On Thu, Oct 23, 2025 at 07:18:24PM +0200, Arsen Arsenović wrote: > "Richard W.M. Jones" <[email protected]> writes: > > > On Thu, Oct 23, 2025 at 06:45:33PM +0200, Arsen Arsenović wrote: > >> "Richard W.M. Jones" <[email protected]> writes: > >> > >> > I was definitely expecting this one to fail with ENOTSUP or similar. > >> > That's with the file copy-allocated-destination-zero-synch.out on ZFS? > >> > >> Yes - my home directory is on ZoL, and so is ~/tmp. > > > > It appears this is a limitation of OpenZFS: > > > > https://github.com/openzfs/zfs/blob/fc519b2c1108b52aaad63e356645f63c2c167f82/module/os/linux/zfs/zpl_file.c#L665 > > I figured that might be the case. ZFS has a few instances of similar > issues.
In QEMU, we ended up skipping several tests on ZFS that rely on measuring sparseness, because of the unpredictability of ZFS: https://gitlab.com/qemu-project/qemu/-/commit/c49dda72 -- Eric Blake, Principal Software Engineer Red Hat, Inc. Virtualization: qemu.org | libguestfs.org _______________________________________________ Libguestfs mailing list -- [email protected] To unsubscribe send an email to [email protected]
