diff options
author | vmallika <vmallika@redhat.com> | 2015-03-18 23:17:23 +0530 |
---|---|---|
committer | Vijay Bellur <vbellur@redhat.com> | 2015-03-18 18:24:12 -0700 |
commit | 3e18f093974c85ac92a4c48f0cd13aa9ff9c5cac (patch) | |
tree | 6bbdd814492a3e7dcf6e9a06f49a373926f970dd /xlators/features/quota/src/quotad-aggregator.c | |
parent | fa50fcb6dddf4d7d0094c26cee802fd942f62727 (diff) |
features/quota : Introducing inode quota
==========================================================================
Inode quota
==========================================================================
= Currently, the only way to retrieve the number of files/objects in a =
= directory or volume is to do a crawl of the entire directory/volume. =
= This is expensive and is not scalable. =
= =
= The proposed mechanism will provide an easier alternative to determine =
= the count of files/objects in a directory or volume. =
= =
= The new mechanism proposes to store count of objects/files as part of =
= an extended attribute of a directory. Each directory's extended =
= attribute value will indicate the number of files/objects present =
= in a tree with the directory being considered as the root of the tree. =
= =
= The count value can be accessed by performing a getxattr(). =
= Cluster translators like afr, dht and stripe will perform aggregation =
= of count values from various bricks when getxattr() happens on the key =
= associated with file/object count. =
A new interface is introduced:
------------------------------
limit-objects : limit the number of inodes at directory level
list-objects : list the directories where the limit is set
remove-objects : remove the limit from the directory
==========================================================================
CLI COMMAND:
gluster volume quota <volname> limit-objects <path> <number> [<percent>]
* <number> is a hard-limit for number of objects limitation for path "<path>"
If hard-limit is exceeded, creation of file/directory is no longer
permitted.
* <percent> is a soft-limit for number of objects creation for path "<path>"
If soft-limit is exceeded, a warning is issued for each creation.
CLI COMMAND:
gluster volume quota <volname> remove-objects [path]
==========================================================================
CLI COMMAND:
gluster volume quota <volname> list-objects [path] ...
Sample output:
------------------
Path Hard-limit Soft-limit Used Available
Soft-limit exceeded?
Hard-limit exceeded?
------------------------------------------------------------------------
--------------------------------------
/dir 10 80% 10 0
Yes
Yes
==========================================================================
[root@snapshot-28 dir]# ls
a b file11 file12 file13 file14 file15 file16 file17
[root@snapshot-28 dir]# touch a1
touch: cannot touch `a1': Disk quota exceeded
* Nine files are created in directory "dir" and directory is included in
* the
count too. Hence the limit "10" is reached and further file creation
fails
==========================================================================
Note: We have also done some re-factoring in cli for volume name
validation. New function cli_validate_volname is created
==========================================================================
Change-Id: I1823497de4f790a2a20ebb1770293472ea33ee2b
BUG: 1190108
Signed-off-by: Sachin Pandit <spandit@redhat.com>
Signed-off-by: vmallika <vmallika@redhat.com>
Reviewed-on: http://review.gluster.org/9769
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'xlators/features/quota/src/quotad-aggregator.c')
-rw-r--r-- | xlators/features/quota/src/quotad-aggregator.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/xlators/features/quota/src/quotad-aggregator.c b/xlators/features/quota/src/quotad-aggregator.c index f34bdbddd45..0abe4e6fc80 100644 --- a/xlators/features/quota/src/quotad-aggregator.c +++ b/xlators/features/quota/src/quotad-aggregator.c @@ -126,16 +126,29 @@ int quotad_aggregator_getlimit_cbk (xlator_t *this, call_frame_t *frame, void *lookup_rsp) { - gfs3_lookup_rsp *rsp = lookup_rsp; + gfs3_lookup_rsp *rsp = lookup_rsp; gf_cli_rsp cli_rsp = {0,}; - dict_t *xdata = NULL; - int ret = -1; + dict_t *xdata = NULL; + quotad_aggregator_state_t *state = NULL; + int ret = -1; + int type = 0; GF_PROTOCOL_DICT_UNSERIALIZE (frame->this, xdata, (rsp->xdata.xdata_val), (rsp->xdata.xdata_len), rsp->op_ret, rsp->op_errno, out); + if (xdata) { + state = frame->root->state; + ret = dict_get_int32 (state->xdata, "type", &type); + if (ret < 0) + goto out; + + ret = dict_set_int32 (xdata, "type", type); + if (ret < 0) + goto out; + } + ret = 0; out: rsp->op_ret = ret; @@ -215,10 +228,18 @@ quotad_aggregator_getlimit (rpcsvc_request_t *req) } state = frame->root->state; state->xdata = dict; + ret = dict_set_int32 (state->xdata, QUOTA_LIMIT_KEY, 42); if (ret) goto err; + ret = dict_set_int32 (state->xdata, QUOTA_LIMIT_OBJECTS_KEY, 42); + if (ret) { + gf_log (this->name, GF_LOG_ERROR, "Failed to set " + "QUOTA_LIMIT_OBJECTS_KEY"); + goto err; + } + ret = dict_set_int32 (state->xdata, QUOTA_SIZE_KEY, 42); if (ret) goto err; |