Anne Facq annefacq@crpp-bordeaux.cnrs.fr writes:
Aaron Clark wrote:
Anne Facq wrote:
Hello
I use XEN on Fedora 8 with Domu on a LVM partition.
Before, on Fedora Core 6, I could backup each Domu by directly mounting the filesystem of the Domu (mount /dev/vg00/lvfoo /mnt) and then running dump on it.
On Fedora 8, I can't mount directly the filesystem of the Domu, so I
Pardon if this is a dumb question, but why not?
Because in Dom0 the device for a paravirt Domu (/dev/vg00/lvfoo in my case) is mapped to a virtual disk /dev/xvda (I created the Domu with virt-install), and the only way I found to mount this Domu filesystem, is to :
- get the size of the boot sector of /dev/vg00/lvfoo (with fdisk -ul /dev/vg00/lvfoo) = 63
- compute the offset (multiply by block size)
- specify this offset to the mount command :
mount -o offset=32256 /dev/vg00/lvfoo /mnt/
As I can't specify an offset to dump, the command "dump 0 -f lvfoo.dump /mnt" doesn't work.
Shot from the hip: losetup with the offset?
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