On 3/28/2011 1:24 PM, Stuart D. Gathman wrote: > 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. > > It sounds like dumb luck/divine mercy that the raid 1 PV on which the > production LV resides did not have a similar issue. It actually should be on all the time, which is why it defaults to on in ext4. A UPS doesn't help if the kernel crashes or some hardware fails. I have no idea why incidents like this are not common place with ext3 since it is inherently unsafe without barriers, whether you are using lvm or mdadm or not. _______________________________________________ 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/
