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block: add tests for the 'blockdev-snapshot' command

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Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2015-10-26 14:27:17 +02:00 committed by Kevin Wolf
parent 43de7e2de0
commit 89e3a2d86d
2 changed files with 128 additions and 8 deletions
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102
tests/qemu-iotests/085
View File

@ -7,6 +7,7 @@
# snapshots are performed. # snapshots are performed.
# #
# Copyright (C) 2014 Red Hat, Inc. # Copyright (C) 2014 Red Hat, Inc.
# Copyright (C) 2015 Igalia, S.L.
# #
# This program is free software; you can redistribute it and/or modify # 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 # it under the terms of the GNU General Public License as published by
@ -34,17 +35,17 @@ status=1 # failure is the default!
snapshot_virt0="snapshot-v0.qcow2" snapshot_virt0="snapshot-v0.qcow2"
snapshot_virt1="snapshot-v1.qcow2" snapshot_virt1="snapshot-v1.qcow2"
MAX_SNAPSHOTS=10 SNAPSHOTS=10
_cleanup() _cleanup()
{ {
_cleanup_qemu _cleanup_qemu
for i in $(seq 1 ${MAX_SNAPSHOTS}) for i in $(seq 1 ${SNAPSHOTS})
do do
rm -f "${TEST_DIR}/${i}-${snapshot_virt0}" rm -f "${TEST_DIR}/${i}-${snapshot_virt0}"
rm -f "${TEST_DIR}/${i}-${snapshot_virt1}" rm -f "${TEST_DIR}/${i}-${snapshot_virt1}"
done done
_cleanup_test_img rm -f "${TEST_IMG}.1" "${TEST_IMG}.2"
} }
trap "_cleanup; exit \$status" 0 1 2 3 15 trap "_cleanup; exit \$status" 0 1 2 3 15
@ -85,18 +86,50 @@ function create_group_snapshot()
_send_qemu_cmd $h "${cmd}" "return" _send_qemu_cmd $h "${cmd}" "return"
} }
# ${1}: unique identifier for the snapshot filename
# ${2}: true: open backing images; false: don't open them (default)
function add_snapshot_image()
{
if [ "${2}" = "true" ]; then
extra_params=""
else
extra_params="'backing': '', "
fi
base_image="${TEST_DIR}/$((${1}-1))-${snapshot_virt0}"
snapshot_file="${TEST_DIR}/${1}-${snapshot_virt0}"
_make_test_img -b "${base_image}" "$size"
mv "${TEST_IMG}" "${snapshot_file}"
cmd="{ 'execute': 'blockdev-add', 'arguments':
{ 'options':
{ 'driver': 'qcow2', 'node-name': 'snap_"${1}"', "${extra_params}"
'file':
{ 'driver': 'file', 'filename': '"${snapshot_file}"' } } } }"
_send_qemu_cmd $h "${cmd}" "return"
}
# ${1}: unique identifier for the snapshot filename
# ${2}: expected response, defaults to 'return'
function blockdev_snapshot()
{
cmd="{ 'execute': 'blockdev-snapshot',
'arguments': { 'node': 'virtio0',
'overlay':'snap_"${1}"' } }"
_send_qemu_cmd $h "${cmd}" "${2:-return}"
}
size=128M size=128M
_make_test_img $size _make_test_img $size
mv "${TEST_IMG}" "${TEST_IMG}.orig" mv "${TEST_IMG}" "${TEST_IMG}.1"
_make_test_img $size _make_test_img $size
mv "${TEST_IMG}" "${TEST_IMG}.2"
echo echo
echo === Running QEMU === echo === Running QEMU ===
echo echo
qemu_comm_method="qmp" qemu_comm_method="qmp"
_launch_qemu -drive file="${TEST_IMG}.orig",if=virtio -drive file="${TEST_IMG}",if=virtio _launch_qemu -drive file="${TEST_IMG}.1",if=virtio -drive file="${TEST_IMG}.2",if=virtio
h=$QEMU_HANDLE h=$QEMU_HANDLE
echo echo
@ -105,6 +138,8 @@ echo
_send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" "return" _send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" "return"
# Tests for the blockdev-snapshot-sync command
echo echo
echo === Create a single snapshot on virtio0 === echo === Create a single snapshot on virtio0 ===
echo echo
@ -132,11 +167,66 @@ echo
echo === Create several transactional group snapshots === echo === Create several transactional group snapshots ===
echo echo
for i in $(seq 2 ${MAX_SNAPSHOTS}) for i in $(seq 2 ${SNAPSHOTS})
do do
create_group_snapshot ${i} create_group_snapshot ${i}
done done
# Tests for the blockdev-snapshot command
echo
echo === Create a couple of snapshots using blockdev-snapshot ===
echo
SNAPSHOTS=$((${SNAPSHOTS}+1))
add_snapshot_image ${SNAPSHOTS}
blockdev_snapshot ${SNAPSHOTS}
SNAPSHOTS=$((${SNAPSHOTS}+1))
add_snapshot_image ${SNAPSHOTS}
blockdev_snapshot ${SNAPSHOTS}
echo
echo === Invalid command - snapshot node used as active layer ===
echo
blockdev_snapshot ${SNAPSHOTS} error
_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
'arguments': { 'node':'virtio0',
'overlay':'virtio0' }
}" "error"
_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
'arguments': { 'node':'virtio0',
'overlay':'virtio1' }
}" "error"
echo
echo === Invalid command - snapshot node used as backing hd ===
echo
blockdev_snapshot $((${SNAPSHOTS}-1)) error
echo
echo === Invalid command - snapshot node has a backing image ===
echo
SNAPSHOTS=$((${SNAPSHOTS}+1))
add_snapshot_image ${SNAPSHOTS} true
blockdev_snapshot ${SNAPSHOTS} error
echo
echo === Invalid command - The node does not exist ===
echo
blockdev_snapshot $((${SNAPSHOTS}+1)) error
_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
'arguments': { 'node':'nodevice',
'overlay':'snap_"${SNAPSHOTS}"' }
}" "error"
# success, all done # success, all done
echo "*** done" echo "*** done"
rm -f $seq.full rm -f $seq.full

