[lxc-users] lxc stateful snapshot fails with "Pre dump script failed with 32512"
Alex Kedrowitsch
xander.ked at gmail.com
Thu Aug 4 17:08:28 UTC 2016
I had initially included the PPA for stable releases, but removed it, then
removed and reinstalled the lxd package (I'm assuming your referring to the
LXD package when you mention liblxc; sorry, I'm playing terminology
catch-up) to see if that was making me hold on to an old package version,
but issue remains.
Is the ebb088e commit included in the daily build PPA?
On Thu, Aug 4, 2016 at 11:38 AM, Alex Kedrowitsch <xander.ked at gmail.com>
wrote:
> Tycho,
>
> I hope I don't botch this thread up too much, I had set emails from this list to digest mode and had to manually copy the content into a new email...
>
> No, I'm not using a custom liblxc build - I have the LXC daily PPA added and am assuming that's where it's pulling from... Not to say I may have dome something crazy in my attempts to troubleshoot. Is there a specific package I can reinstall to ensure I'm getting the appropriate library?
>
>
> alex at osboxesDesktop:~$ apt-cache madison liblxc1
> liblxc1 | 2.0.3+master~20160729-2343-0ubuntu1~xenial | http://ppa.launchpad.net/ubuntu-lxc/daily/ubuntu xenial/main amd64 Packages
> liblxc1 | 2.0.3-0ubuntu3~ubuntu16.04.1~ppa1 | http://ppa.launchpad.net/ubuntu-lxc/lxd-git-master/ubuntu xenial/main amd64 Packages
> liblxc1 | 2.0.3-0ubuntu3~ubuntu16.04.1~ppa1 | http://ppa.launchpad.net/ubuntu-lxc/stable/ubuntu xenial/main amd64 Packages
> liblxc1 | 2.0.3-0ubuntu1~ubuntu16.04.1 | http://gb.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
> liblxc1 | 2.0.0-0ubuntu2 | http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
>
>
> Hi Alex,
>
> On Wed, Aug 03, 2016 at 05:44:56PM -0400, Alex Kedrowitsch wrote:
> >* Hi All,
> *> >* I'm new to the Linux container scene and am having issues with making
> *>* stateful container snapshots. My ultimate goal is to get "lxc move" to
> *>* work, but that fails with the same error as when I try "lxc snapshot <>
> *>* --stateful", so I'm starting with the lowest common denominator.
> *> >* Environment:
> *>* VM running Ubuntu 16.04, Kernel 4.4.0-31-generic
> *>* LXD version 2.0.3
> *>* CRIU version 2.0 (no special commits)
> *> >* I am following the steps outlined here: (
> *>* http://insights.ubuntu.com/2016/04/25/lxd-2-0-live-migration-912/ <http://insights.ubuntu.com/2016/04/25/lxd-2-0-live-migration-912/>) as well
> *>* as trying to match the requirements here: (
> *>* https://insights.ubuntu.com/2015/05/06/live-migration-in-lxd/ <https://insights.ubuntu.com/2015/05/06/live-migration-in-lxd/>) (this second
> *>* article is invaluable, but would be great if it was updated for the latest
> *>* changes to LXD, like not including the step to remove lxcfs, which broke my
> *>* installation of LXD when I did.)
> *
> Good point, I should probably write an updated post :). Anyway,
> stgraber's post here:
> https://www.stgraber.org/2016/04/25/lxd-2-0-live-migration-912/
>
> is pretty recent (i.e. migration should be pretty "no frills" right
> now).
>
> >* I was previously able to make stateful snapshots without error, but was
> *>* unable to restore them; however, today I am unable to even make the
> *>* snapshots. Stateless snapshots can be made without error.
> *> >* Appears to be similar to this issue (https://github.com/lxc/lxd/issues/2110 <https://github.com/lxc/lxd/issues/2110>),
> *>* where stgraber believes it's a bug with CRIU serializing sockets, but I was
> *>* unable to find the bug report on Launchpad.
> *> >* Here are my logs. Thanks for the help!
> *> >* Terminal Commands/output:
> *>* alex at osboxesDesktop <http://lists.linuxcontainers.org/listinfo/lxc-users>:~$ lxc snapshot stringhalty-judie snap2 --stateful
> *>* error: snapshot dump failed
> *>* (00.041465) Error (action-scripts.c:60): One of more action scripts failed
> *>* (00.041478) Error (cr-dump.c:1621): Pre dump script failed with 32512!
> *
> Are you using a custom built liblxc? Looks like you might be missing
> ebb088e115fd81f86602af8a386ee41470c71a73.
