Hi,
We have 2 server that connected to SAN using Fibre channel and have a problem of LUN detected but not mounted and detect as raw disk after a reboot. Meanwhile the other servers able to mount it.

the PROBLEMATIC servers:
-----------------------------------
regndbrepo01:/dev/mapper # ls -l
total 0
brw-r----- 1 root disk 253, 0 Dec 4 16:46 360050768028082bde800000000000003
brw-rw---- 1 root disk 253, 1 Dec 4 16:46 360050768028082bde800000000000003_part1
brw-r----- 1 root disk 253, 3 Dec 4 16:46 360050768028082bde800000000000013
brw-r----- 1 root disk 253, 2 Dec 4 16:46 360050768028082bde80000000000001a
lrwxrwxrwx 1 root root 16 Dec 4 13:19 control -> ../device-mapper

the 2 disk that i have highlighted above doesnt contain the _part1. it detects as a raw disk.

the NORMAL servers:
---------------------------
eedb01:/dev/mapper # ls -l
total 0
brw-r----- 1 root disk 253, 0 Aug 1 11:23 360050768028082bde800000000000013
brw-rw---- 1 root disk 253, 1 Aug 1 11:23 360050768028082bde800000000000013_part1
brw-r----- 1 root disk 253, 2 Aug 1 11:23 360050768028082bde80000000000001b
brw-rw---- 1 root disk 253, 3 Aug 1 11:23 360050768028082bde80000000000001b_part1
lrwxrwxrwx 1 root root 16 Aug 1 11:23 control -> ../device-mapper

the one 1 highlight is the SAME LUN as the problematic one above. At this server it can be detected and have the "_part1"


We already rescan the disk in order to get the LUN mounted normal but FAIL.

Have anyone experience such this issue? Appreciate you can share and guide for the resolution.