Try using the -U option and specify the uuid of the correct vg. U can get vg uuid using vgdisplay. -nb --- On Mon, 1/18/10, Jason Dusek <jason.dusek@gmail.com> wrote: > From: Jason Dusek <jason.dusek@gmail.com> > Subject: Mounting an LVM disk image. > To: linux-lvm@redhat.com > Date: Monday, January 18, 2010, 6:15 PM > I'm trying to mount a disk > image that contains an LVM volume. > I've managed to follow this tutorial to the point > where I've > got the volume on `/dev/loop7': > > http://www.thegibson.org/blog/archives/467 > > Now I want to mount the image. My machine, a CentOS > machine, > is already using LVM; running `lvm pvscan' shows me > that the > the disk image has been stuck in `VolGroup00' with > the rest of > them: > > :; lvm pvscan > PV /dev/loop7 VG > VolGroup00 lvm2 [7.88 GB / 0 > free] > PV /dev/sda5 VG > VolGroup00 lvm2 [133.06 GB / 0 > free] > PV /dev/sdb2 VG > VolGroup00 lvm2 [135.16 GB / 0 > free] > Total: 3 [276.09 GB] / in use: 3 [276.09 GB] > / in no VG: 0 [0 ] > > At this point in the tutorial, I run in to trouble. > As they > suggest, I run `lvm vgchange -ay' and then inspect > `/dev/mapper': > > :; lvm vgchange -ay > 2 logical volume(s) in volume group > "VolGroup00" now active > 2 logical volume(s) in volume group > "VolGroup00" now active > :; ls /dev/mapper/ > control VolGroup00-LogVol00 > VolGroup00-LogVol01 > > Mounting fails: > > :; mount -t ext2 > /dev/mapper/VolGroup00-LogVol01 /media/img/ > mount: /dev/mapper/VolGroup00-LogVol01 > already mounted or /media/img/ busy > :; mount -t ext2 > /dev/mapper/VolGroup00-LogVol00 /media/img/ > mount: /dev/mapper/VolGroup00-LogVol00 > already mounted or /media/img/ busy > mount: according to mtab, > /dev/mapper/VolGroup00-LogVol00 is mounted on / > > At this point, I'm stuck. I've tried removing > `/dev/loop7' > from the volume group, to no avail: > > :; vgcreate shim /dev/loop7 > Physical volume '/dev/loop7' is already in > volume group 'VolGroup00' > Unable to add physical volume '/dev/loop7' to > volume group 'shim'. > :; vgreduce VolGroup00 /dev/loop7 > Physical Volume "/dev/loop7" not found in > Volume Group "VolGroup00" > > What's the right way to mount and LVM disk image? > I'm doing it > to perform maintenance on a Xen guest. > > -- > Jason Dusek > > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ > _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
