----- Original Message ---- > From: Joost Roeleveld <jo...@antarean.org> > On Thursday 07 April 2011 06:20:55 BRM wrote: > > ----- Original Message ---- > > > From: Neil Bothwick <n...@digimed.co.uk> > > > On Thu, 07 Apr 2011 05:22:41 -0500, Dale wrote: > > > > I want to do it this way because I don't trust LVM enough to put my > > > > OS > > > > on. Just my personal opinion on LVM. > > > > > > This doesn't make sense. Your OS can be reinstalled in an hour or two, > > > your photos etc. are irreplaceable. > > > > Makes perfect sense to me as well. > > > > Having installed LVM - and then removed it due to issues; namely, the fact > > that one of the hard drives died taking out the whole LVM group, leaving > > the OS unbootable, and not easily fixable. There was a thread on that > > (started by me) a while back (over a year). > > > > So, perhaps if I had a RAID to underly so I could mirror drives under LVM > > for recovery I'd move to it again. But otherwise it is just a PITA waiting > > to happen. > > > > Ben > > Unfortunately, any method that spreads a filesystem over multiple disks can > be > > affected if one of those disks dies unless there is some mechanism in place > that can handle the loss of a disk. > For that, RAID (with the exception of striping, eg. RAID-0) provides that. > > Just out of curiousity, as I never had the need to look into this, I think > that, in theory, it should be possible to recover data from LVs that were > not
> using the failed drive. Is this assumption correct or wrong? > If you have the LV configuration information, then yes. Since I managed to find the configuration information, I was able to remove the affected PVs from the VG, and get it back up. I might still have it running, but I'll back it out on the next rebuild - or if I have a drive large enough to do so with in the future. I was wanting to use LVM as a bit of a software RAID, but never quite got that far in the configuration before it failed. It does do a good job at what it's designed for, but I would not trust the OS to it either since the LVM configuration is very important to keep around. If not, good luck as far as I can tell. Ben
