Package: linux-image-6.1.0-10-amd64
Version: 6.1.38-2
rename(2) on a symlink on an overlayfs where the lower filesystem is NFS
fails with ENXIO.
It can be reproduced as follows:
lower=/nfs/lower # /nfs should be an nfs mount
mkdir -p "${lower}" /upper /work /merged
touch "${lower}"/foo
ln -s foo "${lower}"/bar
mount -t overlay overlay -o lowerdir="${lower}",upperdir=/upper,workdir=/work
/merged
mv /merged/bar /merged/baz
If $lower is e.g. ext4 this works. This is a regression over kernel
5.10 in bullseye. It affects ltsp causing booting into root fs on NFS
to fail due to an initrd script which temporarily renames the /sbin/init
symlink, see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1049397
--
Guido Berhoerster
