Commit 4089f7c6 authored by Jeff Cody's avatar Jeff Cody Committed by Kevin Wolf
Browse files

block: qemu-iotests 085 - live snapshots tests 



This adds tests for live snapshots, both through the single
snapshot command, and the transaction group snapshot command.

The snapshots are done through the QMP interface, using the
following commands for snapshots:

Single snapshot:
{ 'execute': 'blockdev-snapshot-sync', 'arguments':
             { 'device': 'virtio0', 'snapshot-file':'...',
               'format': 'qcow2' } }"

Group snapshot:
{ 'execute': 'transaction', 'arguments':
              {'actions': [
                  { 'type': 'blockdev-snapshot-sync', 'data' :
                    { 'device': 'virtio0', 'snapshot-file': '...' } },
                  { 'type': 'blockdev-snapshot-sync', 'data' :
                    { 'device': 'virtio1', 'snapshot-file': '...' } } ]
             } }

Signed-off-by: default avatarJeff Cody <jcody@redhat.com>
Reviewed-by: default avatarBenoit Canet <benoit@irqsave.net>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent 2c02f887

tests/qemu-iotests/085

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#!/bin/bash

#

# Live snapshot tests

#

# This tests live snapshots of images on a running QEMU instance, using

# QMP commands.  Both single disk snapshots, and transactional group

# snapshots are performed.

#

# Copyright (C) 2014 Red Hat, Inc.

#

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program.  If not, see <http://www.gnu.org/licenses/>.

#



# creator

owner=jcody@redhat.com



seq=`basename $0`

echo "QA output created by $seq"



here=`pwd`

status=1	# failure is the default!

qemu_pid=



QMP_IN="${TEST_DIR}/qmp-in-$$"

QMP_OUT="${TEST_DIR}/qmp-out-$$"



snapshot_virt0="snapshot-v0.qcow2"

snapshot_virt1="snapshot-v1.qcow2"



MAX_SNAPSHOTS=10



_cleanup()

{

    kill -KILL ${qemu_pid}

    wait ${qemu_pid} 2>/dev/null  # silent kill



    rm -f "${QMP_IN}" "${QMP_OUT}"

    for i in $(seq 1 ${MAX_SNAPSHOTS})

    do

        rm -f "${TEST_DIR}/${i}-${snapshot_virt0}"

        rm -f "${TEST_DIR}/${i}-${snapshot_virt1}"

    done

	_cleanup_test_img



}

trap "_cleanup; exit \$status" 0 1 2 3 15



# get standard environment, filters and checks

. ./common.rc

. ./common.filter



_supported_fmt qcow2

_supported_proto file

_supported_os Linux



# Wait for expected QMP response from QEMU.  Will time out

# after 10 seconds, which counts as failure.

#

# $1 is the string to expect

#

# If $silent is set to anything but an empty string, then

# response is not echoed out.

function timed_wait_for()

{

    while read -t 10 resp <&5

    do

        if [ "${silent}" == "" ]; then

            echo "${resp}" | _filter_testdir | _filter_qemu

        fi

        grep -q "${1}" < <(echo ${resp})

        if [ $? -eq 0 ]; then

            return

        fi

    done

    echo "Timeout waiting for ${1}"

    exit 1  # Timeout means the test failed

}



# Sends QMP command to QEMU, and waits for the expected response

#

# ${1}:  String of the QMP command to send

# ${2}:  String that the QEMU response should contain

function send_qmp_cmd()

{

    echo "${1}" >&6

    timed_wait_for "${2}"

}



# ${1}: unique identifier for the snapshot filename

function create_single_snapshot()

{

    cmd="{ 'execute': 'blockdev-snapshot-sync',

                      'arguments': { 'device': 'virtio0',

                                     'snapshot-file':'"${TEST_DIR}/${1}-${snapshot_virt0}"',

                                     'format': 'qcow2' } }"

    send_qmp_cmd "${cmd}" "return"

}



# ${1}: unique identifier for the snapshot filename

function create_group_snapshot()

{

    cmd="{ 'execute': 'transaction', 'arguments':

           {'actions': [

               { 'type': 'blockdev-snapshot-sync', 'data' :

                   { 'device': 'virtio0',

                      'snapshot-file': '"${TEST_DIR}/${1}-${snapshot_virt0}"' } },

               { 'type': 'blockdev-snapshot-sync', 'data' :

