Or you can map a specific LUN device ID number with a specific name under /etc/multipath.conf, so you'll always have the same device name for a specific LUN designated for the quorum device.
Regards, Celso ----- Original Message ---- From: Kit Gerrits <[email protected]> To: linux clustering <[email protected]> Sent: Wed, May 5, 2010 9:01:57 PM Subject: Re: [Linux-cluster] Get qdisk to use /dev/mapper/mpathx devices insteadof /dev/dm-x The danger in using /dev/dm-x is that there is no guarantee that the same device will show up at the same place after a reboot. Seeing as you use disklabels, this becomes a non-issue. Aside from that, I am not aware of any other reasons not to use /dev/dm-x -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Don Hoover Sent: woensdag 5 mei 2010 20:03 To: [email protected] Subject: [Linux-cluster] Get qdisk to use /dev/mapper/mpathx devices insteadof /dev/dm-x I have recently learned that its dangerous to use /dev/dm-x devices for LVM because they do not function correctly with multipath, and that you should always use the /dev/mapper/mpathx devices. Something about the fact that udev actually destroys and recreates the dm devices when paths change. But, qdisk seems to prefer using dm-x devices. Is there a way to get it to prefer using /dev/mapper/mpathx devices if they are available? I know you can spec the device instead of the label, but I would like to avoid that. -- Linux-cluster mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-cluster No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.814 / Virus Database: 271.1.1/2853 - Release Date: 05/05/10 08:26:00 -- Linux-cluster mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-cluster -- Linux-cluster mailing list [email protected] https://www.redhat.com/mailman/listinfo/linux-cluster
