diff options
| author | Brian Behlendorf <[email protected]> | 2023-10-24 11:00:07 -0700 |
|---|---|---|
| committer | GitHub <[email protected]> | 2023-10-24 11:00:07 -0700 |
| commit | 07345ac2524754cfd3e020298d16d9fb341f028b (patch) | |
| tree | df8b8d0ac79b33fd597b637842ade5581af3f461 /include/sys/fs | |
| parent | e57909265b4352832d69f5107bac7e56d6a8fbd2 (diff) | |
Add prefetch property
ZFS prefetch is currently governed by the zfs_prefetch_disable
tunable. However, this is a module-wide settings - if a specific
dataset benefits from prefetch, while others have issue with it,
an optimal solution does not exists.
This commit introduce the "prefetch" tri-state property, which enable
granular control (at dataset/volume level) for prefetching.
This patch does not remove the zfs_prefetch_disable, which remains
a system-wide switch for enable/disable prefetch. However, to avoid
duplication, it would be preferable to deprecate and then remove
the module tunable.
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: Alexander Motin <[email protected]>
Reviewed-by: Ameer Hamza <[email protected]>
Signed-off-by: Gionatan Danti <[email protected]>
Co-authored-by: Gionatan Danti <[email protected]>
Closes #15237
Closes #15436
Diffstat (limited to 'include/sys/fs')
| -rw-r--r-- | include/sys/fs/zfs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/sys/fs/zfs.h b/include/sys/fs/zfs.h index bc940e8a7..9d7eca978 100644 --- a/include/sys/fs/zfs.h +++ b/include/sys/fs/zfs.h @@ -191,6 +191,7 @@ typedef enum { ZFS_PROP_REDACTED, ZFS_PROP_REDACT_SNAPS, ZFS_PROP_SNAPSHOTS_CHANGED, + ZFS_PROP_PREFETCH, ZFS_NUM_PROPS } zfs_prop_t; @@ -543,6 +544,12 @@ typedef enum zfs_key_location { ZFS_KEYLOCATION_LOCATIONS } zfs_keylocation_t; +typedef enum { + ZFS_PREFETCH_NONE = 0, + ZFS_PREFETCH_METADATA = 1, + ZFS_PREFETCH_ALL = 2 +} zfs_prefetch_type_t; + #define DEFAULT_PBKDF2_ITERATIONS 350000 #define MIN_PBKDF2_ITERATIONS 100000 |