From: Mike Snitzer <snitzer@redhat.com>
Date: Thu, 24 Mar 2011 13:54:31 +0000 (+0000)
Subject: dm mpath: fail message ioctl if specified path is not valid
X-Git-Tag: v2.6.39-rc1~57^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=19040c0bc8efcb767221d8ef7bb9c32ff0586179;p=pandora-kernel.git

dm mpath: fail message ioctl if specified path is not valid

Fail the reinstate_path and fail_path message ioctl if the specified
path is not valid.

The message ioctl would succeed for the 'reinistate_path' and
'fail_path' messages even if action was not taken because the
specified device was not a valid path of the multipath device.

Before, when /dev/vdb is not a path of mpathb:
$ dmsetup message mpathb 0 reinstate_path /dev/vdb
$ echo $?
0

After:
$ dmsetup message mpathb 0 reinstate_path /dev/vdb
device-mapper: message ioctl failed: Invalid argument
Command failed
$ echo $?
1

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
---

Reading git-diff-tree failed