On Thu, Jul 12, 2012 at 02:09:12PM +0400, Anton Nikiforov wrote: > Dear All, > > I have problem with setting up migration on Intel Multi-Flex server. > The problem is that SAS controller IDs (and volume ids in > /dev/disk/by-path directory) are different between nodes. > > For example on node0 i have: > lrwxrwxrwx 1 root root 9 Jun 29 07:20 > pci-0000:04:00.0-sas-0x500015500002040a-lun-0 -> ../../sda > lrwxrwxrwx 1 root root 10 May 27 09:17 > pci-0000:04:00.0-sas-0x500015500002040a-lun-0-part1 -> ../../sda1 > ....... > > On node1 i have: > lrwxrwxrwx 1 root root 9 Jul 12 21:19 > /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000155000020409-lun-0 -> > ../../sda > lrwxrwxrwx 1 root root 10 Jul 12 21:19 > /dev/disk/by-path/pci-0000:04:00.0-sas-0x5000155000020409-lun-0-part1 > -> ../../sda1 > ........ > > Difference is in 0x500015500002040a and 0x5000155000020409 > But this is the matter of migration falure because migration script > cannot find needed volume. > > Is there any chance to fix it somehow? Have you tried using /dev/disk/by-id/ aliases instead ? IIRC, those are based on the SCSI volume WWID which should be stable across any host seeing the LUN Daniel