Re: Error: undump failed: Resource temporarily unavailable [message #36659 is a reply to message #36644] |
Wed, 08 July 2009 11:28 ![Go to previous message Go to previous message](/theme/ovz3/images/up.png) |
duswil
Messages: 77 Registered: January 2006
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Member |
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Heh.. that worked nicely.
For those interested, here's my script (not broken out into nice functions for the error handling (some duplicate code), but it works great):
#!/bin/bash
VEID=$1
# test DRBD
if grep -q 'UpToDate/UpToDate' /proc/drbd; then
echo
echo "DRBD is OK. Continuing..."
echo
else
echo
cat /proc/drbd
echo
echo "*** DRBD is NOT OK. Quitting..."
echo
exit
fi
# test VEID
RUNNING=`vzctl status $VEID | awk '{print $5}'`
if [ "$RUNNING" != "running" ]; then
echo "*** $VEID is not running or does not exist. Online migration is pointless in this situation."
echo
exit 1
fi
# freeze and dump
echo "REMOVING OLD DUMPS (if any)..."
rm -f "/var/lib/vz/dump/$VEID"
echo "LOCALLY FREEZING $VEID..."
if ! vzctl chkpnt $VEID --suspend; then
echo "*** FAILED to suspend $VEID."
exit
fi
echo "LOCALLY DUMPING $VEID..."
if ! vzctl chkpnt $VEID --dump --dumpfile /var/lib/vz/dump/$VEID; then
echo "*** FAILED to dump $VEID. Resuming $VEID on current HN."
if ! vzctl chkpnt $VEID --resume; then
echo "*** FAILED to resume $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
exit
fi
# stop and umount
echo "LOCALLY STOPPING $VEID..."
if ! vzctl chkpnt $VEID --kill; then
echo "*** FAILED to kill $VEID on current HN. Resuming $VEID on current HN."
if ! vzctl chkpnt $VEID --resume; then
echo "*** FAILED to resume $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
exit
fi
echo "LOCALLY UMOUNTING $VEID..."
if ! vzctl umount $VEID; then
echo "*** FAILED to umount $VEID on current HN. Resuming $VEID on current HN."
if ! vzctl chkpnt $VEID --undump --dumpfile /var/lib/vz/dump/$VEID; then
echo "*** FAILED to undump $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
if ! vzctl chkpnt $VEID --resume; then
echo "*** FAILED to resume $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
fi
# undump and thaw
echo "REMOTELY ADDING CONF FOR $VEID..."
if ! ssh root@vzpeer ln -s /var/lib/vz/conf/$VEID.* /etc/vz/conf/; then
echo "*** FAILED adding $VEID conf files to vzpeer. Resuming $VEID on current HN."
if ! vzctl chkpnt $VEID --undump --dumpfile /var/lib/vz/dump/$VEID; then
echo "*** FAILED to undump $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
if ! vzctl chkpnt $VEID --resume; then
echo "*** FAILED to resume $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
exit
fi
echo "REMOTELY UNDUMPING $VEID..."
if ! ssh root@vzpeer vzctl restore $VEID --undump --dumpfile /var/lib/vz/dump/$VEID; then
echo "*** FAILED undumping $VEID on vzpeer. Removing $VEID conf on vzpeer and resuming $VEID on current HN."
ssh root@vzpeer rm -f /etc/vz/conf/$VEID.*
if ! vzctl chkpnt $VEID --undump --dumpfile /var/lib/vz/dump/$VEID; then
echo "*** FAILED to undump $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
if ! vzctl chkpnt $VEID --resume; then
echo "*** FAILED to resume $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
exit
fi
echo "REMOTELY THAWING $VEID..."
if ! ssh root@vzpeer vzctl restore $VEID --resume; then
echo "*** FAILED to resume $VEID on vzpeer. Removing $VEID conf on vzpeer and resuming $VEID on current HN."
ssh root@vzpeer rm -f /etc/vz/conf/$VEID.*
if ! vzctl chkpnt $VEID --undump --dumpfile /var/lib/vz/dump/$VEID; then
echo "*** FAILED to undump $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
if ! vzctl chkpnt $VEID --resume; then
echo "*** FAILED to resume $VEID on current HN. I'll leave it to you to figure it out."
exit
fi
exit
fi
# cleanup
echo "REMOVING DUMP..."
if ! rm -f "/var/lib/vz/dump/$VEID"; then
echo "*** FAILED to remove $VEID dump file. Maybe there isn't a problem. I'll let you decide."
fi
echo "REMOVING LOCAL CONF FOR $VEID..."
if ! rm -f /etc/vz/conf/$VEID.*; then
echo "*** FAILED to remove $VEID conf symlinks on current HN. If they still exist, you might have the VE running on two machines at once on reboot. I'll let you figure it out."
fi
# done
echo "All done!"
[Updated on: Wed, 08 July 2009 11:29] Report message to a moderator
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