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.h | |
| 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.h')
| -rw-r--r-- | xlators/cluster/dht/src/dht-common.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h index e44c947dd..2ccdea747 100644 --- a/xlators/cluster/dht/src/dht-common.h +++ b/xlators/cluster/dht/src/dht-common.h @@ -245,6 +245,7 @@ struct dht_conf { /* to keep track of nodes which are decomissioned */ xlator_t **decommissioned_bricks; + int decommission_in_progress; /* defrag related */ gf_defrag_info_t *defrag; @@ -262,6 +263,12 @@ struct dht_disk_layout { }; typedef struct dht_disk_layout dht_disk_layout_t; +typedef enum { + GF_DHT_MIGRATE_DATA, + GF_DHT_MIGRATE_DATA_EVEN_IF_LINK_EXISTS, + GF_DHT_MIGRATE_HARDLINK, + GF_DHT_MIGRATE_HARDLINK_IN_PROGRESS +} gf_dht_migrate_data_type_t; #define ENTRY_MISSING(op_ret, op_errno) (op_ret == -1 && op_errno == ENOENT) @@ -655,4 +662,10 @@ gf_defrag_stop (gf_defrag_info_t *defrag, dict_t *output); void* gf_defrag_start (void *this); +int32_t +gf_defrag_handle_hardlink (xlator_t *this, loc_t *loc, dict_t *xattrs, + struct iatt *stbuf); +int +dht_migrate_file (xlator_t *this, loc_t *loc, xlator_t *from, xlator_t *to, + int flag); #endif/* _DHT_H */ |