On 3/1/21 2:44 PM, bchatel...@cines.fr wrote:
I try to use multipath with SAS disk, transported by Fiber Channel, on Dell Compellent. My volume is detected on 2x R440 PowerEdge hosted by Centos 8 and orchestrated by oVirt. [...] # multipath -ll 36000d31003d5c2000000000000000010 dm-3 COMPELNT,Compellent Vol size=1.5T features='1 queue_if_no_path' hwhandler='1 alua' wp=rw `-+- policy='service-time 0' prio=25 status=active |- 1:0:0:2 sdb 8:16 active ready running `- 1:0:1:2 sdc 8:32 failed ready running -- looping failed/ready
The default mpt config for "COMPELNT/Compellent Vol" is already "multibus". There is no need to add a custom config to /etc/multipath.conf. Try: # save old configs mv /etc/multipath.conf /etc/_multipath.conf-$(date +%s) cp -a /etc/multipath/wwids /etc/multipath/_wwids-$(date +%s) # reconfig mp mpathconf --enable --user_friendly_names n multipath -W systemctl enable multipathd.service # recreate initrd, and reboot the system dracut -f init 6 If the default mode of "COMPELNT/Compellent Vol" arrays WERE CHANGED to ALUA, (dmesg -T | grep -i alua). The /etc/multipath.conf file must contain: devices { device { vendor "COMPELNT" product "Compellent Vol" path_grouping_policy "group_by_prio" prio "alua" failback "immediate" no_path_retry 30 } } Follow the same steps, but before "dracut -f" add that config to /etc/multipath.conf -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel