On 12/12/22 17:20, Samuel Sieb wrote:
On 12/12/22 13:54, ToddAndMargo via users wrote:
On 12/12/22 12:08, ToddAndMargo via users wrote:
On 12/12/22 06:43, Tom Horsley wrote:
On Mon, 12 Dec 2022 06:33:15 -0800
ToddAndMargo via users wrote:
This it?
dd if=/dev/zero of=/sometempfile
Seems like that would work. Might need to do it as root in case the
kernel doesn't allow an ordinary user to use up all the free space on
a disk. And don't forget "rm /sometempfile" once the dd finishes
with out of space errors.
Of course you could take a completely different tack and use
qemu-img convert to change the qcow2 format file to a raw
disk image and modify the virtual machine to use that new file.
I qemu-img to a raw and then back to a qcows2.
Dump/resore still did not restore right.
Now I converted to a raw and am about to see
if dump/restore will restore back correct.
If that does not work, I am going to dd /dev/zero
dump/restore restored a "raw" file perfectly.
Interesting. sha256sum came back different for
before and after (.000 is before)
# sha256sum KVM-W11.raw KVM-W11.raw.000
cbc480f889a9e337ab8b41b1e761da5f7f27ad255ceb29d891f60eba8f9903de
KVM-W11.raw
6dbf2d0d893f3fc0b5e529a94aad71770bc971ff567881073c8b8a05d9254fca
KVM-W11.raw.000
Dump and restore only interact with used blocks. So if there is old
data in unused blocks in the original disk, the dump won't save those
and the restore won't put them back.
That explains why the check sums are different,
but the restored files work. Thank you!
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