[Xen-users] Resizing DomUs

["Harold A. Giménez Ch." <harold.gimenez@xxxxxxxxx>]

Hi group,

I'm sure this has been discussed numerous times, but I would like some pointers on troubleshooting the resizing of a DomU built on an image file (not LVM).

To add another 20GB, I tried running the following, as root:

dd if=/dev/zero bs=1M count=20480 >> img_file.img

20480+0 records in

20480+0 records out

21474836480 bytes (21 GB) copied, 1578.68 s, 13.6 MB/s

/sbin/resize2fs img_file.img

resize2fs 1.40.4 (31-Dec-2007)

/sbin/resize2fs: Bad magic number in super-block while trying to open img_file.img

Couldn't find valid filesystem superblock.

Also, this command fails:
/sbin/e2fsck -f img_file.img

I have several DomUs running and are very stable. However, the e2fsck fails on all of them. What am I doing wrong?

Thanks for any help you can provide,
-Harold

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