Package: autofs Version: 5.0.8-2 Severity: wishlist Dear Maintainer,
As described in the final section of https://www.kernel.org/doc/Documentation/filesystems/autofs4.txt it is necessary to run "mount --make-shared /autofs/mount/point" on systems which make use of bind mounts and/or namespaces, or else things start spuriously failing with ELOOP. Assuming that there is no desire to change the default then having an easy way to configure this would be very useful. Locally I've gone with the following patch but it is obviously pretty specific to our NIS environment. diff --git a/init.d/autofs b/init.d/autofs index 2de0f26..cc6bf97 100755 --- a/init.d/autofs +++ b/init.d/autofs @@ -60,6 +60,17 @@ start() { return 1 fi log_end_msg 0 + + # See end of https://www.kernel.org/doc/Documentation/filesystems/autofs4.txt + # autofs mount points need to be made shared else they can interact + # badly with the use of namespaces. + log_action_begin_msg "Making automount roots shared" + for mnt in $(ypcat -k auto.master | cut -f1 -d' ') ; do + log_action_cont_msg " $mnt" + mount --make-shared $mnt + done + log_end_msg 0 + return 0 } I'm running Jessie but I've checked the Stretch and Sid changelogs (Debian and upstream) and I didn't see anything which suggested this had changed. Thanks! Ian. -- System Information: Debian Release: 8.1 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Init: sysvinit (via /sbin/init) Versions of packages autofs depends on: ii libc6 2.19-18 ii libxml2 2.9.1+dfsg1-5 ii multiarch-support 2.19-18 ii ucf 3.0030 Versions of packages autofs recommends: ii kmod 18-3 ii module-init-tools 18-3 ii nfs-common 1:1.2.8-9 autofs suggests no packages. -- Configuration Files: /etc/apm/event.d/autofs 374404a5115c1c9ef87fc99fab9600c1 [Errno 2] No such file or directory: u'/etc/apm/event.d/autofs 374404a5115c1c9ef87fc99fab9600c1' /etc/auto.master a0e3fc444b0824664ffc04826e2f3c97 [Errno 2] No such file or directory: u'/etc/auto.master a0e3fc444b0824664ffc04826e2f3c97' /etc/auto.net 0acd3943236c9eae496eb815610c25db [Errno 2] No such file or directory: u'/etc/auto.net 0acd3943236c9eae496eb815610c25db' /etc/auto.smb eec3f773e09846b7d4325f0ce20ab5bd [Errno 2] No such file or directory: u'/etc/auto.smb eec3f773e09846b7d4325f0ce20ab5bd' /etc/default/autofs 424c4415a458ca32a56e88f847a80690 [Errno 2] No such file or directory: u'/etc/default/autofs 424c4415a458ca32a56e88f847a80690' /etc/init.d/autofs changed: PROG=automount DAEMON=/usr/sbin/$PROG NAME=autofs PIDFILE="/var/run/$NAME.pid" test -e $DAEMON || exit 0 PATH=/sbin:/usr/sbin:/bin:/usr/bin export PATH . /lib/lsb/init-functions if [ -r /etc/default/autofs ]; then . /etc/default/autofs fi start_stop_autofs() { start-stop-daemon "$@" --pidfile $PIDFILE --exec $DAEMON -- \ $OPTIONS --pid-file $PIDFILE } start() { log_action_begin_msg "Starting $PROG" if ! grep -qw autofs /proc/filesystems then if ! modprobe autofs4 >/dev/null 2>&1 then log_action_end_msg 1 "failed to load autofs4 module" return 1 fi elif [ -f /proc/modules ] && grep -q "^autofs[^4]" /proc/modules then log_action_end_msg 1 "autofs kernel module is loaded, autofs4 required" return 1 fi if ! start_stop_autofs --start --oknodo --quiet ; then log_action_end_msg 1 "no valid automount entries defined." return 1 fi log_end_msg 0 # See end of https://www.kernel.org/doc/Documentation/filesystems/autofs4.txt # autofs mount points need to be made shared else they can interact # badly with the use of namespaces. log_action_begin_msg "Making automount roots shared" for mnt in $(ypcat -k auto.master | cut -f1 -d' ') ; do log_action_cont_msg " $mnt" mount --make-shared $mnt done log_end_msg 0 return 0 } stop() { log_action_begin_msg "Stopping $PROG" if ! start_stop_autofs --stop --retry 5 --oknodo --quiet ; then log_action_end_msg 1 return 1 fi log_end_msg 0 return 0 } reload() { log_action_begin_msg "Reloading $PROG maps" if ! start_stop_autofs --stop --signal=HUP --quiet then log_action_end_msg 1 "$PROG not running" return 1 fi log_action_end_msg 0 return 0 } forcestart() { OPTIONS="$OPTIONS --force" start } case "$1" in start|forcestart|stop|reload) $1 ;; restart|force-reload) stop start ;; forcerestart) stop forcestart ;; status) status_of_proc -p $PIDFILE $DAEMON $PROG ;; *) echo "Usage: $0 {start|forcestart|stop|restart|forcerestart|reload|force-reload|status}" exit 1 ;; esac -- debconf information: autofs/upgrade-from-broken-version:
