[libvirt] CreateMachine: Input/output error
Richard Weinberger
richard at nod.at
Fri Sep 26 09:54:09 UTC 2014
Chen,
Am 26.09.2014 11:49, schrieb Chen, Hanxiao:
> Hi Richard,
>
>> -----Original Message-----
>> From: Richard Weinberger [mailto:richard at nod.at]
>> Sent: Friday, September 26, 2014 4:59 PM
>> To: Chen, Hanxiao/陈 晗霄; Richard Weinberger; libvir-list at redhat.com
>> Subject: Re: [libvirt] CreateMachine: Input/output error
>>
>> Chen,
>>
>> Am 26.09.2014 10:23, schrieb Chen, Hanxiao:
>>>> Has anyone else seen this kind of issue?
>>>> I'm currently a bit puzzled where to look for the root cause.
>>>> Maybe it is related to dbus.
>>>
>>> Could you share your XML config?
>>> Guess it's something with systemd.
>>
>> There you go:
>> <domain type='lxc'>
>> <name>c_secret_name</name>
>> <memory>524288</memory>
>> <os>
>> <type>exe</type>
>> <init>/sbin/init</init>
>> </os>
>> <idmap>
>> <!-- here be dragons, the mapping is non-linear -->
>> <uid start='0' target='101000' count='998'/>
>> <gid start='0' target='101000' count='998'/>
>> <uid start='65533' target='101998' count='2'/>
>> <gid start='65533' target='101998' count='2'/>
>> </idmap>
>> <devices>
>> <console type='pty'/>
>> <filesystem type='mount'>
>> <source dir='/srv/container0/secret_name/rootfs'/>
>> <target dir='/'/>
>> </filesystem>
>> <interface type='bridge'>
>> <source bridge='br0'/>
>> <mac address='4a:19:0a:XX:XX:XX'/>
>> </interface>
>> </devices>
>> </domain>
>>
>> Nothing special. My host is openSUSE 13.1.
>
> On fedora20 with systemd 208, upstream libvirt,
> I could reproduce it.
We're also on systemd 208.
> It not happened 100%,
Here it happened only twice within months.
Always in production, never on my testbed. :(
> but once it happened, the container could not be started anymore.
> One workaround is to undefine it and change another name.
> With a quick look, I did not find out a explanations.
Hmm, maybe systemd-machined did not cleanup everything upon
container exit.
Thanks,
//richard
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