event_unregister_handler(dmevh);
- dm_event_handler_destroy(dmevh);
- if (!r)
- return_0;
-
- log_info("%s %s for events", set ? "Monitored" : "Unmonitored", uuid);
-
- return 1;
+ return target_register_events(seg->lv->vg->cmd, _get_mirror_dso_path(seg->lv->vg->cmd),
+ seg->lv->lvid.s, evmask, set, 0);
}
static int _target_monitor_events(struct lv_segment *seg, int events)
.target_present = _mirrored_target_present,
.check_transient_status = _mirrored_transient_status,
#ifdef DMEVENTD
- .target_monitored = _target_monitored,
+ .target_monitored = _target_registered,
.target_monitor_events = _target_monitor_events,
.target_unmonitor_events = _target_unmonitor_events,
#endif
segtype->ops = &_mirrored_ops;
segtype->name = "mirror";
segtype->private = NULL;
- segtype->flags = SEG_AREAS_MIRRORED | SEG_MONITORED;
+ segtype->flags = SEG_AREAS_MIRRORED;
+
+#ifdef DMEVENTD
+ if (_get_mirror_dso_path(cmd))
+ segtype->flags |= SEG_MONITORED;
+#endif
log_very_verbose("Initialised segtype: %s", segtype->name);
/* Define to 1 if you have the <utmpx.h> header file. */
#undef HAVE_UTMPX_H
+/* Define to 1 if you have the <valgrind/memcheck.h> header file. */
+#undef HAVE_VALGRIND_MEMCHECK_H
+
/* Define to 1 if you have the `vfork' function. */
#undef HAVE_VFORK
/* Define to 1 to enable synchronisation with udev processing. */
#undef UDEV_SYNC_SUPPORT
+/* Enable a valgrind aware build of pool */
+#undef VALGRIND_POOL
+
/* Define for Solaris 2.5.1 so the uint32_t typedef from <sys/synch.h>,
<pthread.h>, or <semaphore.h> is not used. If the typedef were allowed, the
#define below would cause a syntax error. */
#include "config.h"
#include "activate.h"
#include "str_list.h"
-#ifdef DMEVENTD
-# include "sharedlib.h"
-# include "libdevmapper-event.h"
-#endif
+#include "defaults.h"
static const char *_snap_name(const struct lv_segment *seg)
{
}
#ifdef DMEVENTD
-static int _get_snapshot_dso_path(struct cmd_context *cmd, char **dso)
-{
- char *path;
- const char *libpath;
-
- if (!(path = dm_pool_alloc(cmd->mem, PATH_MAX))) {
- log_error("Failed to allocate dmeventd library path.");
- return 0;
- }
-
- libpath = find_config_tree_str(cmd, "dmeventd/snapshot_library", NULL);
- if (!libpath)
- return 0;
-
- get_shared_library_path(cmd, libpath, path, PATH_MAX);
-
- *dso = path;
- return 1;
-}
-
-static struct dm_event_handler *_create_dm_event_handler(const char *dmuuid,
- const char *dso,
- const int timeout,
- enum dm_event_mask mask)
+static const char *_get_snapshot_dso_path(struct cmd_context *cmd)
{
- struct dm_event_handler *dmevh;
-
- if (!(dmevh = dm_event_handler_create()))
- return_0;
-
- if (dm_event_handler_set_dso(dmevh, dso))
- goto fail;
-
- if (dm_event_handler_set_uuid(dmevh, dmuuid))
- goto fail;
-
- dm_event_handler_set_timeout(dmevh, timeout);
- dm_event_handler_set_event_mask(dmevh, mask);
- return dmevh;
-
-fail:
- dm_event_handler_destroy(dmevh);
- return NULL;
+ return get_monitor_dso_path(cmd, find_config_tree_str(cmd, "dmeventd/snapshot_library",
+ DEFAULT_DMEVENTD_SNAPSHOT_LIB));
}
static int _target_registered(struct lv_segment *seg, int *pending)
{
- char *dso, *uuid;
- struct logical_volume *lv;
- struct volume_group *vg;
- enum dm_event_mask evmask = 0;
- struct dm_event_handler *dmevh;
-
- lv = seg->lv;
- vg = lv->vg;
-
- *pending = 0;
- if (!_get_snapshot_dso_path(vg->cmd, &dso))
- return_0;
-
- if (!(uuid = build_dm_uuid(vg->cmd->mem, seg->cow->lvid.s, NULL)))
- return_0;
-
- if (!(dmevh = _create_dm_event_handler(uuid, dso, 0, DM_EVENT_ALL_ERRORS)))
- return_0;
-
- if (dm_event_get_registered_device(dmevh, 0)) {
- dm_event_handler_destroy(dmevh);
- return 0;
- }
-
- evmask = dm_event_handler_get_event_mask(dmevh);
- if (evmask & DM_EVENT_REGISTRATION_PENDING) {
- *pending = 1;
- evmask &= ~DM_EVENT_REGISTRATION_PENDING;
- }
-
- dm_event_handler_destroy(dmevh);
-
- return evmask;
+ return target_registered_with_dmeventd(seg->lv->vg->cmd, _get_snapshot_dso_path(seg->lv->vg->cmd),
+ seg->cow->lvid.s, pending);
}
/* FIXME This gets run while suspended and performs banned operations. */
