Hi Pavol,

thank you for your help, I really appriciate it.. Seems that lxd did not upgrade - or what do you guess? I do not remember exactly all packages, buw what I know is that the zfs-kernel-modules were upgraded..

So far, I am here:

r...@myrootbox.com ~ $ *uname -a*
Linux myrootbox.com 4.4.0-57-generic #78-Ubuntu SMP Fri Dec 9 23:50:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

r...@myrootbox.com ~ $ *lxc --version*
2.7

r...@myrootbox.com ~ $ *lxd --version*
2.7

r...@myrootbox.com ~ $*lsof | grep /lxd/*
systemd 1 root 44u unix 0xffff8800d912a000 0t0 14622 /var/lib/lxd/unix.socket type=STREAM lxd 2267 root 4w REG 253,2 9401277 390147 /var/log/lxd/lxd.log lxd 2267 root 5u REG 0,38 1353728 15 /lxd/lxd.db lxd 2267 root 6u REG 0,38 1353728 15 /lxd/lxd.db

r...@myrootbox.com ~ $ *apt upgrade -y*
Paketlisten werden gelesen... Fertig
Abhängigkeitsbaum wird aufgebaut.
Statusinformationen werden eingelesen.... Fertig
Paketaktualisierung (Upgrade) wird berechnet... Fertig
Die folgenden Pakete wurden automatisch installiert und werden nicht mehr benötigt:
  linux-headers-4.4.0-47 linux-headers-4.4.0-47-generic
Verwenden Sie »apt autoremove«, um sie zu entfernen.
0 aktualisiert, 0 neu installiert, 0 zu entfernen und 0 nicht aktualisiert.
1 nicht vollständig installiert oder entfernt.
Nach dieser Operation werden 0 B Plattenplatz zusätzlich benutzt.
lxd (2.7-0ubuntu2~ubuntu16.04.1~ppa1) wird eingerichtet ...

Old bridge configuration detected in /etc/default/lxd-bridge, upgrading
Unsetting deprecated profile options
Attempting to kill current lxd-bridge
Bringing down and renaming existing bridge lxdbr0 to lxd-upgrade
Creating a new LXD bridge
*error: The network already exists*
dpkg: Fehler beim Bearbeiten des Paketes lxd (--configure):
Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
Fehler traten auf beim Bearbeiten von:
 lxd
E: Sub-process /usr/bin/dpkg returned an error code (1)


Am 05.01.2017 um 21:33 schrieb Pavol Cupka:
what packages were upgraded, what versions of lxc,lxd are you running, and what kernel versions are you running? what files are open on the affected dataset?

On Thu, Jan 5, 2017 at 9:19 PM, Ingo Baab <i...@baab.de <mailto:i...@baab.de>> wrote:

    Hello List,

    I got some serious issues with my zfs-file-system, after upgrade
    of my ubuntu system.
    "lxc list" reports a status of ERROR and if I try to start a
    container I get:

    r...@myrootbox.com <mailto:r...@myrootbox.com> / $ lxc start
    --debug u16

    DBUG[01-05|21:07:03] Raw response: {"error":"Failed to run: zfs
set mountpoint=none lxd: umount: /lxd/images: target is busy\n (In some cases useful info about processes that\n use
    the device is found by lsof(8) or fuser(1).)\ncannot unmount
    '/lxd/images': umount failed","error_code":500,"type":"error"}


    error: Failed to run: zfs set mountpoint=none lxd: umount:
    /lxd/images: target is busy
            (In some cases useful info about processes that
             use the device is found by lsof(8) or fuser(1).)
    cannot unmount '/lxd/images': umount failed

    Some more output about my problem you can find at:
    https://github.com/lxc/lxd/issues/1990
    <https://github.com/lxc/lxd/issues/1990>

    Help! Any tip or help is highly appriciated!
    kind regards,
    -Ingo

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