Florian Schmaus authored Jun 17, 2024 and Sam James committed Jul 21, 2024

Just like btrfs the bcachefs filesystem makes heaviy use of xattrs.

In my case

emerge --config gentoo-kernel

failed with

install-xattr: setxattr() failed: Operation not supported

A strace revealed

setxattr("/boot/efi/8410476acd4b1e12c678fc815c18f551/6.9.5-gentoo-dist/linux",
"bcachefs_effective.background_co"..., "zstd", 4, 0) = -1 EOPNOTSUPP (Operation not supported)

and indeed, the source file to the install operation was under
/usr/src which had background compression enabled. As a result,
install-xattr tried to copy the attribute over to the destination file
and failed.

Signed-off-by: Florian Schmaus <flow@gentoo.org>
Closes: https://github.com/gentoo/portage/pull/1346
Signed-off-by: Sam James <sam@gentoo.org>