[Pkg-sysvinit-devel] Bug#708934: how to avoid all mounts for LXC systems?

[Harald Dunkel]

Package: initscripts
Version: 2.88dsf-41
Severity: wishlist

For LXC systems all mounts are supposed to happen _before_
init is run. Every mount tried by one of the run level scripts
creates a "permission denied" error message.

Below is a sample boot session showing startup and shutdown
of a LXC system (CONCURRENCY=none).

The problem is that I cannot disable the "unwanted" scripts
performing the mount, because I would loose other initialization
steps as well.

It would be very nice if the run level scripts doing mount/\
umount could be streamlined to support LXC systems.


Many thanx
Harri

-------------------------------------------------------------------
# lxc-start -n wheezy
INIT: version 2.88 booting
@@@ /etc/rcS.d/S01checkroot-bootclean.sh start
Cleaning up temporary files... /tmp /lib/init/rw /run /run/lock /run/shm.
@@@ /etc/rcS.d/S01mountkernfs.sh start
mount: permission denied
mount: permission denied
@@@ /etc/rcS.d/S01mtab.sh start
mount: permission denied
mount: permission denied
mount: permission denied
Mount point '/dev/console' does not exist. Skipping mount. ... (warning).
Mount point '/dev/tty1' does not exist. Skipping mount. ... (warning).
Mount point '/dev/tty2' does not exist. Skipping mount. ... (warning).
Mount point '/dev/tty3' does not exist. Skipping mount. ... (warning).
Mount point '/dev/tty4' does not exist. Skipping mount. ... (warning).
Mount point '/dev/ptmx' does not exist. Skipping mount. ... (warning).
@@@ /etc/rcS.d/S02mountdevsubfs.sh start
mount: permission denied
@@@ /etc/rcS.d/S03bootlogd start
@@@ /etc/rcS.d/S04checkfs.sh start
Activating lvm and md swap...done.
Checking file systems...fsck from util-linux 2.20.1
done.
@@@ /etc/rcS.d/S05hostname.sh start
hostname: you must be root to change the host name
@@@ /etc/rcS.d/S05mountall.sh start
Mounting local filesystems...done.
/etc/rcS.d/S05mountall.sh: 59: kill: Illegal number: 2 1
Activating swapfile swap...done.
mount: permission denied
mount: permission denied
mount: permission denied
@@@ /etc/rcS.d/S06mountall-bootclean.sh start
Cleaning up temporary files....
@@@ /etc/rcS.d/S07procps start
Setting kernel variables ...done.
@@@ /etc/rcS.d/S07resolvconf start
Setting up resolvconf...done.
@@@ /etc/rcS.d/S07urandom start
@@@ /etc/rcS.d/S08networking start
Configuring network interfaces...Internet Systems Consortium DHCP Client 4.2.2
Copyright 2004-2011 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/00:20:82:75:b6:ef
Sending on   LPF/eth0/00:20:82:75:b6:ef
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPOFFER from 172.19.96.123
DHCPACK from 172.19.96.123
bound to 172.19.99.214 -- renewal in 885 seconds.
done.
@@@ /etc/rcS.d/S09mountnfs.sh start
@@@ /etc/rcS.d/S10mountnfs-bootclean.sh start
Cleaning up temporary files....
@@@ /etc/rcS.d/S11bootmisc.sh start
@@@ /etc/rcS.d/S12stop-bootlogd-single start
INIT: Entering runlevel: 3
@@@ /etc/rc3.d/S01bootlogs start
@@@ /etc/rc3.d/S01motd start
@@@ /etc/rc3.d/S01rsyslog start
Starting enhanced syslogd: rsyslogd.
@@@ /etc/rc3.d/S02cron start
Starting periodic command scheduler: cron.
@@@ /etc/rc3.d/S02rsync start
@@@ /etc/rc3.d/S02ssh start
Starting OpenBSD Secure Shell server: sshd.
@@@ /etc/rc3.d/S03rc.local start
@@@ /etc/rc3.d/S03rmnologin start
@@@ /etc/rc3.d/S03stop-bootlogd start

Debian GNU/Linux 7.0 wheezy.vs.aixigo.de console

INIT: Switching to runlevel: 0
INIT: Sending processes the TERM signal
@@@ /etc/rc0.d/K01resolvconf stop
Stopping resolvconf...done.
@@@ /etc/rc0.d/K01sendsigs stop
Asking all remaining processes to terminate...done.
All processes ended within 1 seconds...done.
@@@ /etc/rc0.d/K01urandom stop
@@@ /etc/rc0.d/K02rsyslog stop
Stopping enhanced syslogd: rsyslogd.
@@@ /etc/rc0.d/K03umountnfs.sh stop
umount: /dev/ptmx: must be superuser to umount
umount: /dev/tty4: must be superuser to umount
umount: /dev/tty3: must be superuser to umount
umount: /dev/tty2: must be superuser to umount
umount: /dev/tty1: must be superuser to umount
umount: /dev/console: must be superuser to umount
@@@ /etc/rc0.d/K04networking stop
Deconfiguring network interfaces...Internet Systems Consortium DHCP Client 4.2.2
Copyright 2004-2011 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/

Listening on LPF/eth0/00:20:82:75:b6:ef
Sending on   LPF/eth0/00:20:82:75:b6:ef
Sending on   Socket/fallback
DHCPRELEASE on eth0 to 172.19.96.123 port 67
done.
@@@ /etc/rc0.d/K05umountfs stop
Unmounting temporary filesystems...umount: /lib/init/rw: must be superuser to umount
failed.
Deactivating swap...swapoff: Not superuser.
failed.
@@@ /etc/rc0.d/K06umountroot stop
mount: permission denied
@@@ /etc/rc0.d/K07halt stop
Will now halt.
INIT: no more processes left in this runlevel