Public bug reported:
Ubuntu 14.04.4 LTS
ifupdown version 0.7.47.2ubuntu4.4
In /etc/init/networking.conf, there is a test for an iSCSI filesystem
mounted by the initramfs, which tests to see if the file
/etc/iscsi/iscsi.initramfs exists. If that file exists, the script exits
immediately, which means that the event "deconfiguring-networking" never
occurs.
The correct behavior would seem to be to detect which interface is being
used for the iSCSI mount, and exclude just that interface from the
"ifdown" command just after the event emission.
I.e. if the iSCSI volume is using eth2, then the ifdown command should
be called as "ifdown -a --exclude=lo0 --exclude=eth2"
Appropriate code might be:
<BEGIN /etc/init/networking.conf>
# networking - configure virtual network devices
#
# This task causes virtual network devices that do not have an associated
# kernel object to be started on boot.
description "configure virtual network devices"
emits static-network-up
emits net-device-up
emits deconfiguring-networking
start on (local-filesystems
and (stopped udevtrigger or container)) or runlevel [2345] or stopped
networking RESULT=failed PROCESS=post-stop EXIT_STATUS=100
stop on unmounted-remote-filesystems
pre-start script
if [ "$UPSTART_EVENTS" = "stopped" ] && [ "$UPSTART_JOB" = "networking" ]
&& [ "$EXIT_STATUS" = "100" ]; then
exit 0
fi
mkdir -p /run/network
ifup -a
end script
post-stop script
if [ -z "$UPSTART_STOP_EVENTS" ]; then
echo "Stopping or restarting the networking job is not supported."
echo "Use ifdown & ifup to reconfigure desired interface."
exit 100
fi
log_warning_msg() {
echo $*
}
# These checks were taken from the Debian ifupdown.networking.init script
check_network_file_systems() {
[ -e /proc/mounts ] || return 0
if [ -e /etc/iscsi/iscsi.initramfs ]; then
if [ -e /dev/.initramfs/open-iscsi.interface ]
then
EXCL_NIC=`cat /dev/.initramfs/open-iscsi.interface`
log_warning_msg "not deconfiguring specific network interface
${EXCL_NIC}: iSCSI root is mounted."
EXCLUDE=" --exclude=${EXCL_NIC}"
else
log_warning_msg "not deconfiguring network interfaces: iSCSI
root is mounted."
fi
exit 0
fi
while read DEV MTPT FSTYPE REST; do
case $DEV in
/dev/nbd*|/dev/nd[a-z]*|/dev/etherd/e*)
log_warning_msg "not deconfiguring network interfaces: network
devices still mounted."
exit 0
;;
esac
case $FSTYPE in
nfs|nfs4|smbfs|ncp|ncpfs|cifs|coda|ocfs2|gfs|pvfs|pvfs2|fuse.httpfs|fuse.curlftpfs)
log_warning_msg "not deconfiguring network interfaces: network
file systems still mounted."
exit 0
;;
esac
done < /proc/mounts
}
check_network_swap() {
[ -e /proc/swaps ] || return 0
while read DEV MTPT FSTYPE REST; do
case $DEV in
/dev/nbd*|/dev/nd[a-z]*|/dev/etherd/e*)
log_warning_msg "not deconfiguring network interfaces: network
swap still mounted."
exit 0
;;
esac
done < /proc/swaps
}
<END>
check_network_file_systems
check_network_swap
# Anything that manages network interfaces *MUST* wait for this event
initctl emit deconfiguring-networking
ifdown -a --exclude=lo ${EXCLUDE}
end script
** Affects: ifupdown (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1560762
Title:
iSCSI root with multiple NICs fails ifdown -a
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