I have an nfs export: /mnt/Backup Hostname(no_root_squash,ro,mp) It exports this drive, LABEL=Backup /mnt/Backup btrfs noatime,compress-force=zstd:99
I have a locally mounted drive, /mnt/Mirror (LABEL=Mirror /mnt/Mirror btrfs compress-force=zstd:99,noatime,nofail) I mount the nfs share: mount Hostname:/mnt/Backup /mnt/Backup. I cp a file from one to the other, cp -av /mnt/Backup/snaps/elden/90/info.xml /mnt/Mirror/snaps/elden/90/info.xml. Under coreutils-9.1 I get no error. Under coreutils-9.2 I get cp: preserving permissions for ‘/mnt/Mirror/snaps/elden/90/info.xml’: Operation not supported In both cases the resulting copy looks like this: # ls -l /mnt/*/snaps/elden/90/info.xml -rw------- 1 root root 184 Apr 17 10:52 /mnt/Backup/snaps/elden/90/info.xml -rw------- 1 root root 184 Apr 17 10:52 /mnt/Mirror/snaps/elden/90/info.xml I git bisected with gentoo's live ebuild coreutils-9999 # first bad commit: [28a85116feef1f9a6f31c5ab8cfe50d7aa8d6fc4] build: update gnulib submodule to latest # cp --version cp (GNU coreutils) 9.2 Packaged by Gentoo (9.2-r2 (p0)) Copyright (C) 2023 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by Torbjorn Granlund, David MacKenzie, and Jim Meyering. Reproducible: Always