Hello Chris,
> Per multipath.conf(5):
> | strict Both multipath and multipathd treat only such devices as
> multipath devices which have been
> | part of a multipath map previously, and which are therefore
> listed in the wwids_file.
> | Users can manually set up multipath maps using the multipathd add
> map command. Once set up
> | manually, the map is remembered in the wwids file and will be set
> up automatically in the
> | future.
I wasn't aware of that. Thank you for pointing it out and resolving our issue.
> I would guess your wwids/bindings files are empty, and thus you need to
> follow the advice in the manpage: use multipathd add map, or maybe
> multipath -a.
Yes, that helped, once I executed the following commands, it works:
(live) [/etc/multipath] lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 238.5G 0 disk
sdb 8:16 1 58.9G 0 disk
├─sdb1 8:17 1 855M 0 part
└─sdb2 8:18 1 4M 0 part
sdc 8:32 0 750G 0 disk
sdd 8:48 0 750G 0 disk
sr0 11:0 1 1024M 0 rom
(live) [/etc/multipath] multipath -a /dev/sdc
wwid '3600a0980383143687224554b5472596b' added
(live) [/etc/multipath] multipath -l
(live) [/etc/multipath] cat wwids
# Multipath wwids, Version : 1.0
# NOTE: This file is automatically maintained by multipath and multipathd.
# You should not need to edit this file in normal circumstances.
#
# Valid WWIDs:
/3600a0980383143687224554b5472596b/
(live) [/etc/multipath] /etc/init.d/multipath-tools restart
Restarting multipath-tools (via systemctl): multipath-tools.service.
(live) [/etc/multipath] multipath -l
3600a0980383143687224554b5472596b dm-0 NETAPP,LUN C-Mode
size=750G features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 alua'
wp=rw
|-+- policy='service-time 0' prio=0 status=active
| `- 7:0:0:0 sdc 8:32 active undef running
`-+- policy='service-time 0' prio=0 status=enabled
`- 8:0:0:0 sdd 8:48 active undef running
Cheers,
Thomas
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