[linux-lvm] Re: Recovering from disk failure
mru at users.sourceforge.net
Thu Aug 28 13:53:02 UTC 2003
Alasdair G Kergon <agk at uk.sistina.com> writes:
>> Recently one of two disks in a volume group crashed, and I can't read
>> it at all. Now, some LVs are entirely on the disk that survived. Is
>> there any way I can just disable the broken LVs and continue using the
>> complete ones? I'm using device-mapper and LVM2
> Read the description of '--partial' on the lvm(8) man page.
> e.g. (lv|vg)change -ay --partial
I should have read the manuals before mailing. However, I still have
some questions. Some LVs were split between the two disks. With the
--partial option, it won't let me see them at all. Can I do something
to get just read errors, or zeros, or whatever for the missing
sectors? I could of course do some manual work with dd, but an
automated method seems easier.
> And '--removemissing' in vgreduce(8) to *permanently* destroy
> the lost LVs (run with --test first to check what it will do).
I don't want to do that until I've salvaged all the information I can
get back. I have plenty of scratch space on other disks.
mru at users.sf.net
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