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Pool allocation classes

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Allocation Classes add the ability to have allocation classes in a
pool that are dedicated to serving specific block categories, such
as DDT data, metadata, and small file blocks. A pool can opt-in to
this feature by adding a 'special' or 'dedup' top-level VDEV.

Reviewed by: Pavel Zakharov <pavel.zakharov@delphix.com>
Reviewed-by: Richard Laager <rlaager@wiktel.com>
Reviewed-by: Alek Pinchuk <apinchuk@datto.com>
Reviewed-by: Håkan Johansson <f96hajo@chalmers.se>
Reviewed-by: Andreas Dilger <andreas.dilger@chamcloud.com>
Reviewed-by: DHE <git@dehacked.net>
Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Gregor Kopka <gregor@kopka.net>
Reviewed-by: Kash Pande <kash@tripleback.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Signed-off-by: Don Brady <don.brady@delphix.com>
Closes #5182
This commit is contained in:
Don Brady
2018-09-05 19:33:36 -06:00
committed by Brian Behlendorf
parent cfa37548eb
commit cc99f275a2
57 changed files with 2326 additions and 282 deletions
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module/zcommon/zfs_prop.c
+3
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@@ -538,6 +538,9 @@ zfs_prop_init(void)
zprop_register_number(ZFS_PROP_RECORDSIZE, "recordsize",
SPA_OLD_MAXBLOCKSIZE, PROP_INHERIT,
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");
/* hidden properties */
zprop_register_hidden(ZFS_PROP_NUMCLONES, "numclones", PROP_TYPE_NUMBER,