block: add tests for the 'blockdev-snapshot' command
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
Kevin Wolf
parent
43de7e2de0
commit
89e3a2d86d
@ -7,6 +7,7 @@
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# snapshots are performed.
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#
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# Copyright (C) 2014 Red Hat, Inc.
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# Copyright (C) 2015 Igalia, S.L.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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@ -34,17 +35,17 @@ status=1 # failure is the default!
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snapshot_virt0="snapshot-v0.qcow2"
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snapshot_virt1="snapshot-v1.qcow2"
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MAX_SNAPSHOTS=10
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SNAPSHOTS=10
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_cleanup()
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{
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_cleanup_qemu
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for i in $(seq 1 ${MAX_SNAPSHOTS})
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for i in $(seq 1 ${SNAPSHOTS})
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do
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rm -f "${TEST_DIR}/${i}-${snapshot_virt0}"
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rm -f "${TEST_DIR}/${i}-${snapshot_virt1}"
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done
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_cleanup_test_img
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rm -f "${TEST_IMG}.1" "${TEST_IMG}.2"
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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@ -85,18 +86,50 @@ function create_group_snapshot()
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_send_qemu_cmd $h "${cmd}" "return"
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}
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# ${1}: unique identifier for the snapshot filename
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# ${2}: true: open backing images; false: don't open them (default)
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function add_snapshot_image()
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{
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if [ "${2}" = "true" ]; then
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extra_params=""
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else
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extra_params="'backing': '', "
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fi
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base_image="${TEST_DIR}/$((${1}-1))-${snapshot_virt0}"
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snapshot_file="${TEST_DIR}/${1}-${snapshot_virt0}"
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_make_test_img -b "${base_image}" "$size"
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mv "${TEST_IMG}" "${snapshot_file}"
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cmd="{ 'execute': 'blockdev-add', 'arguments':
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{ 'options':
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{ 'driver': 'qcow2', 'node-name': 'snap_"${1}"', "${extra_params}"
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'file':
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{ 'driver': 'file', 'filename': '"${snapshot_file}"' } } } }"
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_send_qemu_cmd $h "${cmd}" "return"
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}
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# ${1}: unique identifier for the snapshot filename
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# ${2}: expected response, defaults to 'return'
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function blockdev_snapshot()
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{
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cmd="{ 'execute': 'blockdev-snapshot',
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'arguments': { 'node': 'virtio0',
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'overlay':'snap_"${1}"' } }"
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_send_qemu_cmd $h "${cmd}" "${2:-return}"
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}
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size=128M
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_make_test_img $size
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mv "${TEST_IMG}" "${TEST_IMG}.orig"
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mv "${TEST_IMG}" "${TEST_IMG}.1"
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_make_test_img $size
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mv "${TEST_IMG}" "${TEST_IMG}.2"
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echo
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echo === Running QEMU ===
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echo
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qemu_comm_method="qmp"
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_launch_qemu -drive file="${TEST_IMG}.orig",if=virtio -drive file="${TEST_IMG}",if=virtio
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_launch_qemu -drive file="${TEST_IMG}.1",if=virtio -drive file="${TEST_IMG}.2",if=virtio
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h=$QEMU_HANDLE
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echo
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@ -105,6 +138,8 @@ echo
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_send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" "return"
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# Tests for the blockdev-snapshot-sync command
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echo
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echo === Create a single snapshot on virtio0 ===
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echo
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@ -132,11 +167,66 @@ echo
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echo === Create several transactional group snapshots ===
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echo
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for i in $(seq 2 ${MAX_SNAPSHOTS})
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for i in $(seq 2 ${SNAPSHOTS})
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do
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create_group_snapshot ${i}
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done
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# Tests for the blockdev-snapshot command
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echo
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echo === Create a couple of snapshots using blockdev-snapshot ===
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echo
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SNAPSHOTS=$((${SNAPSHOTS}+1))
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add_snapshot_image ${SNAPSHOTS}
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blockdev_snapshot ${SNAPSHOTS}
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SNAPSHOTS=$((${SNAPSHOTS}+1))
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add_snapshot_image ${SNAPSHOTS}
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blockdev_snapshot ${SNAPSHOTS}
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echo
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echo === Invalid command - snapshot node used as active layer ===
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echo
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blockdev_snapshot ${SNAPSHOTS} error
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_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
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'arguments': { 'node':'virtio0',
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'overlay':'virtio0' }
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}" "error"
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_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
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'arguments': { 'node':'virtio0',
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'overlay':'virtio1' }
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}" "error"
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echo
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echo === Invalid command - snapshot node used as backing hd ===
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echo
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blockdev_snapshot $((${SNAPSHOTS}-1)) error
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echo
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echo === Invalid command - snapshot node has a backing image ===
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echo
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SNAPSHOTS=$((${SNAPSHOTS}+1))
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add_snapshot_image ${SNAPSHOTS} true
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blockdev_snapshot ${SNAPSHOTS} error
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echo
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echo === Invalid command - The node does not exist ===
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echo
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blockdev_snapshot $((${SNAPSHOTS}+1)) error
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_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
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'arguments': { 'node':'nodevice',
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'overlay':'snap_"${SNAPSHOTS}"' }
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}" "error"
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# success, all done
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echo "*** done"
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rm -f $seq.full
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@ -11,7 +11,7 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
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=== Create a single snapshot on virtio0 ===
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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
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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
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{"return": {}}
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=== Invalid command - missing device and nodename ===
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@ -26,7 +26,7 @@ Formatting 'TEST_DIR/1-snapshot-v0.qcow2', fmt=qcow2 size=134217728 backing_file
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=== Create several transactional group snapshots ===
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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
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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
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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
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{"return": {}}
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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
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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
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@ -52,4 +52,34 @@ Formatting 'TEST_DIR/9-snapshot-v1.qcow2', fmt=qcow2 size=134217728 backing_file
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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
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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
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{"return": {}}
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=== Create a couple of snapshots using blockdev-snapshot ===
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/10-snapshot-v0.IMGFMT
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{"return": {}}
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{"return": {}}
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/11-snapshot-v0.IMGFMT
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{"return": {}}
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{"return": {}}
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=== Invalid command - snapshot node used as active layer ===
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{"error": {"class": "GenericError", "desc": "The snapshot is already in use by virtio0"}}
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{"error": {"class": "GenericError", "desc": "The snapshot is already in use by virtio0"}}
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{"error": {"class": "GenericError", "desc": "The snapshot is already in use by virtio1"}}
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=== Invalid command - snapshot node used as backing hd ===
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{"error": {"class": "GenericError", "desc": "Node 'snap_11' is busy: node is used as backing hd of 'virtio0'"}}
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=== Invalid command - snapshot node has a backing image ===
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 backing_file=TEST_DIR/12-snapshot-v0.IMGFMT
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{"return": {}}
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{"error": {"class": "GenericError", "desc": "The snapshot already has a backing image"}}
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=== Invalid command - The node does not exist ===
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{"error": {"class": "GenericError", "desc": "Cannot find device=snap_14 nor node_name=snap_14"}}
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{"error": {"class": "GenericError", "desc": "Cannot find device=nodevice nor node_name=nodevice"}}
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*** done
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