Using CentOS 5.4 Xen Virtualization "stock install"
Added rpmforge NTFS extension for mount command.
Scenario: Have mirror dd'd off to "backup" unmounted LV contained Windows machine. Within the LVM volume are two NTFS partitions formatted by Win2k8.
Issue: How can I mount this? I need to verify file existence and run batch of file compare checks.
If I try to mount the LV:
~~~~~~~~~~~~~ [root@vm1 ~]# mount -t ntfs /dev/thisvg00/thisw2kwe-b4change /mnt/ntfs NTFS signature is missing. Failed to mount '/dev/mapper/serv1vg00-w2kwe--b4cert': Invalid argument The device '/dev/mapper/serv1vg00-w2kwe--b4cert' doesn't seem to have a valid NTFS. Maybe the wrong device is used? Or the whole disk instead of a partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around? ~~~~~~~~~~~~~
Would I have had an easier situation if I just had made one big C: partition instead of two (1 for OS and progs, other for data and applications)?
----- "Ben M." centos@rivint.com wrote:
If I try to mount the LV:
[root@vm1 ~]# mount -t ntfs /dev/thisvg00/thisw2kwe-b4change /mnt/ntfs NTFS signature is missing. Failed to mount '/dev/mapper/serv1vg00-w2kwe--b4cert': Invalid argument The device '/dev/mapper/serv1vg00-w2kwe--b4cert' doesn't seem to have a valid NTFS. Maybe the wrong device is used? Or the whole disk instead of a partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
Did you dd the disk or the partition? If you did the whole disk (verify with fdisk or something), you can use kpartx to add the LV as a disk and then mount the partitions that are created.
I dd'd the LV from a snapshot to an empty LV on a different VG with identical extents like this:
dd if=/dev/vgsnapshotsource/win2k8-snapshot of=/dev/vgtarget/win2k8-target
I'm a little confused by what you mean by "partition" and disk in this context. There is the LV container created, a partition, but also a volume and presented as a "disk" to the Windows vm.
Then inside that LV, W2k8 is installed, and that partitioned inside that LV two logical drives which were then formatted NTFS by the W2k8 installation.
So, I dd'd the LV "partition" but wasn't I also dd'd Window's "perception" of its disk?
Christopher G. Stach II wrote:
----- "Ben M." centos@rivint.com wrote:
If I try to mount the LV:
[root@vm1 ~]# mount -t ntfs /dev/thisvg00/thisw2kwe-b4change /mnt/ntfs NTFS signature is missing. Failed to mount '/dev/mapper/serv1vg00-w2kwe--b4cert': Invalid argument The device '/dev/mapper/serv1vg00-w2kwe--b4cert' doesn't seem to have a valid NTFS. Maybe the wrong device is used? Or the whole disk instead of a partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?Did you dd the disk or the partition? If you did the whole disk (verify with fdisk or something), you can use kpartx to add the LV as a disk and then mount the partitions that are created.
-
Ben M. -
Christopher G. Stach II