[lxc-devel] lxc-start hangs when starting a new container

[Matty]

On Wed, Jul 1, 2009 at 4:12 AM, Daniel Lezcano<dlezcano at fr.ibm.com> wrote:
> Matty wrote:
>>
>> I have an lxc container that keeps hanging when I run 'lxc-start -n
>> <GUEST NAME>'. When I strace lxc-start, I see the following:
>>
>> $ strace lxc-start -n test
>>   ..............
>> open("/usr/local/var/lib/lxc/test/state", O_WRONLY) = 13
>> flock(13, LOCK_EX)                      = 0
>> ftruncate(13, 0)                        = 0
>> write(13, "RUNNING"..., 7)              = 7
>> close(13)                               = 0
>> socket(PF_FILE, SOCK_DGRAM, 0)          = 13
>> sendto(13,
>> "\0\0\0\0test\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"...,
>> 4104, 0, {sa_family=AF_FILE, path=@"lxc-monitor"...}, 110) = -1
>> ECONNREFUSED (Connection refused)
>> close(13)                               = 0
>> close(13)                               = -1 EBADF (Bad file descriptor)
>> close(14)                               = 0
>> socket(PF_FILE, SOCK_STREAM, 0)         = 13
>> bind(13, {sa_family=AF_FILE, path=@"test"...}, 110) = 0
>> listen(13, 100)                         = 0
>> fcntl(13, F_SETFD, FD_CLOEXEC)          = 0
>> epoll_create(1)                         = 14
>> epoll_ctl(14, EPOLL_CTL_ADD, 12, {EPOLLIN, {u32=17707440, u64=17707440}})
>> = 0
>> epoll_ctl(14, EPOLL_CTL_ADD, 13, {EPOLLIN, {u32=17707504, u64=17707504}})
>> = 0
>>
>> I starting the container with 2.6.[29-31pre] kernels and with the
>> latest lxc code, and they all appear to exhibit this behavior. Has
>> anyone seen this before? Any idea what the lxc-monitor socket is used
>> for?

> can you give more information about the container itself ?

Sure thing. This is a Fedora 11 container I created with lxc-fedora.
Are there specific details you're after? If so, I will be glad to send
them to you.

> What is the configuration ?

I used the defaults provided by lxc-fedora, though I disabled udev
(commented out the udev line in rc.sysinit) to allow the container to
boot.

> Is it an application or a distro you are trying to launch ?

This is a distribution.

> Can you strace with the "-f" option, please ?

Sure thing. I attached the full strace output to this e-mail as strace.txt.gz.

Thanks for the reply,
- Ryan
--
http://prefetch.net
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