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(parent: b84cf26) | patch
dm raid: validate current raid sets redundancy
authorHeinz Mauelshagen <heinzm@redhat.com>
Wed, 13 Dec 2017 16:13:17 +0000 (17:13 +0100)
committerMike Snitzer <snitzer@redhat.com>
Wed, 13 Dec 2017 16:50:52 +0000 (11:50 -0500)
commit53bf5384f9b9e37c628f171366959a38c89779ca
tree5fa79fefd5cd37cebdb9b1ddbf78ac8c48bf4446tree | snapshot
parentb84cf26924cfe405993fc45fa2911cde38f3c3accommit | diff
dm raid: validate current raid sets redundancy

Verifying the current raid sets redundancy based on retrieved
superblock content has to use the superblock's raid level (e.g. raid0),
not the constructor requested one (e.g. raid10).

Using the requested raid level of raid10 lead to a "divide error"
on raid0 which defines data copies divided by to be zero.

Also check for bogus data copies.

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
drivers/md/dm-raid.c diff | blob | history
Domain: System / Kernel;