Bug#829496: kpartx -d ( detach ) option silently fails

[Emmanuel Kasper]

Package: kpartx
Version: 0.6.1-3
Severity: normal

Hi

Since the 0.6.1-* version of kpartx, the '-d' option does not work anymore.

Simple test case:

# add loopdevice and partition mappings, freedos.raw is here a disk image
kpartx -av freedos.raw
add map loop0p1 (253:0): 0 262017 linear 7:0 63

# ask kpartx to detach the loop device
kpartx -d freedos.raw

# but the loop device is still there
file --special-files --dereference /dev/loop0 
/dev/loop0: DOS/MBR boot sector; partition 1 : ID=0xe, active, start-CHS (0x0,1,1), end-CHS (0x13,15,63), startsector 63, 262017 sectors

losetup --list 
NAME       SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE                                  DIO
/dev/loop0         0      0         0  0 /home/manu/Projects/emul/i386/kvm/freedos.raw

fortunately it is possible to detach manually the loop device with losetup --detach /dev/loop0


-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.5.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages kpartx depends on:
ii  dmsetup             2:1.02.124-1
ii  libc6               2.22-11
ii  libdevmapper1.02.1  2:1.02.124-1
ii  udev                230-2

kpartx recommends no packages.

kpartx suggests no packages.

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