lvm2/lvm2-2_03_12-pool-limit-pmspare-to-16GiB.patch

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lib/metadata/pool_manip.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/lib/metadata/pool_manip.c b/lib/metadata/pool_manip.c
index b67882e..1975cb4 100644
--- a/lib/metadata/pool_manip.c
+++ b/lib/metadata/pool_manip.c
@@ -697,6 +697,8 @@ static struct logical_volume *_alloc_pool_metadata_spare(struct volume_group *vg
int handle_pool_metadata_spare(struct volume_group *vg, uint32_t extents,
struct dm_list *pvh, int poolmetadataspare)
{
+ /* Max usable size of any spare volume is currently 16GiB rouned to extent size */
+ const uint64_t MAX_SIZE = (UINT64_C(2 * 16) * 1024 * 1024 + vg->extent_size - 1) / vg->extent_size;
struct logical_volume *lv = vg->pool_metadata_spare_lv;
uint32_t seg_mirrors;
struct lv_segment *seg;
@@ -706,8 +708,11 @@ int handle_pool_metadata_spare(struct volume_group *vg, uint32_t extents,
/* Find maximal size of metadata LV */
dm_list_iterate_items(lvl, &vg->lvs)
if (lv_is_pool_metadata(lvl->lv) &&
- (lvl->lv->le_count > extents))
+ (lvl->lv->le_count > extents)) {
extents = lvl->lv->le_count;
+ if (extents >= MAX_SIZE)
+ break;
+ }
if (!poolmetadataspare) {
/* TODO: Not showing when lvm.conf would define 'n' ? */
@@ -718,6 +723,9 @@ int handle_pool_metadata_spare(struct volume_group *vg, uint32_t extents,
return 1;
}
+ if (extents > MAX_SIZE)
+ extents = MAX_SIZE;
+
if (!lv) {
if (!_alloc_pool_metadata_spare(vg, extents, pvh))
return_0;