Am 23.07.26 um 20:44 schrieb Nicholas D Steeves:
Michael Biebl <[email protected]> writes:

I would understand your argument, if I used the UUID for a different device.

Interestingly, I see no such failures with mkfs.ext4 or mkfs.xfs.

Yes, btrfs is different.  Feel free to write to the upstream btrfs
mailing list or to file a bug against the kernel.  Software that
supports btrfs needs to wipefs before mkfs.  The pitfall of not doing so
is documented in multiple locations and forums.
I considered whether I should forward this issue to upstream but then I found [1]. So I guess it's pointless to raise that again with fsarchiver.

I will add a manual wipefs call for the btrfs autopkgtest in fsarchiver even though I think this is only a work-around and not a proper fix.

Anyway, thanks for your fast response on this matter.

Regards,
Michael


[1] https://github.com/fdupoux/fsarchiver/issues/81#issuecomment-605625116

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