Package: mount Version: 2.33.1-0.1 Severity: important There are multiple issues reflected in this report:
1) That mount failed to properly mount a filesystem; 2) That it incorrectly said it had mounted it; 3) That running systemctl daemon-reload fixed the issue; 4) That neither the mount nor the fstab manpages mentioned this interaction I was recently migrating a server from LVM to md-raid. In the process, I made a new filesystem on /dev/md0, mounted it on /mnt, and copied /boot over to it on /mnt. I then unmounted /mnt and /boot, edited fstab to reflect the new location, and tried to mount it on /boot. mount -v /boot responded: mount: /dev/md0 mounted on /boot. However, /boot was still empty. df didn't show that it was mounted there, neither did /proc/mounts. These commands all produced similar results: mount -v /dev/md0 /boot mount -t ext4 /dev/md0 /boot However, this worked fine: mount -v /dev/md0 /mnt In other words, I could mount /dev/md0 at any location on the system EXCEPT /boot. Any attempt to mount something at /boot would indicate success but fail. Eventually, on a lark, I tried systemctl daemon-reload. After that, it mounted fine. Related information: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=907536 requests documentation of the systemctl daemon-reload in fstab, but does not address the incorrect behavior of mount. https://github.com/systemd/systemd/issues/7291 states that the "raw util-linux commands still honour /etc/fstab directly", but that does not appear to be the case. Thanks, John -- System Information: Debian Release: 10.4 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-9-amd64 (SMP w/4 CPU cores) Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages mount depends on: ii libblkid1 2.33.1-0.1 ii libc6 2.28-10 ii libmount1 2.33.1-0.1 ii libselinux1 2.8-1+b1 ii libsmartcols1 2.33.1-0.1 ii util-linux 2.33.1-0.1 mount recommends no packages. Versions of packages mount suggests: ii nfs-common 1:1.3.4-2.5 -- no debconf information
