vdev: expose zfs_vdev_max_ms_shift as a module parameter
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de> Reviewed-by: Alexander Motin <mav@FreeBSD.org> Signed-off-by: Rob Norris <rob.norris@klarasystems.com> Sponsored-by: Klara, Inc. Sponsored-by: Seagate Technology LLC Closes #14719
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@ -357,7 +357,10 @@ and the allocation can't actually be satisfied
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When a vdev is added, target this number of metaslabs per top-level vdev.
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.
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.It Sy zfs_vdev_default_ms_shift Ns = Ns Sy 29 Po 512 MiB Pc Pq uint
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Default limit for metaslab size.
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Default lower limit for metaslab size.
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.
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.It Sy zfs_vdev_max_ms_shift Ns = Ns Sy 34 Po 16 GiB Pc Pq uint
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Default upper limit for metaslab size.
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.
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.It Sy zfs_vdev_max_auto_ashift Ns = Ns Sy 14 Pq uint
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Maximum ashift used when optimizing for logical \[->] physical sector size on
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@ -96,7 +96,7 @@ static uint_t zfs_vdev_ms_count_limit = 1ULL << 17;
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static uint_t zfs_vdev_default_ms_shift = 29;
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/* upper limit for metaslab size (16G) */
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static const uint_t zfs_vdev_max_ms_shift = 34;
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static uint_t zfs_vdev_max_ms_shift = 34;
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int vdev_validate_skip = B_FALSE;
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@ -6288,7 +6288,10 @@ ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, default_ms_count, UINT, ZMOD_RW,
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"Target number of metaslabs per top-level vdev");
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ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, default_ms_shift, UINT, ZMOD_RW,
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"Default limit for metaslab size");
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"Default lower limit for metaslab size");
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ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, max_ms_shift, UINT, ZMOD_RW,
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"Default upper limit for metaslab size");
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ZFS_MODULE_PARAM(zfs_vdev, zfs_vdev_, min_ms_count, UINT, ZMOD_RW,
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"Minimum number of metaslabs per top-level vdev");
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