Package: autofs Version: 5.1.2-4 Severity: normal Dear Maintainer,
for many years, I started automount with -t 86400000, and by now had forgotten what this was for (or whether I reported the problem). Today, I removed it and got reminded what it was supposed to work around. Effectively, when automount expires mountpoints, specifically symlink bind mounts, it will unmount the target directory. Example, with browse mode being on: auto.master: /fs /etc/auto.fs symlink -vers=4,intr,rsize=1048576,wsize=1048576,tcp,port=2049,fsc auto.fs: bp -fstype=bind :/bp With this setup, doing ls /fs show a bp directory. ls /fs/bp will replace it by a symlink to /bp, then killall -USR1 automount will remove /fs/bp (which I think it shouldn't when in browse mode, bug #1) and ALSO unmount /bp (bug #2, the real problem). I guess automount simply calls umount on the symlink and then unlinks it. killall -HUP automount will bring back the ghosted /fs/bp entry. alternatively, ls /fs/bp will bring bakc the symolink, butg of course the target directory stays unmounted. I think I never reported it because this behaviour was with my own patched copy, but it is reproducible with the pristine version. -- System Information: Debian Release: 10.2 APT prefers stable APT policy: (990, 'stable'), (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'stable-updates'), (500, 'stable-debug'), (500, 'oldstable-updates'), (500, 'oldstable-debug'), (500, 'unstable'), (500, 'testing'), (500, 'oldstable'), (1, 'experimental-debug'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386, x32 Kernel: Linux 5.4.15-050415-generic (SMP w/8 CPU cores) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_DK.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8), LANGUAGE=en_DK.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages autofs depends on: ii libc6 2.28-10 ii libxml2 2.9.4+dfsg1-7+b3 ii ucf 3.0038+nmu1 Versions of packages autofs recommends: ii e2fsprogs 1.45.5-2 ii kmod 26-1 ii nfs-common 1:1.3.4-2.5 autofs suggests no packages. -- debconf information excluded
