Perl logs warning message if a variable is not initialized.
get_device_data() set mp_dev with multipath device for a scsi disk device.
mp_dev remain uninitialized if there is no multipath device.
This can happen if a scsi device is not managed by dm multipath driver.
Warning message:
"Use of uninitialized value in subroutine entry at /usr/sbin/ziorep_config line 136"
Fix it by skipping the code dealing with mp_dev and continue with next
scsi device in the loop.
To reproduce, remove a scsi device from dm multipath.
$multipathd -k'del path sdh'
Then run `ziorep_config -D`.
Signed-off-by: Nihar Panda <niharp@linux.ibm.com>
Reviewed-by: Fedor Loshakov <loshakov@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
41eb7d076f