Subject: bug#51433: cp 9.0 sometimes fails with SEEK_DATA/SEEK_HOLE

From: Paul Eggert <[email-masked]>
Date: Wed, 3 Nov 2021 10:57:28 -0700

On 11/3/21 08:37, Pádraig Brady wrote:
> So this should unblock enabling coreutils 9 at some stage at least.

That's good news.

> I've asked at [1] now they know what's going on,
> how programs might best distinguish buggy instances of openzfs.

Maybe "configure" could do a "modinfo zfs" or a "cat 
/sys/modinfo/zfs/version"? Admittedly that's *quite* a hack and of 
course wouldn't be that reliable.

PS. Is there some way to arrange for this OpenZFS patch to be backported 
to Fedora relatively quickly? (I ask as a Fedora user. :-)