This patch adds the ability to read/write the vg->mda_copies values
from/to the vg metadata.
If we read the VG metadata and this field does not exist, we set
mda_copies to the default value of 0. Later in the code, we use
this special '0' value to indicate a disable of metadata balancing.
This should preserve existing LVM behavior and ensure metadata balancing
can be turned off should the need arise.
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
outf(f, "allocation_policy = \"%s\"",
get_alloc_string(vg->alloc));
}
+ outf(f, "metadata_copies = %u", vg->mda_copies);
return 1;
}
#include "pv_alloc.h"
#include "segtype.h"
#include "text_import.h"
+#include "defaults.h"
typedef int (*section_fn) (struct format_instance * fid, struct dm_pool * mem,
struct volume_group * vg, struct config_node * pvn,
return_0;
}
+ if (!_read_uint32(vgn, "metadata_copies", &vg->mda_copies)) {
+ vg->mda_copies = DEFAULT_VGMETADATACOPIES;
+ }
+
/*
* The pv hash memorises the pv section names -> pv
* structures.