dm raid: add reshaping support to the target

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Add bool functions rs_is_recovering and rs_is_reshaping()
to test for ongoing recovery/reshaping respectively in order
to reject respective requests on ongoing ones.

Remove ctr array size check, because ti->len and array
sectors will differ during disk addition/removal reshape.

Use __is_raid10_near() rather than type string compare.

Introduce rs_check_reshape() and rs_start_reshape(),
use the former in the ctr to reject bogus rehsape requests
and the latter in preresume to actually start a reshape.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

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This commit is contained in:

Heinz Mauelshagen

2016-06-13 17:55:14 +02:00

committed by Mike Snitzer

parent 40ba37e564

commit 9dbd1aa3a8

1 changed files with 447 additions and 58 deletions

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drivers/md/dm-raid.c

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