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authorAmar Tumballi <amar@gluster.com>2011-09-09 09:42:51 +0530
committerVijay Bellur <vijay@gluster.com>2011-09-13 02:10:12 -0700
commit25daa42911d2ff697880ee29c591cac5f2abebed (patch)
tree9555284c052e1e205909e91f578a8b46b522ec56 /xlators/mgmt/glusterd/src/glusterd-store.c
parent17e57f27c714c94dd5d9fa91650f83d069f2f4e4 (diff)
support for de-commissioning a node using 'remove-brick'
to achieve this, we now create volume-file with 'decommissioned-nodes' option in distribute volume, then just perform the rebalance set of operations (with 'force' flag set). now onwards, the 'remove-brick' (with 'start' option) operation tries to migrate data from removed bricks to existing bricks. 'remove-brick' also supports similar options as of replace-brick. * (no options) -> works as 'force', will have the current behavior of remove-brick, ie., no data-migration, volume changes. * start (starts remove-brick with data-migration/draining process, which takes care of migrating data and once complete, will commit the changes to volume file) * pause (stop data migration, but keep the volume file intact with extra options whatever is set) * abort (stop data-migration, and fall back to old configuration) * commit (if volume is stopped, commits the changes to volumefile) * force (stops the data-migration and commits the changes to volume file) Change-Id: I3952bcfbe604a0952e68b6accace7014d5e401d3 BUG: 1952 Reviewed-on: http://review.gluster.com/118 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vijay@gluster.com>
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-store.c')
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-store.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-store.c b/xlators/mgmt/glusterd/src/glusterd-store.c
index 53fdcf484fa..dab075db074 100644
--- a/xlators/mgmt/glusterd/src/glusterd-store.c
+++ b/xlators/mgmt/glusterd/src/glusterd-store.c
@@ -321,6 +321,10 @@ glusterd_store_brickinfo_write (int fd, glusterd_brickinfo_t *brickinfo)
ret = glusterd_store_save_value (fd, GLUSTERD_STORE_KEY_BRICK_RDMA_PORT,
value);
+ snprintf (value, sizeof(value), "%d", brickinfo->decommissioned);
+ ret = glusterd_store_save_value (fd, GLUSTERD_STORE_KEY_BRICK_DECOMMISSIONED,
+ value);
+
out:
gf_log ("", GF_LOG_DEBUG, "Returning %d", ret);
return ret;
@@ -1637,6 +1641,9 @@ glusterd_store_retrieve_bricks (glusterd_volinfo_t *volinfo)
pmap = pmap_registry_get (THIS);
if (pmap->last_alloc <= brickinfo->rdma_port)
pmap->last_alloc = brickinfo->rdma_port + 1;
+ } else if (!strncmp (key, GLUSTERD_STORE_KEY_BRICK_DECOMMISSIONED,
+ strlen (GLUSTERD_STORE_KEY_BRICK_DECOMMISSIONED))) {
+ gf_string2int (value, &brickinfo->decommissioned);
} else {
gf_log ("", GF_LOG_ERROR, "Unknown key: %s",
key);