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authorNasf-Fan <[email protected]>2018-02-14 06:54:54 +0800
committerBrian Behlendorf <[email protected]>2018-02-13 14:54:54 -0800
commit9c5167d19fe02e44ba09c6d0282363c19781b19d (patch)
tree32fd87dc2f943f05f964450c0f54ea3d0d601466 /module/zfs/zfs_log.c
parentc03f04708caecf9a4a4ce2134aaa6a8cabe499c9 (diff)
Project Quota on ZFS
Project quota is a new ZFS system space/object usage accounting and enforcement mechanism. Similar as user/group quota, project quota is another dimension of system quota. It bases on the new object attribute - project ID. Project ID is a numerical value to indicate to which project an object belongs. An object only can belong to one project though you (the object owner or privileged user) can change the object project ID via 'chattr -p' or 'zfs project [-s] -p' explicitly. The object also can inherit the project ID from its parent when created if the parent has the project inherit flag (that can be set via 'chattr +P' or 'zfs project -s [-p]'). By accounting the spaces/objects belong to the same project, we can know how many spaces/objects used by the project. And if we set the upper limit then we can control the spaces/objects that are consumed by such project. It is useful when multiple groups and users cooperate for the same project, or a user/group needs to participate in multiple projects. Support the following commands and functionalities: zfs set projectquota@project zfs set projectobjquota@project zfs get projectquota@project zfs get projectobjquota@project zfs get projectused@project zfs get projectobjused@project zfs projectspace zfs allow projectquota zfs allow projectobjquota zfs allow projectused zfs allow projectobjused zfs unallow projectquota zfs unallow projectobjquota zfs unallow projectused zfs unallow projectobjused chattr +/-P chattr -p project_id lsattr -p This patch also supports tree quota based on the project quota via "zfs project" commands set as following: zfs project [-d|-r] <file|directory ...> zfs project -C [-k] [-r] <file|directory ...> zfs project -c [-0] [-d|-r] [-p id] <file|directory ...> zfs project [-p id] [-r] [-s] <file|directory ...> For "df [-i] $DIR" command, if we set INHERIT (project ID) flag on the $DIR, then the proejct [obj]quota and [obj]used values for the $DIR's project ID will be shown as the total/free (avail) resource. Keep the same behavior as EXT4/XFS does. Reviewed-by: Andreas Dilger <[email protected]> Reviewed-by Ned Bass <[email protected]> Reviewed-by: Matthew Ahrens <[email protected]> Reviewed-by: Brian Behlendorf <[email protected]> Signed-off-by: Fan Yong <[email protected]> TEST_ZIMPORT_POOLS="zol-0.6.1 zol-0.6.2 master" Change-Id: Ib4f0544602e03fb61fd46a849d7ba51a6005693c Closes #6290
Diffstat (limited to 'module/zfs/zfs_log.c')
-rw-r--r--module/zfs/zfs_log.c14
1 files changed, 13 insertions, 1 deletions
diff --git a/module/zfs/zfs_log.c b/module/zfs/zfs_log.c
index 8887f037a..ce7b84927 100644
--- a/module/zfs/zfs_log.c
+++ b/module/zfs/zfs_log.c
@@ -166,8 +166,17 @@ zfs_log_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
XAT0_AV_MODIFIED;
if (XVA_ISSET_REQ(xvap, XAT_CREATETIME))
ZFS_TIME_ENCODE(&xoap->xoa_createtime, crtime);
- if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP))
+ if (XVA_ISSET_REQ(xvap, XAT_AV_SCANSTAMP)) {
+ ASSERT(!XVA_ISSET_REQ(xvap, XAT_PROJID));
+
bcopy(xoap->xoa_av_scanstamp, scanstamp, AV_SCANSTAMP_SZ);
+ } else if (XVA_ISSET_REQ(xvap, XAT_PROJID)) {
+ /*
+ * XAT_PROJID and XAT_AV_SCANSTAMP will never be valid
+ * at the same time, so we can share the same space.
+ */
+ bcopy(&xoap->xoa_projid, scanstamp, sizeof (uint64_t));
+ }
if (XVA_ISSET_REQ(xvap, XAT_REPARSE))
*attrs |= (xoap->xoa_reparse == 0) ? 0 :
XAT0_REPARSE;
@@ -177,6 +186,9 @@ zfs_log_xvattr(lr_attr_t *lrattr, xvattr_t *xvap)
if (XVA_ISSET_REQ(xvap, XAT_SPARSE))
*attrs |= (xoap->xoa_sparse == 0) ? 0 :
XAT0_SPARSE;
+ if (XVA_ISSET_REQ(xvap, XAT_PROJINHERIT))
+ *attrs |= (xoap->xoa_projinherit == 0) ? 0 :
+ XAT0_PROJINHERIT;
}
static void *