On Mon, Mar 28 2011 at 1:24pm -0400, Stuart D. Gathman <stuart@bmsi.com> wrote: > On Mon, 28 Mar 2011, Phillip Susi wrote: > > >On 3/27/2011 5:55 PM, Stuart D. Gathman wrote: > >>Don't need help, just trying to understand the event. So from what you > >>said, the problem probably stems from the RAID1 resync, which could > >>make one PV "older" than the other. > > > >The data is written to the primary mirror first, so this can't happen. > >Proper use of barriers will prevent this whole scenario, so my guess is > >that you are using ext3 ( which defaults to nobarrier ) or explicitly > >mounting ext4 with nobarrier. > > Ah, thank you! Yes, I am using ext3 with EL5.5 defaults, and will now learn > about the barrier option. Seems like a good thing to turn on when "replace > battery" comes up on the ups. RHEL5.x's DM doesn't support barriers (nor does MD afaik). _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
