recepies/ganeti/restore-to-zfs-vol.sh

#!/bin/sh -e 

pool=workshop

size=60G
vol_opt="-b 4k -s"
#vol_opt="-b 4k -s -o compression=lz4"

if [ -z "$1" ] ; then
        zfs list -r $pool/block
        echo
        test ! -z "/mnt/*" && df -h /mnt/* | grep -v aufs
        echo
        du -hcs /$pool/ganeti/export/* | cut -d/ -f1,5
        exit 1
else
        instance=$1
fi

umount /mnt/$instance || true
zfs destroy $pool/block/$instance || true

zfs create -V $size $vol_opt $pool/block/$instance

test -d /mnt/$instance || mkdir /mnt/$instance

wait_for() {
        echo -n "waiting for $1 " 
        while [ ! -e $1 ] ; do
                echo -n .
                sleep 1
        done
        echo " found"
}

wait_for /dev/zvol/$pool/block/$instance

label=`echo $instance | cut -d. -f1`
echo "label $label = $instance"

time mkfs.ext4 -m 0 -L $label /dev/zvol/$pool/block/$instance 

wait_for /dev/disk/by-label/$label

mount /dev/disk/by-label/$label /mnt/$instance/
cd /mnt/$instance/
dump=`ls /$pool/ganeti/export/$instance/*.disk0*.snap`
ls -alh $dump
zpool iostat 2 | tee /dev/shm/$instance &
pid_iostat=$!
( while true; do zfs list $pool/block/$instance ; sleep 10 ; done ) &
pid_list=$! 
time restore rf $dump
kill $pid_iostat
kill $pid_list

wc -l /dev/shm/$instance
df -h /mnt/$instance
1	#!/bin/sh -e
2
3	pool=workshop
4
5	size=60G
6	vol_opt="-b 4k -s"
7	#vol_opt="-b 4k -s -o compression=lz4"
8
9	if [ -z "$1" ] ; then
10	zfs list -r $pool/block
11	echo
12	test ! -z "/mnt/" && df -h /mnt/ \| grep -v aufs
13	echo
14	du -hcs /$pool/ganeti/export/* \| cut -d/ -f1,5
15	exit 1
16	else
17	instance=$1
18	fi
19
20	umount /mnt/$instance \|\| true
21	zfs destroy $pool/block/$instance \|\| true
22
23	zfs create -V $size $vol_opt $pool/block/$instance
24
25	test -d /mnt/$instance \|\| mkdir /mnt/$instance
26
27	wait_for() {
28	echo -n "waiting for $1 "
29	while [ ! -e $1 ] ; do
30	echo -n .
31	sleep 1
32	done
33	echo " found"
34	}
35
36	wait_for /dev/zvol/$pool/block/$instance
37
38	label=`echo $instance \| cut -d. -f1`
39	echo "label $label = $instance"
40
41	time mkfs.ext4 -m 0 -L $label /dev/zvol/$pool/block/$instance
42
43	wait_for /dev/disk/by-label/$label
44
45	mount /dev/disk/by-label/$label /mnt/$instance/
46	cd /mnt/$instance/
47	dump=`ls /$pool/ganeti/export/$instance/.disk0.snap`
48	ls -alh $dump
49	zpool iostat 2 \| tee /dev/shm/$instance &
50	pid_iostat=$!
51	( while true; do zfs list $pool/block/$instance ; sleep 10 ; done ) &
52	pid_list=$!
53	time restore rf $dump
54	kill $pid_iostat
55	kill $pid_list
56
57	wc -l /dev/shm/$instance
58	df -h /mnt/$instance