[SATLUG] multipath issues on SLES 10SP2.
j at jvpappas.net
Tue Jul 7 16:39:39 CDT 2009
On Fri, Jul 3, 2009 at 18:24, Greg Swift <gregswift at gmail.com> wrote:
> On Fri, Jul 3, 2009 at 15:19, Enrique Sanchez Vela
> <esanchezvela at yahoo.com>wrote:
> > We're deploying a number of systems using SUSE 10SP2 using EMC storage
> > multipath & LVM, and we have a bit of a problem, we have two groups of
> > systems, ones showing /dev/dm-XX physical volume name (groupA) and the
> > showing /dev/mapper/mpathXX name (groupB) when using the pvs command,
> > /etc/lvm/lvm.conf and /etc/multipath.conf files are exactly the same on
> > groups.
> I'm about to walk out the door, but my initial thought is that whomever ran
> the pvcreate just used the different path.
The /dev/dm-x paths and the /dev/mapper/vgn-lvn paths are equivalent to the
/dev/vgn/lvn paths, but the use and/or output differs depending on the tool
> Not sure what the fix to that would be *shrug*
Easy to change VG Names or LV names, ramifications vary though. `vgrename`
and `lvrename` respectively. Impact is mainly on the /etc/fstab entries,
and if your root is LVM and involved, the GRUB config as well.
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