61f3638a34
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 <behlendorf1@llnl.gov> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Ameer Hamza <ahamza@ixsystems.com> Signed-off-by: Gionatan Danti <g.danti@assyoma.it> Co-authored-by: Gionatan Danti <g.danti@assyoma.it> Closes #15237 Closes #15436 |
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