[Dump-users] dump and sparse file question

[ToddAndMargo <Tod...@zo...>]

Hi All,

Fedora 36 and 37
dump-0.4-0.49.b47.fc36.x86_64
qemu-kvm-7.1.0-3.fc36.x86_64
ext4 file system

I have an absolute disaster on my hands. Dump does not properly 
restoring my sparse qemu-kvm qcows2 drives. I frequently restored my 
qcows2 drive after goofing my Windows Virtual Machines' (VM's) with 
updates (have to simulate what my customers see). All VM's were off 
during the dump backup.

gparted sees (booting the VM off a live iso) the restored drive as a 
blank drive.

In the following, the qcows2 file whit the date on the end is the good 
file. The one without the date is the restored file:

ls -al KVM-W11.qcow2 KVM-W11.qcow2_2022-12-11
-rw-r--r--. 1 qemu qemu 33615708160 Dec 8 02:28 KVM-W11.qcow2
-rw-r--r--. 1 qemu qemu 33615708160 Dec 8 02:28 KVM-W11.qcow2_2022-12-11

sha256sum KVM-W11.qcow2 KVM-W11.qcow2_2022-12-11
2ed61cdbb654c5a6c69200d5531a5147653561c13f75944fb1086d9c80fcd96b 
KVM-W11.qcow2
05c48a0994a8c6f748e218104c7a6fd9117b4de357a97c51704ed74082c26f04 
KVM-W11.qcow2_2022-12-11

As you can see, they are the same size but not the same contents!

This was the restore command:
restore -if /lin-bak/2022-12-10_rootExt4Dump.gz

Any words of wisdom?

Many thanks,
-T

-- 
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Computers are like air conditioners.
They malfunction when you open windows
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