Package: mount Version: 2.32-0.1 Severity: normal If I request losetup to detach from a loop device and it cannot be detached, I would expect it to notify me accordingly. However:
# losetup --list NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC /dev/loop1 0 0 1 0 /home/gwolf/vcs/raspi3-image-spec/raspi3.img (deleted) 0 512 # if losetup --detach /dev/loop1 ; then echo SUCCESS; else echo FAIL; fi SUCCESS # losetup --list NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC /dev/loop1 0 0 1 0 /home/gwolf/vcs/raspi3-image-spec/raspi3.img (deleted) 0 512 When requesting debug information, it seems losetup actually believes the loopback was dropped - but it is false: # LOOPDEV_DEBUG=all losetup --detach /dev/loop1 9932: loopdev: CXT: [0x7ffeaa764d60]: initialize context 9932: loopdev: CXT: [0x7ffeaa764d60]: init: ignore ioctls 9932: loopdev: CXT: [0x7ffeaa764d60]: init: loop-control detected 9932: loopdev: CXT: [0x7ffeaa764d60]: /dev/loop1 name assigned 9932: loopdev: CXT: [0x7ffeaa764d60]: open /dev/loop1 [ro]: Success 9932: loopdev: CXT: [0x7ffeaa764d60]: device removed 9932: loopdev: CXT: [0x7ffeaa764d60]: de-initialize 9932: loopdev: CXT: [0x7ffeaa764d60]: closing old open fd 9932: loopdev: ITER: [0x7ffeaa764f18]: de-initialize # losetup --list NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO LOG-SEC /dev/loop1 0 0 1 0 /home/gwolf/vcs/raspi3-image-spec/raspi3.img (deleted) 0 512 Thank you very much for looking into this! -- System Information: Debian Release: buster/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 4.15.0-2-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (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 2.32-0.1 ii libc6 2.27-3 ii libmount1 2.32-0.1 ii libselinux1 2.8-1 ii libsmartcols1 2.32-0.1 ii util-linux 2.32-0.1 mount recommends no packages. Versions of packages mount suggests: pn nfs-common <none> -- no debconf information