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| author | Mike Snitzer <snitzer@redhat.com> | 2012-07-27 15:08:01 +0100 |
|---|---|---|
| committer | Alasdair G Kergon <agk@redhat.com> | 2012-07-27 15:08:01 +0100 |
| commit | eb850de608cc22e0199b3797cd5c0076bae6cda0 (patch) | |
| tree | 60cf311ac60af6fc5cae3b2cacca19ab8a74e7aa /Documentation/device-mapper | |
| parent | 542f90381422676544382d4071ba44a2de90a0c1 (diff) | |
| download | linux-eb850de608cc22e0199b3797cd5c0076bae6cda0.tar.bz2 | |
dm stripe: support for non power of 2 chunksize
Support non-power-of-2 chunk sizes with dm striping for proper alignment
of stripe IO on storage that has non-power-of-2 optimal IO sizes (e.g.
RAID6 10+2).
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'Documentation/device-mapper')
| -rw-r--r-- | Documentation/device-mapper/striped.txt | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/device-mapper/striped.txt b/Documentation/device-mapper/striped.txt index 953fe1d68068..45f3b91ea4c3 100644 --- a/Documentation/device-mapper/striped.txt +++ b/Documentation/device-mapper/striped.txt @@ -9,8 +9,8 @@ devices in parallel. Parameters: <num devs> <chunk size> [<dev path> <offset>]+ <num devs>: Number of underlying devices. - <chunk size>: Size of each chunk of data. Must be a power-of-2 and at - least as large as the system's PAGE_SIZE. + <chunk size>: Size of each chunk of data. Must be at least as + large as the system's PAGE_SIZE. <dev path>: Full pathname to the underlying block-device, or a "major:minor" device-number. <offset>: Starting sector within the device. |