Package: nfs-kernel-server Version: 1:1.2.8-9 Severity: normal The no_root_squash option appears to work on i386, but not on amd64.
wooledg@wooledg:~$ grep '^[^#]' /etc/exports /home -no_subtree_check arc1(ro,no_root_squash,sync) arc1:~# ls /net/hosts/wooledg/home/wooledg/.bash* /net/hosts/wooledg/home/wooledg/.bash_history /net/hosts/wooledg/home/wooledg/.bash_logout /net/hosts/wooledg/home/wooledg/.bashrc arc1:~# ls /net/hosts/wooledg/home/wooledg/Maildir ls: cannot open directory /net/hosts/wooledg/home/wooledg/Maildir: Permission denied This is somewhat similar to bug #492970, but it's architecture specific and it appears to be on the server side, not the client side. I've confirmed with NFSv3 and NFSv4 mounts from other Debian systems, and with an HP-UX client. See also: https://lists.debian.org/debian-user/2016/08/msg00245.html https://lists.debian.org/debian-user/2016/08/msg00275.html I filed the bug report from "wooledg" (my desktop box) because it has an absolutely minimal configuration that still demonstrates the problem. The real problem that I care about is on a server with many other exports as well. Same problem: jessie, amd64, no_root_squash is ignored. Jessie i386 systems work fine. -- Package-specific info: -- rpcinfo -- program vers proto port service 100000 4 tcp 111 portmapper 100000 3 tcp 111 portmapper 100000 2 tcp 111 portmapper 100000 4 udp 111 portmapper 100000 3 udp 111 portmapper 100000 2 udp 111 portmapper 100024 1 udp 55248 status 100024 1 tcp 48807 status 100003 2 tcp 2049 nfs 100003 3 tcp 2049 nfs 100003 4 tcp 2049 nfs 100227 2 tcp 2049 100227 3 tcp 2049 100003 2 udp 2049 nfs 100003 3 udp 2049 nfs 100003 4 udp 2049 nfs 100227 2 udp 2049 100227 3 udp 2049 100021 1 udp 55895 nlockmgr 100021 3 udp 55895 nlockmgr 100021 4 udp 55895 nlockmgr 100021 1 tcp 38500 nlockmgr 100021 3 tcp 38500 nlockmgr 100021 4 tcp 38500 nlockmgr 100005 1 udp 43131 mountd 100005 1 tcp 49060 mountd 100005 2 udp 47185 mountd 100005 2 tcp 49686 mountd 100005 3 udp 52717 mountd 100005 3 tcp 35670 mountd -- /etc/default/nfs-kernel-server -- RPCNFSDCOUNT=8 RPCNFSDPRIORITY=0 RPCMOUNTDOPTS="--manage-gids" NEED_SVCGSSD="" RPCSVCGSSDOPTS="" -- /etc/exports -- /home -no_subtree_check arc1(ro,no_root_squash,sync) -- /proc/fs/nfs/exports -- # Version 1.1 # Path Client(Flags) # IPs -- System Information: Debian Release: 8.5 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages nfs-kernel-server depends on: ii libblkid1 2.25.2-6 ii libc6 2.19-18+deb8u4 ii libcap2 1:2.24-8 ii libsqlite3-0 3.8.7.1-1+deb8u1 ii libtirpc1 0.2.5-1 ii libwrap0 7.6.q-25 ii lsb-base 4.1+Debian13+nmu1 ii nfs-common 1:1.2.8-9 ii ucf 3.0030 nfs-kernel-server recommends no packages. nfs-kernel-server suggests no packages. -- debconf-show failed
