Public bug reported: $ apt-show-versions multipath-tools multipath-tools:amd64/vivid 0.4.9-3ubuntu12 uptodate
Reproduce: Mount an image from a path longer than 63 chars succeeds: $ sudo kpartx -av asfd1asdf2asdf3asdf4asdf5asdf6asfd7asdf8asdf9asf10asdf11asdf12asdf13/disk.img add map loop0p1 (252:0): 0 409600 linear /dev/loop0 2048 add map loop0p2 (252:1): 0 2 linear /dev/loop0 411648 add map loop0p5 : 0 819200 linear /dev/loop0 413696 add map loop0p6 : 0 819200 linear /dev/loop0 1234944 add map loop0p7 : 0 819200 linear /dev/loop0 2056192 add map loop0p8 : 0 1316864 linear /dev/loop0 2877440 but dismounting fails: $ sudo kpartx -dv asfd1asdf2asdf3asdf4asdf5asdf6asfd7asdf8asdf9asf10asdf11asdf12asdf13/disk.img strace shows that the parameter on the dismount appears to get cut at 63 chars: ioctl(3, DM_LIST_VERSIONS, 0x15b89b0) = 0 stat("asfd1asdf2asdf3asdf4asdf5asdf6asfd7asdf8asdf9asf10asdf11asdf12asdf13/disk.img", {st_mode=S_IFREG|0644, st_size=2147483648, ...}) = 0 stat("/dev/loop0", {st_mode=S_IFBLK|0660, st_rdev=makedev(7, 0), ...}) = 0 open("/dev/loop0", O_RDONLY) = 4 ioctl(4, LOOP_GET_STATUS, {number=0, offset=0, flags=0, name="asfd1asdf2asdf3asdf4asdf5asdf6asfd7asdf8asdf9asf10asdf11asdf12a", ...}) = 0 close(4) = 0 stat("/dev/loop1", {st_mode=S_IFBLK|0660, st_rdev=makedev(7, 1), ...}) = 0 open("/dev/loop1", O_RDONLY) = 4 ioctl(4, LOOP_GET_STATUS, {number=0, offset=0, flags=0, name="asfd1asdf2asdf3asdf4asdf5asdf6asfd7asdf8asdf9asf10asdf11asdf12a", ...}) = -1 ENXIO (No such device or address) if the path is 63 chars or less, the dismount also succeeds. This is quickly becomes an issue if you want to use full disk paths in your shell scripts. ** Affects: multipath-tools (Ubuntu) Importance: Undecided Status: New ** Tags: kpartx -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1469143 Title: kpartx -d fails with image paths longer than 63 characters To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/multipath-tools/+bug/1469143/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs