[lvm-devel] [PATCH 11/23] Replicator: add find_replicator_vgs
Zdenek Kabelac
zkabelac at redhat.com
Wed Apr 28 12:34:26 UTC 2010
Adding function find_replicator_vgs() to find all needed
VGs for replicator.
This function is later called before taking lock_vol().
Signed-off-by: Zdenek Kabelac <zkabelac at redhat.com>
---
lib/metadata/metadata-exported.h | 2 ++
lib/metadata/replicator_manip.c | 32 ++++++++++++++++++++++++++++++++
2 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/lib/metadata/metadata-exported.h b/lib/metadata/metadata-exported.h
index c5a31d6..4c70626 100644
--- a/lib/metadata/metadata-exported.h
+++ b/lib/metadata/metadata-exported.h
@@ -809,6 +809,8 @@ struct cmd_vg *cmd_vg_lookup(struct dm_list *cmd_vgs,
int cmd_vg_read(struct cmd_context *cmd, struct dm_list *cmd_vgs);
void cmd_vg_release(struct dm_list *cmd_vgs);
+int find_replicator_vgs(struct logical_volume *lv);
+
struct logical_volume *find_pvmove_lv(struct volume_group *vg,
struct device *dev, uint32_t lv_type);
struct logical_volume *find_pvmove_lv_from_pvname(struct cmd_context *cmd,
diff --git a/lib/metadata/replicator_manip.c b/lib/metadata/replicator_manip.c
index 82ce23c..abd34b3 100644
--- a/lib/metadata/replicator_manip.c
+++ b/lib/metadata/replicator_manip.c
@@ -602,3 +602,35 @@ void cmd_vg_release(struct dm_list *cmd_vgs)
cvl->vg = NULL;
}
}
+
+/**
+ * Find all needed remote VGs for processing given LV.
+ * Missing VGs are added to VG's vgs list.
+ */
+int find_replicator_vgs(struct logical_volume *lv)
+{
+ struct replicator_site *rsite;
+ int ret = 1;
+
+ if (!lv_is_replicator_dev(lv))
+ return 1;
+
+ dm_list_iterate_items(rsite, &first_seg(lv)->replicator->rsites) {
+ if (!rsite->vg_name || !lv->vg->cmd_vgs ||
+ cmd_vg_lookup(lv->vg->cmd_vgs, rsite->vg_name, NULL))
+ continue;
+ ret = 0;
+ /* Using cmd memory pool for cmd_vg list allocation */
+ if (!cmd_vg_add(lv->vg->cmd->mem, lv->vg->cmd_vgs,
+ rsite->vg_name, NULL, 0)) {
+ lv->vg->cmd_missing_vgs = 0; /* do not retry */
+ stack;
+ break;
+ }
+
+ log_debug("VG: %s added as missing.", rsite->vg_name);
+ lv->vg->cmd_missing_vgs++;
+ }
+
+ return ret;
+}
--
1.7.0.1
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