dm raid: check constructor arguments for invalid raid level/argument combinations

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Reject invalid flag combinations to avoid potential data corruption or
failing raid set construction:

 - add definitions for constructor flag combinations and invalid flags
   per level

 - add bool test functions for the various raid types
   (also will be used by future reshaping enhancements)

 - introduce rs_check_for_invalid_flags() and _invalid_flags()
   to perform the validity checks

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 2016-05-19 18:49:27 +02:00 • committed by Mike Snitzer

parent 702108d194

commit f090279eaf

1 changed files with 130 additions and 1 deletions

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drivers/md/dm-raid.c

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