diff options
| author | Krutika Dhananjay <kdhananj@redhat.com> | 2014-11-21 11:47:23 +0530 |
|---|---|---|
| committer | Vijay Bellur <vbellur@redhat.com> | 2015-03-19 10:59:31 -0700 |
| commit | 6f389fbb812b384bdd9bf4a20e86930505531996 (patch) | |
| tree | 7304eeab269d1a0226274cf439fb4f6c49bfcec9 /xlators/mgmt/glusterd/src/glusterd-volgen.c | |
| parent | 32ed7aa5ad7049a9d85c795f997336c0366151a8 (diff) | |
features/shard: Introducing sharding translator
Based on the high-level design by Anand V. Avati which can be found @
https://gist.github.com/avati/af04f1030dcf52e16535#sharding-xlator-stripe-20
Still to-do:
* complete implementation of inode write fops - [f]truncate,
zerofill, fallocate, discard
* introduce transaction mechanism in inode write fops
* complete readv
* Handle open with O_TRUNC
* Handle unlinking of all shards during unlink/rename
* Compute total ia_size and ia_blocks in lookup, readdirp, etc
* wind fsync/flush on all shards
Note: Most of the items above are related. Once we come up
with a clean way to determine the last shard/shard count for
a file/file size and the mgmt of sparse regions of the file,
implementing them becomes trivial.
Change-Id: Id871379b53a4a916e4baa2e06f197dd8c0043b0f
BUG: 1200082
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/9841
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/mgmt/glusterd/src/glusterd-volgen.c')
| -rw-r--r-- | xlators/mgmt/glusterd/src/glusterd-volgen.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/xlators/mgmt/glusterd/src/glusterd-volgen.c b/xlators/mgmt/glusterd/src/glusterd-volgen.c index 6f6d1095edb..b098a297132 100644 --- a/xlators/mgmt/glusterd/src/glusterd-volgen.c +++ b/xlators/mgmt/glusterd/src/glusterd-volgen.c @@ -3353,6 +3353,18 @@ client_graph_builder (volgen_graph_t *graph, glusterd_volinfo_t *volinfo, if (ret == -1) goto out; + ret = dict_get_str_boolean (set_dict, "features.shard", _gf_false); + if (ret == -1) + goto out; + + if (ret) { + xl = volgen_graph_add (graph, "features/shard", volname); + if (!xl) { + ret = -1; + goto out; + } + } + /* As of now snapshot volume is read-only. Read-only xlator is loaded * in client graph so that AFR & DHT healing can be done in server. */ @@ -3388,7 +3400,6 @@ client_graph_builder (volgen_graph_t *graph, glusterd_volinfo_t *volinfo, goto out; if (ret) { xl = volgen_graph_add (graph, "encryption/crypt", volname); - if (!xl) { ret = -1; goto out; |