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

#!/bin/sh -e 

pool=workshop

instance=koha.ffzg.hr
size=60G
instance=prod.vbz.ffzg.hr
instance=bookreader.rot13.org

if [ -z "$1" ] ; then
        zfs list -r $pool/block
        echo
        test -e "/mnt/*" && df -h /mnt/* | grep -v aufs
        echo
        du -hcs /$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 -b 4k -s $pool/block/$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	dpavlin	320	#!/bin/sh -e
2
3			pool=workshop
4
5			instance=koha.ffzg.hr
6			size=60G
7			instance=prod.vbz.ffzg.hr
8			instance=bookreader.rot13.org
9
10			if [ -z "$1" ] ; then
11			zfs list -r $pool/block
12			echo
13			test -e "/mnt/" && df -h /mnt/ \| grep -v aufs
14			echo
15			du -hcs /$pool/ganeti/export/* \| cut -d/ -f1,5
16			exit 1
17			else
18			instance=$1
19			fi
20
21			umount /mnt/$instance \|\| true
22			zfs destroy $pool/block/$instance \|\| true
23
24			zfs create -V $size -b 4k -s $pool/block/$instance
25
26			test -d /mnt/$instance \|\| mkdir /mnt/$instance
27
28			wait_for() {
29			echo -n "waiting for $1 "
30			while [ ! -e $1 ] ; do
31			echo -n .
32			sleep 1
33			done
34			echo " found"
35			}
36
37			wait_for /dev/zvol/$pool/block/$instance
38
39			label=`echo $instance \| cut -d. -f1`
40			echo "label $label = $instance"
41
42			time mkfs.ext4 -m 0 -L $label /dev/zvol/$pool/block/$instance
43
44			wait_for /dev/disk/by-label/$label
45
46			mount /dev/disk/by-label/$label /mnt/$instance/
47			cd /mnt/$instance/
48			dump=`ls /$pool/ganeti/export/$instance/.disk0.snap`
49			ls -alh $dump
50			zpool iostat 2 \| tee /dev/shm/$instance &
51			pid_iostat=$!
52			( while true; do zfs list $pool/block/$instance ; sleep 10 ; done ) &
53			pid_list=$!
54			time restore rf $dump
55			kill $pid_iostat
56			kill $pid_list
57
58			wc -l /dev/shm/$instance
59			df -h /mnt/$instance