Issue

• multipath device uuid changing after reconnecting underlying storage device.
• scsi_id command page 83 output does not match with the device name appearing in multipath -ll command. After the reboot, these two IDs match and change after two to three days.

# /lib/udev/scsi_id --page=0x80 --whitelisted --device=/dev/sdb
SIBM     2145            0200a040e848XX00

# /lib/udev/scsi_id --page=0x83 --whitelisted --device=/dev/sdb
360050768028083a120000000000004ec

# multipath -ll | grep -A 5 SIBM
SIBM_2145_0200a040e848XX25 dm-83 IBM     ,2145            
size=50G features='1 queue_if_no_path' hwhandler='0' wp=rw
|-+- policy='service-time 0' prio=50 status=active
| `- 2:0:0:34 sdbw 68:160 active ready running
`-+- policy='service-time 0' prio=10 status=enabled
  `- 1:0:0:34 sdb  8:16   active ready running