2012/11/4 Alan Feuerbacher alanf00@comcast.net
On 11/4/2012 2:34 PM, Alchemist wrote:
I more or less tried that on my old 32-bit system. I installed a newdisk 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.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
Here's what I get doing some of that:
################# [root@alan-fedora ~]# pvs PV VG Fmt Attr PSize PFree /dev/sdb3 vg_alan-fedora lvm2 a-- 2.73t 0
[root@alan-fedora ~]# vgscan Reading all physical volumes. This may take a while... Found volume group "vg_alan-fedora" using metadata type lvm2
[root@alan-fedora ~]# lvscan ACTIVE '/dev/vg_alan-fedora/lv_swap' [17.38 GiB] inherit ACTIVE '/dev/vg_alan-fedora/lv_home' [2.66 TiB] inherit ACTIVE '/dev/vg_alan-fedora/lv_root' [50.00 GiB] inherit #################
I don't see a VG name for /dev/sdc2.
I'm confused about what vgchange is supposed to do. The man page does not say what it does with the line you suggested. Specifically, the command takes an INPUT volume name, and the implication is that that name will be changed, but changed to what?
Alan
That line makes volume group active. But not in this case. If both volumes are made by Anaconda and both have name "vg_alan-fedora" (as hostname) it may cause misunderstanding, for pvscanning, but as far as i know, pvs shows all VG even with same labels. Do you use Gnome? You check it with palimpsest, or all this is console releated only? Next, you can power off pc, disconnect/disable your master hdd(new), enable only old and boot from LiveCD(Fedora or any that supports LVM) and rename your old hdd VG vg_alan-fedora to f.e. vg_alan_old, so if there is a problem with naming, you now will have twoo different VG labels. Then connect/enable back your master drive, and boot as now. Then try again to pvscan. In any case be careful, do not damage your data!!!
how to rename>>> livecd# pvs livecd# vgscan livecd# vgchange -a n livecd# vgrename vg_alan-fedora vg_alan-old
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