Re: [libvirt] [PATCH v3 00/12] Add user namespace support for libvirt lxc
Am 10.06.2013 21:17, schrieb Richard Weinberger:
Hi!
Am 04.06.2013 13:03, schrieb Daniel P. Berrange:
>> It's still under review. needs some ACK.
>> If you can help to test or ACK this patchset, it will be very helpful. :)
>>
>> Actually, I just want to ping...
>
> I've been away on holiday for 2 weeks, so not had a chance to review
> it yet. I'll get to it this week. I hope we'll get this in the 1.0.6
> release this month.
Finally I've found some time to test version 4 of the userns patch set.
But I'm unable to create a container.
---cut---
linux:~ # LANG=C /opt/libvirt/bin/virsh -c lxc:/// create c1.conf
error: Failed to create domain from c1.conf
error: Interner Fehler guest failed to start: PATH=/bin:/sbin TERM=linux
container=lxc-libvirt container_uuid=3f86c48b-b027-4838-ba17-6202a1d7398b
LIBVIRT_LXC_UUID=3f86c48b-b027-4838-ba17-6202a1d7398b LIBVIRT_LXC_NAME=c1 /bin/bash
error receiving signal from container: Input/output error
---cut---
lxcContainerWaitForContinue() in src/lxc/lxc_controller.c fails with EIO.
Maybe because the clone()'ed child dies and the file descriptor used for
synchronization becomes invalid.
Here my container config:
---cut---
<domain type='lxc'>
<name>c1</name>
<memory>102400</memory>
<os>
<type>exe</type>
<init>/bin/bash</init>
</os>
<idmap>
<uid start='0' target='100000' count='100000'/>
<gid start='0' target='100000' count='100000'/>
</idmap>
<devices>
<console type='pty'/>
<filesystem type='mount'>
<source dir='/root/c1/rootfs'/>
<target dir='/'/>
</filesystem>
</devices>
</domain>
---cut---
Any ideas how to debug this further?
This is Linux 3.9.0 with all namespaces enabled.
Whoops, forgot to add the libvirtd debug output:
---cut---
2013-06-10 19:41:24.661+0000: 29211: debug : virCommandRunAsync:2241 : About to run
PATH=/usr/lib64/mpi/gcc/openmpi/bin:/sbin:/usr/sbin:/usr/local/sbin:/root/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/usr/games
LIBVIRT_DEBUG=1 LIBVIRT_LOG_OUTPUTS=1:stderr
/opt/libvirt/lib/libvirt_lxc --name c1 --console 20 --security=none --handshake 23
--background
2013-06-10 19:41:24.663+0000: 29211: debug : virFileClose:90 : Closed fd 24
2013-06-10 19:41:24.663+0000: 29211: debug : virCommandRunAsync:2246 : Command result 0,
with PID 29303
2013-06-10 19:41:24.664+0000: 29303: debug : virFileClose:90 : Closed fd 3
2013-06-10 19:41:24.665+0000: 29303: debug : virFileClose:90 : Closed fd 4
2013-06-10 19:41:24.666+0000: 29303: debug : virFileClose:90 : Closed fd 5
2013-06-10 19:41:24.666+0000: 29303: debug : virFileClose:90 : Closed fd 6
2013-06-10 19:41:24.667+0000: 29303: debug : virFileClose:90 : Closed fd 7
2013-06-10 19:41:24.667+0000: 29303: debug : virFileClose:90 : Closed fd 8
2013-06-10 19:41:24.668+0000: 29303: debug : virFileClose:90 : Closed fd 9
2013-06-10 19:41:24.668+0000: 29303: debug : virFileClose:90 : Closed fd 10
2013-06-10 19:41:24.668+0000: 29303: debug : virFileClose:90 : Closed fd 11
2013-06-10 19:41:24.668+0000: 29303: debug : virFileClose:90 : Closed fd 12
2013-06-10 19:41:24.668+0000: 29303: debug : virFileClose:90 : Closed fd 13
2013-06-10 19:41:24.669+0000: 29303: debug : virFileClose:90 : Closed fd 14
2013-06-10 19:41:24.669+0000: 29303: debug : virFileClose:90 : Closed fd 15
2013-06-10 19:41:24.670+0000: 29303: debug : virFileClose:90 : Closed fd 16
2013-06-10 19:41:24.670+0000: 29303: debug : virFileClose:90 : Closed fd 17
2013-06-10 19:41:24.670+0000: 29303: debug : virFileClose:90 : Closed fd 18
2013-06-10 19:41:24.671+0000: 29303: debug : virFileClose:90 : Closed fd 19
2013-06-10 19:41:24.671+0000: 29303: debug : virFileClose:90 : Closed fd 22
2013-06-10 19:41:24.790+0000: 29211: debug : virCommandRun:2115 : Result status 0, stdout:
'(null)' stderr: '(null)'
---cut---
Looks like libvirt_lxc was executed and died silently.
Thanks,
//richard