[Pkg-zfsonlinux-devel] Bug#962192: zfsutils-linux: zfs import task tries to recursivly import pools from zvols

[Albert Dengg]

Package: zfsutils-linux
Version: 0.8.4-1~bpo10+1
Severity: important

Dear Maintainer,

I'm currently using zvols for kvm VMs.
when i setup a FreeBSD VM with zfs root and a ubuntu vm with zfs root (yes
i know zfs on zfs creates performance problems, it was for testing something)
my system failed the pool import stage on the next reboot because it found
the pools on the zvols which had unsuported feature flags enabled, resulting in an
unbootable system (i currently have my root partion on zfs).

i would not have expected it to try to import zpools on zvols...

(i fixed it by removing the zvol since the tests where more or less
finished anyway and the vm can easyly be recreated in this case, however
it still was quite suprising to have the system fail to boot).

regards,
albert

-- System Information:
Debian Release: 10.4
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.5.0-0.bpo.2-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages zfsutils-linux depends on:
ii  libblkid1        2.33.1-0.1
ii  libc6            2.28-10
ii  libnvpair1linux  0.8.4-1~bpo10+1
ii  libudev1         241-7~deb10u4
ii  libuuid1         2.33.1-0.1
ii  libuutil1linux   0.8.4-1~bpo10+1
ii  libzfs2linux     0.8.4-1~bpo10+1
ii  libzpool2linux   0.8.4-1~bpo10+1
ii  python3          3.7.3-1
ii  zlib1g           1:1.2.11.dfsg-1

Versions of packages zfsutils-linux recommends:
ii  lsb-base                10.2019051400
ii  zfs-dkms [zfs-modules]  0.8.4-1~bpo10+1
ii  zfs-zed                 0.8.4-1~bpo10+1

Versions of packages zfsutils-linux suggests:
pn  nfs-kernel-server  <none>
pn  samba-common-bin   <none>
ii  zfs-initramfs      0.8.4-1~bpo10+1

-- Configuration Files:
/etc/sudoers.d/zfs [Errno 13] Permission denied: '/etc/sudoers.d/zfs'

-- no debconf information