On Tue, Dec 26, 2006 at 11:00:35AM -0500, Jay Zach wrote: > > I've played around with LVM a bit, but not a LOT.... > > I've often wondered if you have non-raid partitions making up the PV's of the > LV's, and had a PV fail what would happen....
Generally, that is a Bad Thing(TM). > Since all the PV's are lumped together, would one just have random data loss > across the LV? That seems like it would be a pain in the behind to restore That's pretty much the size of it. A real pain. > if that was the case.... Has anyone here lost a disk in a volume and can > answer to that? (of course if one had mirrored disks making up the PV's > that wouldn't be a concern) > As much. You could always have *two* disk failures wipingout the mirrored pair (I heard about such things happening from manufacturing defects, e.g., the DeathStar drives from IBM/Hitachi). > Any insight would be appreciated :) > In general, I look at naked LVM as about the same reliability level as RAID0. The only thing for which I would use such a setup are for data which can be easily recreated. For example, if you are rendering CG animations and need *lots* of temporary space in a single volume. The worst thing that a complete disk failure will cause will be the loss of a few hours' work, which can be relatively easily recreated. Regards, -Roberto -- Roberto C. Sanchez http://people.connexer.com/~roberto http://www.connexer.com
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