[Nix-dev] nixos-container update fails most of the time

[Tinker]

Hi

I am toying a bit with nixos-container. I noticed that most of the
time the update (reload) fails.

nixos-container update web2

I am assuming that I can only reload a container which is started, is
that correct?

I don't have a configuration.nix inside the container, instead I
maintain a container config which I import in my host configuration.

Here is what I get:

# nixos-container update web2
warning: Nix search path entry
‘/var/lib/containers/web2/etc/nixos/configuration.nix’ does not exist,
ignoring
reloading container...
Job for container at web2.service failed. See "systemctl status
container at web2.service" and "journalctl -xe" for details.
/run/current-system/sw/bin/nixos-container: failed to reload container

And journalctl -xe:

ternal systemd[1]: Reloading Container 'web2'.
ternal container web2[30273]: stopping the following units:
console-getty.service, cron.service, httpd.se
ternal container web2[30273]: activating the configuration...
ternal container web2[30273]: setting up /etc...
ternal container web2[30273]: removing group ‘wwwrun’
ternal container web2[30273]: removing user ‘wwwrun’
ternal container web2[30273]:
/nix/store/hypmmhhhb61v9wh2hmlw6r42bnkzaizy-nixos-14.12.885.b373bf9/activat
ternal container web2[30273]:
/nix/store/hypmmhhhb61v9wh2hmlw6r42bnkzaizy-nixos-14.12.885.b373bf9/activat
ternal container web2[30273]:
/nix/store/hypmmhhhb61v9wh2hmlw6r42bnkzaizy-nixos-14.12.885.b373bf9/activat
ternal container web2[29848]: web2 login: Running in a container,
ignoring fstab device entry for /dev/di
ternal container web2[30273]: reloading the following units:
dbus.service, firewall.service
ternal container web2[30273]: starting the following units:
cron.service, nscd.service
ternal kernel: EXT4-fs (xvda1): re-mounted. Opts: (null)
ternal kernel: INFO: task systemd-shutdow:13535 blocked for more than
120 seconds.
ternal kernel:       Not tainted 3.14.50 #1-NixOS
ternal kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
ternal kernel: systemd-shutdow D ffff88007fc127c0     0 13535      1 0x00000002
ternal kernel:  ffff88006f1d3d58 0000000000000046 ffff88007c0ae600
00000000000127c0
ternal kernel:  ffff88006f1d3fd8 00000000000127c0 ffff88007c0ae600
ffff88007c0ae600
ternal kernel:  ffff880074b00890 0000000000000001 0000000000000000
ffff88007c0ae600
ternal kernel: Call Trace:
ternal kernel:  [<ffffffff81460e89>] schedule+0x29/0x70
ternal kernel:  [<ffffffff810e04f5>] zap_pid_ns_processes+0x145/0x1a0
ternal kernel:  [<ffffffff81062795>] do_exit+0xa05/0xa40
ternal kernel:  [<ffffffff810e05cd>] reboot_pid_ns+0x7d/0xa0
ternal kernel:  [<ffffffff81087c3e>] SYSC_reboot+0x8e/0x260
ternal kernel:  [<ffffffff810629aa>] ? SyS_waitid+0xaa/0x170
ternal kernel:  [<ffffffff81051c52>] ? do_page_fault+0x22/0x30
ternal kernel:  [<ffffffff81087eae>] SyS_reboot+0xe/0x10
ternal kernel:  [<ffffffff81465089>] system_call_fastpath+0x16/0x1b
ternal systemd[1]: container at web2.service reload operation timed out. Stopping.
ternal systemd[1]: Reload failed for Container 'web2'.

# nixos-version
14.12.885.b373bf9 (Caterpillar)

T(hx)