tree 49df397ce008ecc7f2e19caadb86c1c7c7fbcbf3
parent f868120549fc1664b2c451d4b9882a363928c698
author Mike Snitzer <snitzer@redhat.com> 1300974871 +0000
committer Alasdair G Kergon <agk@redhat.com> 1300974871 +0000

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>