2012/11/4 Alan Feuerbacher <alanf00@xxxxxxxxxxx>
Ok lets try
shell# pvs
you must see line /dev/sdc2 and its VG name
shell# vgscan
shell# vgchange -a y "VG name from pvs output"
shell# lvscan
here goes your ACTIVE "/dev/***" output
shell# mnt "/dev/***" /mnt/fedora32
On 11/4/2012 1:10 PM, Tim wrote:
Firstly, it was already doing "auto," as far as I'm aware, so that's
pretty much redundant. What's really missing is *which* partition to
try and mount on sdc.
Device Boot Start End Blocks Id System
/dev/sdc1 * 2048 206847 102400 83 Linux
/dev/sdc2 1026048 2930276351 1464625152 8e Linux LVM
The small sdc1 is, most likely, a boot partition, which you can ignore.
That's right. sdc2 contains the data I want to retrieve.
You want to be trying to mount sdc2.
However, that's LVM, not a plain partition, and I'm fairly certain that
you want to use the LVM tools to mount it. And, I'm very certain that
you're going to have problems if it uses the same volume names as your
new drive that you're running from. The simplest solution will probably
be to rename your old volumes before you attempt to mount them.
That sounds very reasonable. Unfortunately, after looking at the man page for lvm and its associated sub-programs, and trying a number of them, I can't find anything that looks like it might work.
The basic problem is that the lvm tools don't seem to recognize sdc2 as an LVM partition. I don't understand why, because that disk was formatted by the Fedora installer. It was a completely vanilla installation, so far as I know. I'm still at a loss here.
So, look into managing LVM volumes, then get back to the list when you
get stuck again. (It's ages since I've tried anything with LVM, it's
probably changed since then, and I've probably forgotten what I did.)
Anything you can remember could be very helpful.
Future hint: Next time you create LVM volumes and partitions, put
something unique into their names. A date, a name, or a number...
Well, whatever is there was chosen by the Fedora installer when I installed the 32-bit system some days ago.
But if you never intend to try and span across several discs, which
brings about its own set of hazards (one failure on any disc, and all of
them becomes wrecked), I'd advise to completely avoid LVM on your next
installation.
I more or less tried that on my old 32-bit system. I installed a new disk and installed Fedora on a non-LVM partition. It could not see the LVM partition on the older disk -- same problem as I have now.
Thanks for your help.
Ok lets try
shell# pvs
you must see line /dev/sdc2 and its VG name
shell# vgscan
shell# vgchange -a y "VG name from pvs output"
shell# lvscan
here goes your ACTIVE "/dev/***" output
shell# mnt "/dev/***" /mnt/fedora32
Alan
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