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