34
tests/qemu-iotests/085.out
View File

@ -11,7 +11,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
=== Create a single snapshot on virtio0 === === 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 refcount_bits=16 Formatting 'TEST_DIR/1-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file=TEST_DIR/t.qcow2.1 backing_fmt=qcow2 encryption=off cluster_size=65536 lazy_refcounts=off refcount_bits=16
{"return": {}} {"return": {}}
=== Invalid command - missing device and nodename === === Invalid command - missing device and nodename ===
@ -26,7 +26,7 @@ Formatting 'TEST_DIR/1-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file
=== Create several transactional group snapshots === === 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 refcount_bits=16 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 refcount_bits=16
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 refcount_bits=16 Formatting 'TEST_DIR/2-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file=TEST_DIR/t.qcow2.2 backing_fmt=qcow2 encryption=off cluster_size=65536 lazy_refcounts=off refcount_bits=16
{"return": {}} {"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 refcount_bits=16 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 refcount_bits=16
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 refcount_bits=16 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 refcount_bits=16
@ -52,4 +52,34 @@ Formatting 'TEST_DIR/9-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file
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 refcount_bits=16 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 refcount_bits=16
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 refcount_bits=16 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 refcount_bits=16
{"return": {}} {"return": {}}
=== Create a couple of snapshots using blockdev-snapshot ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/10-snapshot-v0.IMGFMT
{"return": {}}
{"return": {}}
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/11-snapshot-v0.IMGFMT
{"return": {}}
{"return": {}}
=== Invalid command - snapshot node used as active layer ===
{"error": {"class": "GenericError", "desc": "The snapshot is already in use by virtio0"}}
{"error": {"class": "GenericError", "desc": "The snapshot is already in use by virtio0"}}
{"error": {"class": "GenericError", "desc": "The snapshot is already in use by virtio1"}}
=== Invalid command - snapshot node used as backing hd ===
{"error": {"class": "GenericError", "desc": "Node 'snap_11' is busy: node is used as backing hd of 'virtio0'"}}
=== Invalid command - snapshot node has a backing image ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/12-snapshot-v0.IMGFMT
{"return": {}}
{"error": {"class": "GenericError", "desc": "The snapshot already has a backing image"}}
=== Invalid command - The node does not exist ===
{"error": {"class": "GenericError", "desc": "Cannot find device=snap_14 nor node_name=snap_14"}}
{"error": {"class": "GenericError", "desc": "Cannot find device=nodevice nor node_name=nodevice"}}
*** done *** done