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Add support for user/group dnode accounting & quota

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This patch tracks dnode usage for each user/group in the
DMU_USER/GROUPUSED_OBJECT ZAPs. ZAP entries dedicated to dnode
accounting have the key prefixed with "obj-" followed by the UID/GID
in string format (as done for the block accounting).
A new SPA feature has been added for dnode accounting as well as
a new ZPL version. The SPA feature must be enabled in the pool
before upgrading the zfs filesystem. During the zfs version upgrade,
a "quotacheck" will be executed by marking all dnode as dirty.

ZoL-bug-id: https://github.com/zfsonlinux/zfs/issues/3500

Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Johann Lombardi <johann.lombardi@intel.com>
This commit is contained in:
Jinshan Xiong
2016-10-04 11:46:10 -07:00
committed by Brian Behlendorf
parent af322debaa
commit 1de321e626
43 changed files with 1119 additions and 98 deletions
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module/zfs/dnode_sync.c
+5
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@@ -570,12 +570,17 @@ dnode_sync(dnode_t *dn, dmu_tx_t *tx)
dn->dn_oldused = DN_USED_BYTES(dn->dn_phys);
dn->dn_oldflags = dn->dn_phys->dn_flags;
dn->dn_phys->dn_flags |= DNODE_FLAG_USERUSED_ACCOUNTED;
if (dmu_objset_userobjused_enabled(dn->dn_objset))
dn->dn_phys->dn_flags |=
DNODE_FLAG_USEROBJUSED_ACCOUNTED;
mutex_exit(&dn->dn_mtx);
dmu_objset_userquota_get_ids(dn, B_FALSE, tx);
} else {
/* Once we account for it, we should always account for it. */
ASSERT(!(dn->dn_phys->dn_flags &
DNODE_FLAG_USERUSED_ACCOUNTED));
ASSERT(!(dn->dn_phys->dn_flags &
DNODE_FLAG_USEROBJUSED_ACCOUNTED));
}
mutex_enter(&dn->dn_mtx);