This is indeed the breakage in supermin, as suggested by Richard and others here.
The following mainline kernel commit in 4.13 broke supermin's symlink handling: commit 407cd7fb83c0ebabb490190e673d8c71ee7df97e Author: Tahsin Erdogan <tah...@google.com> Date: Tue Jul 4 00:11:21 2017 -0400 "ext4: change fast symlink test to not rely on i_blocks" This breaks the supermin v5.1.14 package (Ubuntu xenial version: 5.1.14-2ubuntu1) which will not work with any kernel v4.13 based or later. A fix for this is available in v5.1.18 and later releases of the Debian supermin. The current Ubuntu devel release (Bionic) has already picked up the v5.1.19 version of supermin. Reproduction ================ This affects any user of supermin functionality, and manifests in multiple ways. Along with this bug description breakage of libguestfs-test-tool, the bug also can be reproduced with other tools. e.g.: # guestfish --rw -a /var/lib/libvirt/images/ubuntu-16.04-server-cloudimg-amd64-disk1.img Welcome to guestfish, the guest filesystem shell for editing virtual machine filesystems and disk images. Type: 'help' for help on commands 'man' to read the manual 'quit' to quit the shell ><fs> run ◓ 50% ⟦▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒════════════════════════════════════════════════⟧ --:-- libguestfs: error: appliance closed the connection unexpectedly. This usually means the libguestfs appliance crashed. Do: export LIBGUESTFS_DEBUG=1 LIBGUESTFS_TRACE=1 and run the command again. For further information, read: http://libguestfs.org/guestfs-faq.1.html#debugging-libguestfs You can also run 'libguestfs-test-tool' and post the *complete* output into a bug report or message to the libguestfs mailing list. libguestfs: error: guestfs_launch failed. This usually means the libguestfs appliance failed to start or crashed. Do: export LIBGUESTFS_DEBUG=1 LIBGUESTFS_TRACE=1 and run the command again. For further information, read: http://libguestfs.org/guestfs-faq.1.html#debugging-libguestfs You can also run 'libguestfs-test-tool' and post the *complete* output into a bug report or message to the libguestfs mailing list. ><fs> Fix testing =================== I have backported the fix to 5.1.14-2ubuntu1 and tested various utils successfully. # guestfish --rw -a /var/lib/libvirt/images/ubuntu-16.04-server- cloudimg-amd64-disk1.img Welcome to guestfish, the guest filesystem shell for editing virtual machine filesystems and disk images. Type: 'help' for help on commands 'man' to read the manual 'quit' to quit the shell ><fs> run run 100% ⟦▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒⟧ 00:00 ><fs> # libguestfs-test-tool ... commandrvf: stdout=n stderr=y flags=0x0 commandrvf: umount /sysroot fsync /dev/sda guestfsd: main_loop: proc 282 (internal_autosync) took 0.01 seconds libguestfs: sending SIGTERM to process 3526 libguestfs: closing guestfs handle 0x117c2d0 (state 0) libguestfs: command: run: rm libguestfs: command: run: \ -rf /tmp/libguestfsohagIE ===== TEST FINISHED OK ===== Current workarounds and backport =================================== An updated supermin package for xenial with the fix backported will allow the libguestfs-tools & supermin to work with any kernels, including v4.13 and later. In the meanwhile, the workaround suggested in comment 13 by Oliver above which enables the use of kernels earlier than v4.13 should work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1743300 Title: libguestfs not work anymore with 4.13.0-26-generic #29~16.04.2-Ubuntu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/supermin/+bug/1743300/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
