On Sun, Jan 14, 2024 at 11:32:37PM -0500, Stefan Monnier wrote:
> What happens if you use diskimages that contain directly a filesystem
> without going through the trouble of using a partition table?
> Does `ext4` also get tripped by the different underlying block size?
I believe it will also fail but I haven't directly experimented.
On the target host I was able to use fdisk (or gdisk or parted or
whatever…) to change the partition table to be "correct", which
enabled me to then use "kpartx" to expose the partition out of the
disk image as a loop device as usual. However, the ext4 driver and
fsck.ext4 were still unable to find superblocks on this. This
despite a sha256sum of the loop device coming back with the same
hash as a sha256sum of the partition on the source.
In your dd commands that moved these filesystems, did you specify ibs= and/or obs=
?
If so, what values did you use?
....