                   { 'device': 'virtio1',

                       'snapshot-file': '"${TEST_DIR}/${1}-${snapshot_virt1}"' } } ]

             } }"



    send_qmp_cmd "${cmd}" "return"

}



size=128M



mkfifo "${QMP_IN}"

mkfifo "${QMP_OUT}"



_make_test_img $size

mv "${TEST_IMG}" "${TEST_IMG}.orig"

_make_test_img $size



echo

echo === Running QEMU ===

echo



"${QEMU}" -nographic -monitor none -serial none -qmp stdio\

          -drive file="${TEST_IMG}.orig",if=virtio\

          -drive file="${TEST_IMG}",if=virtio 2>&1 >"${QMP_OUT}" <"${QMP_IN}"&

qemu_pid=$!



# redirect fifos to file descriptors, to keep from blocking

exec 5<"${QMP_OUT}"

exec 6>"${QMP_IN}"



# Don't print response, since it has version information in it

silent=yes timed_wait_for "capabilities"



echo

echo === Sending capabilities ===

echo



send_qmp_cmd "{ 'execute': 'qmp_capabilities' }" "return"



echo

echo === Create a single snapshot on virtio0 ===

echo



create_single_snapshot 1





echo

echo === Invalid command - missing device and nodename ===

echo



send_qmp_cmd "{ 'execute': 'blockdev-snapshot-sync',

                      'arguments': { 'snapshot-file':'"${TEST_DIR}"/1-${snapshot_virt0}',

                                     'format': 'qcow2' } }" "error"



echo

echo === Invalid command - missing snapshot-file ===

echo



send_qmp_cmd "{ 'execute': 'blockdev-snapshot-sync',

                      'arguments': { 'device': 'virtio0',

                                     'format': 'qcow2' } }" "error"

echo

echo

echo === Create several transactional group snapshots ===

echo



for i in $(seq 2 ${MAX_SNAPSHOTS})

do

    create_group_snapshot ${i}

done



# success, all done

echo "*** done"

rm -f $seq.full

status=0

tests/qemu-iotests/085.out

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QA output created by 085

Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728

Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728



=== Running QEMU ===





=== Sending capabilities ===



{"return": {}}



=== Create a single snapshot on virtio0 ===



Formatting 'TEST_DIR/1-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/t.qcow2.orig' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}



=== Invalid command - missing device and nodename ===



{"error": {"class": "GenericError", "desc": "Cannot find device= nor node_name="}}



=== Invalid command - missing snapshot-file ===



{"error": {"class": "GenericError", "desc": "Parameter 'snapshot-file' is missing"}}





=== Create several transactional group snapshots ===



Formatting 'TEST_DIR/2-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/1-snapshot-v0.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

Formatting 'TEST_DIR/2-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/t.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}

Formatting 'TEST_DIR/3-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/2-snapshot-v0.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

Formatting 'TEST_DIR/3-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/2-snapshot-v1.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}

Formatting 'TEST_DIR/4-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/3-snapshot-v0.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

Formatting 'TEST_DIR/4-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/3-snapshot-v1.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}

Formatting 'TEST_DIR/5-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/4-snapshot-v0.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

Formatting 'TEST_DIR/5-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/4-snapshot-v1.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}

Formatting 'TEST_DIR/6-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/5-snapshot-v0.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

Formatting 'TEST_DIR/6-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/5-snapshot-v1.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}

Formatting 'TEST_DIR/7-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/6-snapshot-v0.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

Formatting 'TEST_DIR/7-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/6-snapshot-v1.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}

Formatting 'TEST_DIR/8-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/7-snapshot-v0.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

Formatting 'TEST_DIR/8-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/7-snapshot-v1.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}

Formatting 'TEST_DIR/9-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/8-snapshot-v0.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

Formatting 'TEST_DIR/9-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/8-snapshot-v1.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}

Formatting 'TEST_DIR/10-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/9-snapshot-v0.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

Formatting 'TEST_DIR/10-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file='TEST_DIR/9-snapshot-v1.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off

{"return": {}}

*** done

tests/qemu-iotests/group

+1 −0
Original line number Diff line number Diff line
@@ -85,5 +85,6 @@ 
079 rw auto

081 rw auto

082 rw auto quick

085 rw auto quick

086 rw auto quick

087 rw auto quick