diff options
| author | shishir gowda <shishirng@gluster.com> | 2012-02-17 19:21:07 +0530 |
|---|---|---|
| committer | Vijay Bellur <vijay@gluster.com> | 2012-02-19 04:47:50 -0800 |
| commit | 4a65356275cda45f665dfa99d3712f6fb9087aff (patch) | |
| tree | 43a58dd347e770073d26c13fd54522e3825d957b /xlators/cluster/dht/src/dht-common.c | |
| parent | 6123265556e54891369cc79a72b670a4b23a8a41 (diff) | |
cluster/dht: Support for hardlink rebalance when decommissioning
The support for hardlink rebalance is only available for decommissioning
of a node. this can be triggered in two ways
1. remove-brick start
2. if decommission node value is set in vol file, then a normal rebalance
command
The way we handle it is-
if (nlink > 1)
do
* if src file doesnt have linkto xattr
* mark src's linkto to the dst
* else
* perform a link on the dst
* do a look up
* if nlinks = dst.nlinks
* migrate data
* else
* continue crawling
done
Signed-off-by: shishir gowda <shishirng@gluster.com>
Change-Id: If43b5524b872fd1413e9f7aa7f436cb244e30d8d
BUG: 763844
Reviewed-on: http://review.gluster.com/2737
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Diffstat (limited to 'xlators/cluster/dht/src/dht-common.c')
| -rw-r--r-- | xlators/cluster/dht/src/dht-common.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c index f76dba40fcf..9f364d10c03 100644 --- a/xlators/cluster/dht/src/dht-common.c +++ b/xlators/cluster/dht/src/dht-common.c @@ -2145,7 +2145,7 @@ dht_setxattr (call_frame_t *frame, xlator_t *this, data_t *tmp = NULL; uint32_t dir_spread = 0; char value[4096] = {0,}; - int forced_rebalance = 0; + gf_dht_migrate_data_type_t forced_rebalance = GF_DHT_MIGRATE_DATA; int call_cnt = 0; data_pair_t *trav = NULL; @@ -2214,7 +2214,11 @@ dht_setxattr (call_frame_t *frame, xlator_t *this, (ie, 'target' subvolume given there, etc) */ memcpy (value, tmp->data, tmp->len); if (strcmp (value, "force") == 0) - forced_rebalance = 1; + forced_rebalance = + GF_DHT_MIGRATE_DATA_EVEN_IF_LINK_EXISTS; + + if (conf->decommission_in_progress) + forced_rebalance = GF_DHT_MIGRATE_HARDLINK; local->rebalance.target_node = dht_subvol_get_hashed (this, loc); if (!local->rebalance.target_node) { |