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[PATCH] md: support adding new devices to md arrays via sysfs

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Writing major:minor to md/new_dev will bind that device to the array.

Signed-off-by: Neil Brown <[email protected]>
Acked-by: Greg KH <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
NeilBrown 2006-01-06 00:21:16 -08:00 • committed by Linus Torvalds
commit 6d7ff7380b
2 changed files with 68 additions and 0 deletions
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8
Documentation/md.txt
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@ -200,6 +200,14 @@ All md devices contain:
This can be written only while the array is being assembled, not
after it is started.
new_dev
This file can be written but not read. The value written should
be a block device number as major:minor. e.g. 8:0
This will cause that device to be attached to the array, if it is
available. It will then appear at md/dev-XXX (depending on the
name of the device) and further configuration is then possible.
As component devices are added to an md array, they appear in the 'md'
directory as new directories named
dev-XXX