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authorMike Snitzer <snitzer@redhat.com>2012-07-27 15:08:01 +0100
committerAlasdair G Kergon <agk@redhat.com>2012-07-27 15:08:01 +0100
commiteb850de608cc22e0199b3797cd5c0076bae6cda0 (patch)
tree60cf311ac60af6fc5cae3b2cacca19ab8a74e7aa /Documentation/device-mapper/striped.txt
parent542f90381422676544382d4071ba44a2de90a0c1 (diff)
downloadop-kernel-dev-eb850de608cc22e0199b3797cd5c0076bae6cda0.zip
op-kernel-dev-eb850de608cc22e0199b3797cd5c0076bae6cda0.tar.gz
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/striped.txt')
-rw-r--r--Documentation/device-mapper/striped.txt4
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/device-mapper/striped.txt b/Documentation/device-mapper/striped.txt
index 953fe1d..45f3b91 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.
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