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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/spa.c
+12
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@@ -1167,6 +1167,13 @@ spa_activate(spa_t *spa, int mode)
*/
spa->spa_zvol_taskq = taskq_create("z_zvol", 1, defclsyspri,
1, INT_MAX, 0);
/*
* The taskq to upgrade datasets in this pool. Currently used by
* feature SPA_FEATURE_USEROBJ_ACCOUNTING.
*/
spa->spa_upgrade_taskq = taskq_create("z_upgrade", boot_ncpus,
defclsyspri, 1, INT_MAX, TASKQ_DYNAMIC);
}
/*
@@ -1190,6 +1197,11 @@ spa_deactivate(spa_t *spa)
spa->spa_zvol_taskq = NULL;
}
if (spa->spa_upgrade_taskq) {
taskq_destroy(spa->spa_upgrade_taskq);
spa->spa_upgrade_taskq = NULL;
}
txg_list_destroy(&spa->spa_vdev_txg_list);
list_destroy(&spa->spa_config_dirty_list);