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| author | Zdenek Kabelac <zkabelac@redhat.com> | 2016-12-10 19:54:09 +0100 |
|---|---|---|
| committer | Zdenek Kabelac <zkabelac@redhat.com> | 2016-12-11 23:16:16 +0100 |
| commit | 31564834db7610b37f52040fbba89f4c71de4c34 (patch) | |
| tree | fd0622a7d1cf14578d4026cff04ebed3d72ab350 | |
| parent | b9f9ce52ecb0de3b33b1d0e2294a1b13c744e655 (diff) | |
| download | lvm2-31564834db7610b37f52040fbba89f4c71de4c34.tar.gz | |
mirror: add prepare_mirror_log
Function prepares new mirror log LV in-sync optionaly.
This is useful to have such device ready when converting
raid1 to mirror.
| -rw-r--r-- | WHATS_NEW | 1 | ||||
| -rw-r--r-- | lib/metadata/metadata-exported.h | 4 | ||||
| -rw-r--r-- | lib/metadata/mirror.c | 43 |
3 files changed, 48 insertions, 0 deletions
@@ -1,5 +1,6 @@ Version 2.02.169 - ===================================== + Add internal function for separate mirror log preparation. Fix segfault in lvmetad from missing NULL in daemon_reply_simple. Simplify internal _info_run() and use _setup_task_run() for mknod. Better API for internal function _setup_task_run. diff --git a/lib/metadata/metadata-exported.h b/lib/metadata/metadata-exported.h index cdd4984c1..4bf466b1f 100644 --- a/lib/metadata/metadata-exported.h +++ b/lib/metadata/metadata-exported.h @@ -1157,6 +1157,10 @@ struct logical_volume *detach_mirror_log(struct lv_segment *seg); int attach_mirror_log(struct lv_segment *seg, struct logical_volume *lv); int remove_mirror_log(struct cmd_context *cmd, struct logical_volume *lv, struct dm_list *removable_pvs, int force); +struct logical_volume *prepare_mirror_log(struct logical_volume *lv, + int in_sync, uint32_t region_size, + struct dm_list *allocatable_pvs, + alloc_policy_t alloc); int add_mirror_log(struct cmd_context *cmd, struct logical_volume *lv, uint32_t log_count, uint32_t region_size, struct dm_list *allocatable_pvs, alloc_policy_t alloc); diff --git a/lib/metadata/mirror.c b/lib/metadata/mirror.c index e84916ee4..73b111071 100644 --- a/lib/metadata/mirror.c +++ b/lib/metadata/mirror.c @@ -1912,6 +1912,49 @@ int attach_mirror_log(struct lv_segment *seg, struct logical_volume *log_lv) return add_seg_to_segs_using_this_lv(log_lv, seg); } +/* Prepare disk mirror log for raid1->mirror conversion */ +struct logical_volume *prepare_mirror_log(struct logical_volume *lv, + int in_sync, uint32_t region_size, + struct dm_list *allocatable_pvs, + alloc_policy_t alloc) +{ + struct cmd_context *cmd = lv->vg->cmd; + const struct segment_type *segtype; + struct dm_list *parallel_areas; + struct alloc_handle *ah; + struct logical_volume *log_lv; + + if (!(parallel_areas = build_parallel_areas_from_lv(lv, 0, 0))) + return_NULL; + + if (!(segtype = get_segtype_from_string(cmd, SEG_TYPE_NAME_MIRROR))) + return_NULL; + + /* Allocate destination extents */ + if (!(ah = allocate_extents(lv->vg, NULL, segtype, + 0, 0, 1, region_size, + lv->le_count, allocatable_pvs, + alloc, 0, parallel_areas))) { + log_error("Unable to allocate extents for mirror log."); + return NULL; + } + + if (!(log_lv = _create_mirror_log(lv, ah, alloc, lv->name, "_mlog"))) { + log_error("Failed to create mirror log."); + goto out; + } + + if (!_init_mirror_log(cmd, log_lv, in_sync, &lv->tags, 1)) { + log_error("Failed to initialise mirror log."); + log_lv = NULL; + goto out; + } +out: + alloc_destroy(ah); + + return log_lv; +} + int add_mirror_log(struct cmd_context *cmd, struct logical_volume *lv, uint32_t log_count, uint32_t region_size, struct dm_list *allocatable_pvs, alloc_policy_t alloc) |