-static int _target_set_events(struct lv_segment *seg,
- int events __attribute__((unused)), int set)
+static int _target_set_events(struct lv_segment *seg, int evmask, int set)
{
- char *dso, *uuid;
- struct volume_group *vg = seg->lv->vg;
- struct dm_event_handler *dmevh;
- int r;
-
- if (!_get_snapshot_dso_path(vg->cmd, &dso))
- return_0;
-
- if (!(uuid = build_dm_uuid(vg->cmd->mem, seg->cow->lvid.s, NULL)))
- return_0;
-
- /* FIXME: make timeout configurable */
- if (!(dmevh = _create_dm_event_handler(uuid, dso, 10,
- DM_EVENT_ALL_ERRORS|DM_EVENT_TIMEOUT)))
- return_0;
-
- r = set ? dm_event_register_handler(dmevh) : dm_event_unregister_handler(dmevh);
- dm_event_handler_destroy(dmevh);
- if (!r)
- return_0;
-
- log_info("%s %s for events", set ? "Registered" : "Unregistered", uuid);
-
- return 1;
+ /* FIXME Make timeout (10) configurable */
+ return target_register_events(seg->lv->vg->cmd, _get_snapshot_dso_path(seg->lv->vg->cmd),
+ seg->cow->lvid.s, evmask, set, 10);
}
static int _target_register_events(struct lv_segment *seg,
#endif
{
struct segment_type *segtype = dm_malloc(sizeof(*segtype));
-#ifdef DMEVENTD
- char *dso;
-#endif
if (!segtype)
return_NULL;
segtype->flags = SEG_SNAPSHOT;
#ifdef DMEVENTD
- if (_get_snapshot_dso_path(cmd, &dso))
+ if (_get_snapshot_dso_path(cmd))
segtype->flags |= SEG_MONITORED;
#endif
log_very_verbose("Initialised segtype: %s", segtype->name);
if ((dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) &&
!monitor_dev_for_events(cmd, lv, dmeventd_monitor_mode()))
- stack;
+ return_0;
return 1;
}
#include "tools.h"
+/*
+ * Increments *count by the number of _new_ monitored devices.
+ */
static int _monitor_lvs_in_vg(struct cmd_context *cmd,
- struct volume_group *vg, int reg)
+ struct volume_group *vg, int reg, int *count)
{
struct lv_list *lvl;
struct logical_volume *lv;
struct lvinfo info;
int lv_active;
- int count = 0;
+ int r = ECMD_PROCESSED;
dm_list_iterate_items(lvl, &vg->lvs) {
lv = lvl->lv;
continue;
if (!monitor_dev_for_events(cmd, lv, reg)) {
+ r = ECMD_FAILED;
continue;
} else
- count++;
+ (*count)++;
}
- /*
- * returns the number of _new_ monitored devices
- */
-
- return count;
+ return r;
}
static int _poll_lvs_in_vg(struct cmd_context *cmd,
static int _vgchange_monitoring(struct cmd_context *cmd, struct volume_group *vg)
{
- int monitored;
+ int ret_max = ECMD_PROCESSED;
+ int monitored = 0;
if (lvs_in_vg_activated(vg) &&
dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) {
- monitored = _monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode());
+ ret_max = max(ret_max, _monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode(), &monitored));
log_print("%d logical volume(s) in volume group "
"\"%s\" %smonitored",
monitored, vg->name, (dmeventd_monitor_mode()) ? "" : "un");
}
- return ECMD_PROCESSED;
+ return ret_max;
}
static int _vgchange_background_polling(struct cmd_context *cmd, struct volume_group *vg)
static int _vgchange_available(struct cmd_context *cmd, struct volume_group *vg)
{
int lv_open, active, monitored;
- int available, ret;
+ int available, ret_max = ECMD_PROCESSED;
int activate = 1;
/*
log_verbose("%d logical volume(s) in volume group \"%s\" "
"already active", active, vg->name);
if (dmeventd_monitor_mode() != DMEVENTD_MONITOR_IGNORE) {
- monitored = _monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode());
+ ret_max = max(ret_max, _monitor_lvs_in_vg(cmd, vg, dmeventd_monitor_mode(), &monitored));
log_verbose("%d existing logical volume(s) in volume "
"group \"%s\" %smonitored",
monitored, vg->name,
}
}
- ret = _activate_lvs_in_vg(cmd, vg, available);
+ ret_max = max(ret_max, _activate_lvs_in_vg(cmd, vg, available));
/* Print message only if there was not found a missing VG */
if (!vg->cmd_missing_vgs)
log_print("%d logical volume(s) in volume group \"%s\" now active",
lvs_in_vg_activated(vg), vg->name);
- return ret;
+ return ret_max;
}
static int _vgchange_alloc(struct cmd_context *cmd, struct volume_group *vg)
git://sourceware.org / lvm2.git / commitdiff