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/quota.h | |
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/quota.h')
-rw-r--r-- | xlators/features/quota/src/quota.h | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/xlators/features/quota/src/quota.h b/xlators/features/quota/src/quota.h index ac08a040d8a..c61c974e352 100644 --- a/xlators/features/quota/src/quota.h +++ b/xlators/features/quota/src/quota.h @@ -25,7 +25,6 @@ #include "logging.h" #include "dict.h" #include "stack.h" -#include "common-utils.h" #include "event.h" #include "globals.h" #include "rpcsvc.h" @@ -36,6 +35,7 @@ #include "xdr-generic.h" #include "compat-errno.h" #include "protocol-common.h" +#include "quota-common-utils.h" #define DIRTY "dirty" #define SIZE "size" @@ -169,6 +169,10 @@ struct quota_inode_ctx { int64_t size; int64_t hard_lim; int64_t soft_lim; + int64_t file_count; + int64_t dir_count; + int64_t object_hard_lim; + int64_t object_soft_lim; struct iatt buf; struct list_head parents; struct timeval tv; @@ -178,12 +182,6 @@ struct quota_inode_ctx { }; typedef struct quota_inode_ctx quota_inode_ctx_t; -struct quota_limit { - int64_t hard_lim; - int64_t soft_lim_percent; -} __attribute__ ((packed)); -typedef struct quota_limit quota_limit_t; - typedef void (*quota_ancestry_built_t) (struct list_head *parents, inode_t *inode, int32_t op_ret, int32_t op_errno, void *data); @@ -210,7 +208,8 @@ struct quota_local { uuid_t common_ancestor; /* Used by quota_rename */ call_stub_t *stub; struct iobref *iobref; - quota_limit_t limit; + quota_limits_t limit; + quota_limits_t object_limit; int64_t space_available; quota_ancestry_built_t ancestry_cbk; void *ancestry_data; @@ -261,4 +260,15 @@ int quota_fill_inodectx (xlator_t *this, inode_t *inode, dict_t *dict, loc_t *loc, struct iatt *buf, int32_t *op_errno); +int32_t +quota_check_size_limit (call_frame_t *frame, quota_inode_ctx_t *ctx, + quota_priv_t *priv, inode_t *_inode, xlator_t *this, + int32_t *op_errno, int just_validated, int64_t delta, + quota_local_t *local, gf_boolean_t *skip_check); + +int32_t +quota_check_object_limit (call_frame_t *frame, quota_inode_ctx_t *ctx, + quota_priv_t *priv, inode_t *_inode, xlator_t *this, + int32_t *op_errno, int just_validated, + quota_local_t *local, gf_boolean_t *skip_check); #endif |