On Sun, Apr 15, 2007 at 05:36:40PM +0000, Finnur Örn Guðmundsson wrote: > Pasi Kärkkäinen wrote: > >Hi list! > > > >I have a server with dual port Qlogic iSCSI HBA. I set up the same LUN for > >both ports, and boot the CentOS installer with "linux mpath". > > > >Installer detects multipathing fine, and creates mpath0 device for root > >disk. > >Installation goes fine, and the system boots up and works fine after the > >install from the multipath root device. > > > >After install the setup is like this: > > > >LUN 0 on port 1: /dev/sda > >LUN 0 on port 2: /dev/sdb > > > >and those form mpath0 device, which works OK. > > > >But then comes the problem.. when I add another LUN for both ports, the > >setup is like this: > > > >LUN 0 on port 1: /dev/sda > >LUN 1 in port 1: /dev/sdb > > > >LUN 0 on port 2: /dev/sdc > >LUN 1 on port 2: /dev/sdd > > > >And now after rebooting the system, root device multipath (mpath0) doesn't > >work anymore.. initrd seems to use/mount /dev/sda* partitions instead of > >mpath0 > >device. In fact the whole mpath0 is not started up. > > > >The weird thing is that the other LUN is now using multipathing instead.. > >using mpath1 device. > > > >How can I fix that? I'd like to use multipathing for both LUNs, also for > >root > >device. > > > >If I regenerate initrd with verbose flag, it just sets up the mpath1, not > >mpath0. I guess that's because mpath0 is not running when regenerating > >initrd. > > > >I have edited /etc/multipath.conf and disabled the "blacklist" line, and > >added multipath-entries for both LUNs. So those should be fine.. > > > >Any ideas? > > > >Thanks! > > > > > There seems to be a bug in the upstream version with mpath & root > devices.....I asked RedHat support to help me with a similar problem but > go the answer that i should wait until update 1....the current > implementation of mpath for boot devices seems to handle adding > paths/devices somewhat weird if you add/remove paths.... > Thanks for your reply! Did they have any workarounds? -- Pasi > Bgrds, > Finnur > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos