diff options
| author | Umer Saleem <[email protected]> | 2022-08-03 04:45:30 +0500 |
|---|---|---|
| committer | GitHub <[email protected]> | 2022-08-02 16:45:30 -0700 |
| commit | 9681de4657686d0ed19ca18d578513e74395f00f (patch) | |
| tree | be312549168f938e61fd275b19590a7c8eccb4ae /include/sys/fs | |
| parent | 5ad44a0ce9cb0da43005cd3d899e345617460998 (diff) | |
Add snapshots_changed as property
Make dd_snap_cmtime property persistent across mount and unmount
operations by storing in ZAP and restore the value from ZAP on hold
into dd_snap_cmtime instead of updating it.
Expose dd_snap_cmtime as 'snapshots_changed' property that provides a
mechanism to quickly determine whether snapshot list for dataset has
changed without having to mount a dataset or iterate the snapshot list.
It specifies the time at which a snapshot for a dataset was last
created or deleted. This allows us to be more efficient how often we
query snapshots.
Reviewed-by: Ryan Moeller <[email protected]>
Reviewed-by: Alexander Motin <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Umer Saleem <[email protected]>
Closes #13635
Diffstat (limited to 'include/sys/fs')
| -rw-r--r-- | include/sys/fs/zfs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sys/fs/zfs.h b/include/sys/fs/zfs.h index 237b50362..8cbd0e602 100644 --- a/include/sys/fs/zfs.h +++ b/include/sys/fs/zfs.h @@ -189,6 +189,7 @@ typedef enum { ZFS_PROP_IVSET_GUID, /* not exposed to the user */ ZFS_PROP_REDACTED, ZFS_PROP_REDACT_SNAPS, + ZFS_PROP_SNAPSHOTS_CHANGED, ZFS_NUM_PROPS } zfs_prop_t; |