gnt-growonline

#!/bin/sh
set -e
name=$1
if [ -z "$name" ]; then
	echo $0 vmname
	exit 1
fi

monitorpath=/var/run/ganeti/kvm-hypervisor/ctrl/${name}.monitor
if [ ! -S $monitorpath ]; then
	echo $monitorpath dont exists
	exit 1
fi

tmpfile=`mktemp /tmp/vm-${name}.XXXXXX`
echo info block |socat - unix:$monitorpath |grep -E '^(disk|hotdisk)' > $tmpfile
echo disks:
cat $tmpfile
kvmnames=$(cut -f 1 -d ' ' <$tmpfile)
for kvmname in $kvmnames; do
	blockname=$(grep $kvmname $tmpfile | grep -Eo '/var/run/ganeti/instance-disks/[a-z0-9:-]+')

	if [ ! -h "$blockname" ]; then
		echo there is no file $blockname
		exit 1
	fi

	size=$(blockdev --getsize64 "$blockname")

	if [ ! $size -gt 0 ]; then
		echo incorrect size
		exit 1
	fi

	echo size of $blockname: $size
	echo block_resize $kvmname ${size}B |socat - unix:$monitorpath |xargs echo
done