Dual VIO Linux Status
From Linux on Power wiki
| Version | mdadm mirror | mdadm multipath | dm_multipath |
|---|---|---|---|
| SLES9 | Works for root and data: See installation instructions at http://www.ibm.com/developerworks/eserver/library/es-conf-swraid/ .
PrepBoot partitions will be fat formatted. | Works for root and data with mdadm multipath personality. Disk-by-name or disk-by-path names can be used for mdadm configuration. Nested devices (mirroring multipath devices should work too, but will need custom scripts to get activated. | Works with data partitions only (no root). Reported working with IBM-Storage, SVC and Hitachi depends scsi_id feature (VIO 1.3 need to be patched) SCSI3 feature. Multipath .conf can be edited (but not has to) to assign user friendly names. |
| SLES10 | Cell 2 | Cell 3 | Works for data (like SLES9). Rootvg can be on multipath too, single path installation first, configure multipath, reboot. Root on multipath is supported. /etc/lilo.conf should not use /dev/disk-by-name, but /dev/disk-by-uuid |
| RHEL4U4 | Cell 2 | disk-by-name missing, LVM is recommended. Root mdadm module missing, 3d disk needed (pvmove) | dm_multipath only supported for data, multipath.conf must be edited (change blacklists, add all not multipathed devices. Root on dm_multipath is not working and not supported. ) |
| RHEL5 | Cell 2 | Cell 3 | Install mpath and works for root and data out of the box. |
