I have been having quite some trouble getting nspawn give me a shell
with proper job control in a CentOS 6.6 guest. The problem appears to be
that the nodes representing the std{out,err,in} fds in /proc are
malformed,
$ sudo strace -f -obad systemd-nspawn -D$(realpath centos6.5-amd64)
Spawning container centos6.5-amd64 on /home/ben/vm/centos6.5-amd64.
Press ^] three times within 1s to kill container.
Failed to create directory /home/ben/vm/centos6.5-amd64/sys/fs/selinux:
Read-only file system
Failed to create directory /home/ben/vm/centos6.5-amd64/sys/fs/selinux:
Read-only file system
/etc/localtime is not a symlink, not updating container timezone.
-bash: cannot set terminal process group (-1): Inappropriate ioctl for
device
-bash: no job control in this shell
-bash-4.1# ls -lh /proc/self/fd
total 0
lrwx------ 1 root root 64 Jul 17 04:14 0 -> /7
lrwx------ 1 root root 64 Jul 17 04:14 1 -> /7
lrwx------ 1 root root 64 Jul 17 04:14 2 -> /7
lr-x------ 1 root root 64 Jul 17 04:14 3 -> /proc/13/fd
Note that fds 0, 1, and 2 all point to a non-existent /7 file. I believe
this should instead point to /dev/pts/7, although strangely this does
not exist either despite /dev/pts being mounted. I am running a very
recent (4.1) kernel.
Am I correct in assuming that this is not expected behavior? What am I
missing here?
Cheers,
- Ben
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