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author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-08-04 08:58:53 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-08-04 08:58:53 -0700 |
commit | d632ab86aff2cef21f794e337a8e7f2320ac3973 (patch) | |
tree | e1873c8aa6df9e64e537c726692dada3c2881d5c /Documentation | |
parent | 69917dbfb67e5e7869b67425e2c799aea4d00874 (diff) | |
parent | 55a0fbd2ac3fe8f61a30ea697b2eb3034f6778c8 (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')
-rw-r--r-- | Documentation/admin-guide/device-mapper/thin-provisioning.rst | 16 |
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. |