[Lxc-users] Problems on Ubuntu 11.04 (strace included)

[adeadhat]

My host system is Ubuntu 11.04

root at ubuntu1:~# lxc-monitor -n deb1
'deb1' changed state to [STARTING]
'deb1' changed state to [RUNNING]

root at ubuntu1:~# lxc-console -n deb1

Type <Ctrl+a q> to exit the console



loginsdfsdfsdf^C^C^C


^ Here the virtual console is unresponsive. Here is the strace output 
from my lx-console session:

setsockopt(15, SOL_SOCKET, SO_PASSCRED, [1], 4) = 0
epoll_ctl(13, EPOLL_CTL_ADD, 15, {EPOLLIN, {u32=139381800, 
u64=139381800}}) = 0
epoll_wait(13, {{EPOLLIN, {u32=139381800, u64=139381800}}}, 10, -1) = 1
recvmsg(15, {msg_name(0)=NULL, msg_iov(1)=[{"\0\0\0\0\377\377\377\377", 
8}], msg_controllen=24, {cmsg_len=24, cmsg_level=SOL_SOCKET, 
cmsg_type=SCM_CREDENTIALS{pid=30535, uid=0, gid=0}}, msg_flags=0}, 0) = 8
sendmsg(15, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0", 4}], 
msg_controllen=16, {cmsg_len=16, cmsg_level=SOL_SOCKET, 
cmsg_type=SCM_RIGHTS, {4}}, msg_flags=0}, 0) = 4
epoll_wait(13,


When I lxc-console strace shows the process is opening a socket.

recvmsg(15, {msg_name(0)=NULL, msg_iov(1)=[{"\0\0\0\0\377\377\377\377", 
8}], msg_controllen=24, {cmsg_len=24, cmsg_level=SOL_SOCKET, 
cmsg_type=SCM_CREDENTIALS{pid=30645, uid=0, gid=0}}, msg_flags=0}, 0) = 8
sendmsg(15, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0", 4}], 
msg_controllen=16, {cmsg_len=16, cmsg_level=SOL_SOCKET, 
cmsg_type=SCM_RIGHTS, {4}}, msg_flags=0}, 0) = 4
epoll_wait(13, {{EPOLLIN|EPOLLHUP, {u32=139381800, 
u64=13222343338143697960}}}, 10, -1) = 1
recvmsg(15, {msg_name(0)=NULL, msg_iov(1)=[{"\0\0\0\0\377\377\377\377", 
8}], msg_controllen=24, {cmsg_len=24, cmsg_level=SOL_SOCKET, 
cmsg_type=SCM_CREDENTIALS{pid=0, uid=0, gid=0}}, msg_flags=0}, 0) = 0
epoll_ctl(13, EPOLL_CTL_DEL, 15, NULL)  = 0

However any data I type and enter in, the process does nothing. Upon 
issuing a CtrlA+q strace shoes the process performs a close():

epoll_ctl(13, EPOLL_CTL_DEL, 15, NULL)  = 0
close(15)                               = 0

So it looks like the problem is a strange one. Here is some helpful 
information.

root at ubuntu1:~# cat /etc/fstab | grep -i cgroup
cgroup  /dev/cgroup  cgroup  cpuacct,memory,devices,cpu,freezer,blkio  0  0

I'm using the lxc-debian scripts contained here: 
git://git.nigel.mcnie.name/git/lxc-debian.git

Overall just odd behavior - it also aborts startup if lxc-monitor isn't 
running.