From 3e18f093974c85ac92a4c48f0cd13aa9ff9c5cac Mon Sep 17 00:00:00 2001 From: vmallika Date: Wed, 18 Mar 2015 23:17:23 +0530 Subject: 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 limit-objects [] * is a hard-limit for number of objects limitation for path "" If hard-limit is exceeded, creation of file/directory is no longer permitted. * is a soft-limit for number of objects creation for path "" If soft-limit is exceeded, a warning is issued for each creation. CLI COMMAND: gluster volume quota remove-objects [path] ========================================================================== CLI COMMAND: gluster volume quota 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 Signed-off-by: vmallika Reviewed-on: http://review.gluster.org/9769 Tested-by: Gluster Build System Reviewed-by: Vijay Bellur --- xlators/mgmt/glusterd/src/glusterd-utils.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'xlators/mgmt/glusterd/src/glusterd-utils.c') diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c index f98c3b5102c..1cd9a7c4741 100644 --- a/xlators/mgmt/glusterd/src/glusterd-utils.c +++ b/xlators/mgmt/glusterd/src/glusterd-utils.c @@ -8344,7 +8344,9 @@ glusterd_volume_quota_copy_to_op_ctx_dict (dict_t *dict, dict_t *rsp_dict) } if ((type != GF_QUOTA_OPTION_TYPE_LIMIT_USAGE) && - (type != GF_QUOTA_OPTION_TYPE_REMOVE)) { + (type != GF_QUOTA_OPTION_TYPE_LIMIT_OBJECTS) && + (type != GF_QUOTA_OPTION_TYPE_REMOVE) && + (type != GF_QUOTA_OPTION_TYPE_REMOVE_OBJECTS)) { dict_copy (rsp_dict, dict); ret = 0; goto out; @@ -9183,7 +9185,9 @@ glusterd_validate_and_set_gfid (dict_t *op_ctx, dict_t *req_dict, } if ((op_code != GF_QUOTA_OPTION_TYPE_LIMIT_USAGE) && - (op_code != GF_QUOTA_OPTION_TYPE_REMOVE)) { + (op_code != GF_QUOTA_OPTION_TYPE_LIMIT_OBJECTS) && + (op_code != GF_QUOTA_OPTION_TYPE_REMOVE) && + (op_code != GF_QUOTA_OPTION_TYPE_REMOVE_OBJECTS)) { ret = 0; goto out; } -- cgit