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Increase allowed 'special_small_blocks' maximum value

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There may be circumstances where it's desirable that all blocks
in a specified dataset be stored on the special device.  Relax
the artificial 128K limit and allow the special_small_blocks
property to be set up to 1M.  When blocks >1MB have been enabled
via the zfs_max_recordsize module option, this limit is increased
accordingly.

Reviewed-by: Don Brady <don.brady@delphix.com>
Reviewed-by: Kjeld Schouten <kjeld@schouten-lebbing.nl>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #9131
Closes #9355
This commit is contained in:
Brian Behlendorf
2019-12-03 09:58:03 -08:00
committed by GitHub
parent b3673342c7
commit 624222ae31
4 changed files with 17 additions and 7 deletions
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module/zcommon/zfs_prop.c
+1 -1
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@@ -544,7 +544,7 @@ zfs_prop_init(void)
ZFS_TYPE_FILESYSTEM, "512 to 1M, power of 2", "RECSIZE");
zprop_register_number(ZFS_PROP_SPECIAL_SMALL_BLOCKS,
"special_small_blocks", 0, PROP_INHERIT, ZFS_TYPE_FILESYSTEM,
"zero or 512 to 128K, power of 2", "SPECIAL_SMALL_BLOCKS");
"zero or 512 to 1M, power of 2", "SPECIAL_SMALL_BLOCKS");
/* hidden properties */
zprop_register_hidden(ZFS_PROP_NUMCLONES, "numclones", PROP_TYPE_NUMBER,