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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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include/sys/dmu_objset.h
+21
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@@ -56,6 +56,7 @@ struct dmu_tx;
(arc_buf_size(buf) > OBJSET_OLD_PHYS_SIZE)
#define OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0)
#define OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE (1ULL<<1)
typedef struct objset_phys {
dnode_phys_t os_meta_dnode;
@@ -68,6 +69,8 @@ typedef struct objset_phys {
dnode_phys_t os_groupused_dnode;
} objset_phys_t;
typedef int (*dmu_objset_upgrade_cb_t)(objset_t *);
struct objset {
/* Immutable: */
struct dsl_dataset *os_dsl_dataset;
@@ -125,6 +128,13 @@ struct objset {
kmutex_t os_user_ptr_lock;
void *os_user_ptr;
sa_os_t *os_sa;
/* kernel thread to upgrade this dataset */
kmutex_t os_upgrade_lock;
taskqid_t os_upgrade_id;
dmu_objset_upgrade_cb_t os_upgrade_cb;
boolean_t os_upgrade_exit;
int os_upgrade_status;
};
#define DMU_META_OBJSET 0
@@ -173,6 +183,17 @@ void dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx);
boolean_t dmu_objset_userused_enabled(objset_t *os);
int dmu_objset_userspace_upgrade(objset_t *os);
boolean_t dmu_objset_userspace_present(objset_t *os);
boolean_t dmu_objset_userobjused_enabled(objset_t *os);
void dmu_objset_userobjspace_upgrade(objset_t *os);
boolean_t dmu_objset_userobjspace_present(objset_t *os);
static inline boolean_t dmu_objset_userobjspace_upgradable(objset_t *os)
{
return (dmu_objset_type(os) == DMU_OST_ZFS &&
dmu_objset_userobjused_enabled(os) &&
!dmu_objset_userobjspace_present(os));
}
int dmu_fsname(const char *snapname, char *buf);
void dmu_objset_evict_done(objset_t *os);