diff options
| author | Brian Behlendorf <[email protected]> | 2023-10-24 11:00:07 -0700 |
|---|---|---|
| committer | Tony Hutter <[email protected]> | 2024-04-30 10:01:15 -0700 |
| commit | 61f3638a3463b58168b9c2b0d1f8605fde1349d9 (patch) | |
| tree | 30d5c066d74763368c148e76b2a79aa8fe5efc6e /module/zcommon | |
| parent | 706307445e66b63f6f4fd828dc331bb0a010c59f (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 'module/zcommon')
| -rw-r--r-- | module/zcommon/zfs_prop.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/module/zcommon/zfs_prop.c b/module/zcommon/zfs_prop.c index 3db6fd13f..29764674a 100644 --- a/module/zcommon/zfs_prop.c +++ b/module/zcommon/zfs_prop.c @@ -345,6 +345,13 @@ zfs_prop_init(void) { NULL } }; + static const zprop_index_t prefetch_table[] = { + { "none", ZFS_PREFETCH_NONE }, + { "metadata", ZFS_PREFETCH_METADATA }, + { "all", ZFS_PREFETCH_ALL }, + { NULL } + }; + static const zprop_index_t sync_table[] = { { "standard", ZFS_SYNC_STANDARD }, { "always", ZFS_SYNC_ALWAYS }, @@ -453,6 +460,10 @@ zfs_prop_init(void) ZFS_CACHE_ALL, PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME, "all | none | metadata", "SECONDARYCACHE", cache_table, sfeatures); + zprop_register_index(ZFS_PROP_PREFETCH, "prefetch", + ZFS_PREFETCH_ALL, PROP_INHERIT, + ZFS_TYPE_FILESYSTEM | ZFS_TYPE_SNAPSHOT | ZFS_TYPE_VOLUME, + "none | metadata | all", "PREFETCH", prefetch_table, sfeatures); zprop_register_index(ZFS_PROP_LOGBIAS, "logbias", ZFS_LOGBIAS_LATENCY, PROP_INHERIT, ZFS_TYPE_FILESYSTEM | ZFS_TYPE_VOLUME, "latency | throughput", "LOGBIAS", logbias_table, sfeatures); |