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xen-users
RE: [Xen-users] Mounting RHEL 4 virtual machine disks (dd/mount -oloop)
On Tue, 17 Apr 2007, Kraska, Joe A (US SSA) wrote:
Mkay. Maybe it wasn't obvious but "hda" in the above mount command is
the
Xen image file. It was the file made with dd, into which RHEL44 was
installed
using Qemu. I'm a bit confused in your instructions, because you seem to
be
forwarding me to a /dev/hda, and don't reference my file based image at
all.
That I can see.
Ahh. my mistake then.
it's
losetup /dev/loop1 /path/to/file
now /dev/loop1 (you may need to increment or decrement the 1 to get a
free loop device) is a device in the Dom0 that looks a lot like how the
DomU would see /dev/hda.
so now you go from /dev/loop1 to the sub-partitions.
kpartx -av /dev/loop1
would be how you would do it if it were straight partitions.
with lvm, you need to vgscan it, but from what I understand, vgscan scans
all devices, including or excluding certain devices in the lvm config
files. (on my system, /etc/lvm/lvm.conf specifies a filter= that excludes
the cdrom device) You need to somehow get vgscan to read /dev/loop1.
(it is possible that just 'vgscan' or 'lvscan' after you do the losetup
will do the job.)
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