diff options
| author | Jakub Radtke <jakub.radtke@intel.com> | 2021-01-15 06:46:55 +0100 |
|---|---|---|
| committer | Jes Sorensen <jsorensen@fb.com> | 2021-03-09 23:17:43 +0100 |
| commit | b554ab5c9bba537b4a282b3863ead6b3b52dd2e1 (patch) | |
| tree | 0e13c7c9a6557674ff460346d992880ea6baff5e | |
| parent | Modify mdstat parsing for volumes with the bitmap (diff) | |
| download | mdadm-b554ab5c9bba537b4a282b3863ead6b3b52dd2e1.tar.xz mdadm-b554ab5c9bba537b4a282b3863ead6b3b52dd2e1.zip | |
Enable bitmap support for external metadata
The patch enables the implementation of a write-intent bitmap for external
metadata.
Configuration of the internal bitmaps for non-native metadata requires the
extension in superswitch to perform an additional sysfs setup before the
array is activated.
Signed-off-by: Jakub Radtke <jakub.radtke@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
| -rw-r--r-- | Assemble.c | 7 | ||||
| -rw-r--r-- | Create.c | 12 | ||||
| -rw-r--r-- | mdadm.h | 3 |
3 files changed, 22 insertions, 0 deletions
@@ -2094,6 +2094,13 @@ int assemble_container_content(struct supertype *st, int mdfd, } } + /* + * Before activating the array, perform extra steps required + * to configure the internal write-intent bitmap. + */ + if (content->consistency_policy == CONSISTENCY_POLICY_BITMAP && + st->ss->set_bitmap) + st->ss->set_bitmap(st, content); if (start_reshape) { int spare = content->array.raid_disks + expansion; @@ -989,6 +989,18 @@ int Create(struct supertype *st, char *mddev, st->ss->free_super(st); goto abort_locked; } + /* + * Before activating the array, perform extra steps + * required to configure the internal write-intent + * bitmap. + */ + if (info_new.consistency_policy == + CONSISTENCY_POLICY_BITMAP && + st->ss->set_bitmap && + st->ss->set_bitmap(st, &info)) { + st->ss->free_super(st); + goto abort_locked; + } /* update parent container uuid */ if (me) { @@ -1007,6 +1007,9 @@ extern struct superswitch { int (*add_internal_bitmap)(struct supertype *st, int *chunkp, int delay, int write_behind, unsigned long long size, int may_change, int major); + /* Perform additional setup required to activate a bitmap. + */ + int (*set_bitmap)(struct supertype *st, struct mdinfo *info); /* Seek 'fd' to start of write-intent-bitmap. Must be an * md-native format bitmap */ |