93 lines
2.3 KiB
Bash
Executable File
93 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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INSTANCES_PATH=${INSTANCES_PATH:-/var/lib/nova/instances}
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if [ -z "$1" ]; then echo "specify an instance id to debug"; exit; fi
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if [ -n "$3" ]; then DEVICE=$3; fi
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CMD="all"
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if [ -n "$2" ]; then CMD=$2; fi
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cd $INSTANCES_PATH/$1
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if [ $CMD != "umount" ] && [ $CMD != "launch" ]; then
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# destroy the instance
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virsh destroy $1
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# mount the filesystem
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mkdir t
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DEVICE=`losetup --show -f disk`
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echo $DEVICE
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kpartx -a $DEVICE
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mount /dev/mapper/${DEVICE:4}p1 t
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fi
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if [ $CMD != "mount" ] && [ $CMD != "umount" ]; then
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# make serial console listen on ttyS0
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cat >t/etc/init/ttyS0.conf <<TTY_EOF
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# ttyS0 - getty
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#
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# This service maintains a getty on ttyS0 from the point the system is
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# started until it is shut down again.
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start on stopped rc RUNLEVEL=[2345]
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stop on runlevel [!2345]
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respawn
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exec /sbin/getty -L 115200 ttyS0 xterm
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TTY_EOF
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echo
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# set debug root password
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chroot t passwd -u root
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# TODO(vish): automate this with expect
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chroot t passwd root
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tr -d '\n' < libvirt.xml > debug.xml
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sed -i "s/<serial type=\"file\">.*<\/serial>/<serial type=\"pty\"><source path=\"\/dev\/pts\/1\"\/><target port=\"0\"\/><\/serial>/g" debug.xml
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umount t
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virsh create debug.xml
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virsh console $1
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virsh destroy $1
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mount /dev/mapper/${DEVICE:4}p1 t
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# clear debug root password
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chroot t passwd -l root
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# remove the serial console conf
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rm -f t/etc/init/ttyS0.conf
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fi
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if [ $CMD != "mount" ] && [ $CMD != "launch" ]; then
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# unmount the filesystem
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umount t
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kpartx -d $DEVICE
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losetup -d $DEVICE
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rmdir t
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# recreate the instance
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virsh create libvirt.xml
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fi
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