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authorLinus Torvalds <torvalds@linux-foundation.org>2025-08-04 08:58:53 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2025-08-04 08:58:53 -0700
commitd632ab86aff2cef21f794e337a8e7f2320ac3973 (patch)
treee1873c8aa6df9e64e537c726692dada3c2881d5c /Documentation/admin-guide/device-mapper
parent69917dbfb67e5e7869b67425e2c799aea4d00874 (diff)
parent55a0fbd2ac3fe8f61a30ea697b2eb3034f6778c8 (diff)
Merge tag 'for-6.17/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dmHEADmaster
Pull device mapper updates from Mikulas Patocka: - fix checking for request-based stackable devices (dm-table) - fix corrupt_bio_byte setup checks (dm-flakey) - add support for resync w/o metadata devices (dm raid) - small code simplification (dm, dm-mpath, vm-vdo, dm-raid) - remove support for asynchronous hashes (dm-verity) - close smatch warning (dm-zoned-target) - update the documentation and enable inline-crypto passthrough (dm-thin) * tag 'for-6.17/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm: set DM_TARGET_PASSES_CRYPTO feature for dm-thin dm-thin: update the documentation dm-raid: do not include dm-core.h vdo: omit need_resched() before cond_resched() md: dm-zoned-target: Initialize return variable r to avoid uninitialized use dm-verity: remove support for asynchronous hashes dm-mpath: don't print the "loaded" message if registering fails dm-mpath: make dm_unregister_path_selector return void dm: ima: avoid extra calls to strlen() dm: Simplify dm_io_complete() dm: Remove unnecessary return in dm_zone_endio() dm raid: add support for resync w/o metadata devices dm-flakey: Fix corrupt_bio_byte setup checks dm-table: fix checking for rq stackable devices
Diffstat (limited to 'Documentation/admin-guide/device-mapper')
-rw-r--r--Documentation/admin-guide/device-mapper/thin-provisioning.rst16
1 files changed, 8 insertions, 8 deletions
diff --git a/Documentation/admin-guide/device-mapper/thin-provisioning.rst b/Documentation/admin-guide/device-mapper/thin-provisioning.rst
index bafebf79da4b3..b2fa49a5608a5 100644
--- a/Documentation/admin-guide/device-mapper/thin-provisioning.rst
+++ b/Documentation/admin-guide/device-mapper/thin-provisioning.rst
@@ -80,11 +80,11 @@ less sharing than average you'll need a larger-than-average metadata device.
As a guide, we suggest you calculate the number of bytes to use in the
metadata device as 48 * $data_dev_size / $data_block_size but round it up
-to 2MB if the answer is smaller. If you're creating large numbers of
+to 2MiB if the answer is smaller. If you're creating large numbers of
snapshots which are recording large amounts of change, you may find you
need to increase this.
-The largest size supported is 16GB: If the device is larger,
+The largest size supported is 16GiB: If the device is larger,
a warning will be issued and the excess space will not be used.
Reloading a pool table
@@ -107,13 +107,13 @@ Using an existing pool device
$data_block_size gives the smallest unit of disk space that can be
allocated at a time expressed in units of 512-byte sectors.
-$data_block_size must be between 128 (64KB) and 2097152 (1GB) and a
-multiple of 128 (64KB). $data_block_size cannot be changed after the
+$data_block_size must be between 128 (64KiB) and 2097152 (1GiB) and a
+multiple of 128 (64KiB). $data_block_size cannot be changed after the
thin-pool is created. People primarily interested in thin provisioning
-may want to use a value such as 1024 (512KB). People doing lots of
-snapshotting may want a smaller value such as 128 (64KB). If you are
+may want to use a value such as 1024 (512KiB). People doing lots of
+snapshotting may want a smaller value such as 128 (64KiB). If you are
not zeroing newly-allocated data, a larger $data_block_size in the
-region of 256000 (128MB) is suggested.
+region of 262144 (128MiB) is suggested.
$low_water_mark is expressed in blocks of size $data_block_size. If
free space on the data device drops below this level then a dm event
@@ -291,7 +291,7 @@ i) Constructor
error_if_no_space:
Error IOs, instead of queueing, if no space.
- Data block size must be between 64KB (128 sectors) and 1GB
+ Data block size must be between 64KiB (128 sectors) and 1GiB
(2097152 sectors) inclusive.