>
> Tycho
>
> >* Container info:
> *>* alex at osboxesDesktop <http://lists.linuxcontainers.org/listinfo/lxc-users>:~$ lxc info stringhalty-judie
> *>* Name: stringhalty-judie
> *>* Architecture: x86_64
> *>* Created: 2016/08/03 20:07 UTC
> *>* Status: Running
> *>* Type: persistent
> *>* Profiles: default
> *>* Pid: 9665
> *>* Ips:
> *>* eth0: inet 10.29.26.131 vethBI73UQ
> *>* eth0: inet6 fe80::216:3eff:fe38:4351 vethBI73UQ
> *>* lo: inet 127.0.0.1
> *>* lo: inet6 ::1
> *>* Resources:
> *>* Processes: 26
> *>* Memory usage:
> *>* Memory (current): 41.85MB
> *>* Memory (peak): 179.00MB
> *>* Network usage:
> *>* lo:
> *>* Bytes received: 264 bytes
> *>* Bytes sent: 264 bytes
> *>* Packets received: 4
> *>* Packets sent: 4
> *>* eth0:
> *>* Bytes received: 6.60kB
> *>* Bytes sent: 2.17kB
> *>* Packets received: 43
> *>* Packets sent: 17
> *>* Snapshots:
> *>* snap1 (taken at 2016/08/03 20:49 UTC) (stateless)
> *> >* snapshot_dump_###.log:
> *>* (00.000023) Probing sock diag modules
> *>* (00.000053) Done probing
> *>* (00.028278) ========================================
> *>* (00.028291) Dumping processes (pid: 9665)
> *>* (00.028292) ========================================
> *>* (00.028293) Running pre-dump scripts
> *>* (00.028306) [@ÑÙ È]
> *>* (00.041465) Error (action-scripts.c:60): One of more action scripts failed
> *>* (00.041478) Error (cr-dump.c:1621): Pre dump script failed with 32512!
> *> > >* Excerpt from lxc.log:
> *>* lxc 20160803171813.590 DEBUG lxc_commands -
> *>* commands.c:lxc_cmd_get_state:579 - 'stringhalty-judie' is in 'RUNNING' state
> *>* lxc 20160803171819.956 INFO lxc_confile -
> *>* confile.c:config_idmap:1520 - read uid map: type u nsid 0 hostid 231072
> *>* range 65536
> *>* lxc 20160803171819.956 INFO lxc_confile -
> *>* confile.c:config_idmap:1520 - read uid map: type g nsid 0 hostid 231072
> *>* range 65536
> *>* lxc 20160803171819.957 DEBUG lxc_commands -
> *>* commands.c:lxc_cmd_handler:893 - peer has disconnected
> *>* lxc 20160803171819.957 DEBUG lxc_commands -
> *>* commands.c:lxc_cmd_handler:893 - peer has disconnected
> *>* lxc 20160803171819.957 DEBUG lxc_commands -
> *>* commands.c:lxc_cmd_get_state:579 - 'stringhalty-judie' is in 'RUNNING' state
> *>* lxc 20160803171819.963 DEBUG lxc_commands -
> *>* commands.c:lxc_cmd_handler:893 - peer has disconnected
> *>* lxc 20160803171819.975 DEBUG lxc_commands -
> *>* commands.c:lxc_cmd_handler:893 - peer has disconnected
> *>* lxc 20160803171819.975 INFO lxc_criu - criu.c:exec_criu:422
> *>* - execing: /usr/sbin/criu dump --tcp-established --file-locks --link-remap
> *>* --manage-cgroups=full --ext-mount-map auto --enable-external-sharing
> *>* --enable-external-masters --enable-fs hugetlbfs --enable-fs tracefs -D
> *>* /var/lib/lxd/containers/stringhalty-judie/state -o
> *>* /var/lib/lxd/containers/stringhalty-judie/state/dump.log -vvvvvv
> *>* --action-script \D0\D1\DE \C8 -t 9665 --freeze-cgroup
> *>* /sys/fs/cgroup/freezer///lxc/stringhalty-judie --ext-mount-map
> *>* /dev/console:console --external tty[8812:e] --force-irmap --ghost-limit
> *>* 859535847452 --leave-running
> *>* lxc 20160803171819.975 DEBUG lxc_commands -
> *>* commands.c:lxc_cmd_handler:893 - peer has disconnected
> *>* lxc 20160803171820.142 ERROR lxc_criu - criu.c:do_dump:930 -
> *>* dump signaled with 11
> *
> >* _______________________________________________
> *>* lxc-users mailing list
> *>* lxc-users at lists.linuxcontainers.org <http://lists.linuxcontainers.org/listinfo/lxc-users>
> *>* http://lists.linuxcontainers.org/listinfo/lxc-users <http://lists.linuxcontainers.org/listinfo/lxc-users>*
>
>
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