iotests: Test committing to short backing file

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200424125448.63318-10-kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2020-04-24 14:54:47 +02:00
parent fd586ce8be
commit bf03dede47
3 changed files with 424 additions and 0 deletions

155
tests/qemu-iotests/274 Executable file
View File

@ -0,0 +1,155 @@
#!/usr/bin/env python3
#
# Copyright (C) 2019 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: Kevin Wolf <kwolf@redhat.com>
#
# Some tests for short backing files and short overlays
import iotests
iotests.verify_image_format(supported_fmts=['qcow2'])
iotests.verify_platform(['linux'])
size_short = 1 * 1024 * 1024
size_long = 2 * 1024 * 1024
size_diff = size_long - size_short
def create_chain() -> None:
iotests.qemu_img_log('create', '-f', iotests.imgfmt, base,
str(size_long))
iotests.qemu_img_log('create', '-f', iotests.imgfmt, '-b', base, mid,
str(size_short))
iotests.qemu_img_log('create', '-f', iotests.imgfmt, '-b', mid, top,
str(size_long))
iotests.qemu_io_log('-c', 'write -P 1 0 %d' % size_long, base)
def create_vm() -> iotests.VM:
vm = iotests.VM()
vm.add_blockdev('file,filename=%s,node-name=base-file' % base)
vm.add_blockdev('%s,file=base-file,node-name=base' % iotests.imgfmt)
vm.add_blockdev('file,filename=%s,node-name=mid-file' % mid)
vm.add_blockdev('%s,file=mid-file,node-name=mid,backing=base'
% iotests.imgfmt)
vm.add_drive(top, 'backing=mid,node-name=top')
return vm
with iotests.FilePath('base') as base, \
iotests.FilePath('mid') as mid, \
iotests.FilePath('top') as top:
iotests.log('== Commit tests ==')
create_chain()
iotests.log('=== Check visible data ===')
iotests.qemu_io_log('-c', 'read -P 1 0 %d' % size_short, top)
iotests.qemu_io_log('-c', 'read -P 0 %d %d' % (size_short, size_diff), top)
iotests.log('=== Checking allocation status ===')
iotests.qemu_io_log('-c', 'alloc 0 %d' % size_short,
'-c', 'alloc %d %d' % (size_short, size_diff),
base)
iotests.qemu_io_log('-c', 'alloc 0 %d' % size_short,
'-c', 'alloc %d %d' % (size_short, size_diff),
mid)
iotests.qemu_io_log('-c', 'alloc 0 %d' % size_short,
'-c', 'alloc %d %d' % (size_short, size_diff),
top)
iotests.log('=== Checking map ===')
iotests.qemu_img_log('map', '--output=json', base)
iotests.qemu_img_log('map', '--output=human', base)
iotests.qemu_img_log('map', '--output=json', mid)
iotests.qemu_img_log('map', '--output=human', mid)
iotests.qemu_img_log('map', '--output=json', top)
iotests.qemu_img_log('map', '--output=human', top)
iotests.log('=== Testing qemu-img commit (top -> mid) ===')
iotests.qemu_img_log('commit', top)
iotests.img_info_log(mid)
iotests.qemu_io_log('-c', 'read -P 1 0 %d' % size_short, mid)
iotests.qemu_io_log('-c', 'read -P 0 %d %d' % (size_short, size_diff), mid)
iotests.log('=== Testing HMP commit (top -> mid) ===')
create_chain()
with create_vm() as vm:
vm.launch()
vm.qmp_log('human-monitor-command', command_line='commit drive0')
iotests.img_info_log(mid)
iotests.qemu_io_log('-c', 'read -P 1 0 %d' % size_short, mid)
iotests.qemu_io_log('-c', 'read -P 0 %d %d' % (size_short, size_diff), mid)
iotests.log('=== Testing QMP active commit (top -> mid) ===')
create_chain()
with create_vm() as vm:
vm.launch()
vm.qmp_log('block-commit', device='top', base_node='mid',
job_id='job0', auto_dismiss=False)
vm.run_job('job0', wait=5)
iotests.img_info_log(mid)
iotests.qemu_io_log('-c', 'read -P 1 0 %d' % size_short, mid)
iotests.qemu_io_log('-c', 'read -P 0 %d %d' % (size_short, size_diff), mid)
iotests.log('== Resize tests ==')
# Use different sizes for different allocation modes:
#
# We want to have at least one test where 32 bit truncation in the size of
# the overlapping area becomes visible. This is covered by the
# prealloc='off' case (1G to 6G is an overlap of 5G).
#
# However, we can only do this for modes that don't preallocate data
# because otherwise we might run out of space on the test host.
#
# We also want to test some unaligned combinations.
for (prealloc, base_size, top_size_old, top_size_new, off) in [
('off', '6G', '1G', '8G', '5G'),
('metadata', '32G', '30G', '33G', '31G'),
('falloc', '10M', '5M', '15M', '9M'),
('full', '16M', '8M', '12M', '11M'),
('off', '384k', '253k', '512k', '253k'),
('off', '400k', '256k', '512k', '336k'),
('off', '512k', '256k', '500k', '436k')]:
iotests.log('=== preallocation=%s ===' % prealloc)
iotests.qemu_img_log('create', '-f', iotests.imgfmt, base, base_size)
iotests.qemu_img_log('create', '-f', iotests.imgfmt, '-b', base, top,
top_size_old)
iotests.qemu_io_log('-c', 'write -P 1 %s 64k' % off, base)
# After this, top_size_old to base_size should be allocated/zeroed.
#
# In theory, leaving base_size to top_size_new unallocated would be
# correct, but in practice, if we zero out anything, we zero out
# everything up to top_size_new.
iotests.qemu_img_log('resize', '-f', iotests.imgfmt,
'--preallocation', prealloc, top, top_size_new)
iotests.qemu_io_log('-c', 'read -P 0 %s 64k' % off, top)
iotests.qemu_io_log('-c', 'map', top)
iotests.qemu_img_log('map', '--output=json', top)

268
tests/qemu-iotests/274.out Normal file
View File

@ -0,0 +1,268 @@
== Commit tests ==
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=2097152 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-mid', fmt=qcow2 size=1048576 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=2097152 backing_file=TEST_DIR/PID-mid cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 2097152/2097152 bytes at offset 0
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
=== Check visible data ===
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
=== Checking allocation status ===
1048576/1048576 bytes allocated at offset 0 bytes
1048576/1048576 bytes allocated at offset 1 MiB
0/1048576 bytes allocated at offset 0 bytes
0/0 bytes allocated at offset 1 MiB
0/1048576 bytes allocated at offset 0 bytes
0/1048576 bytes allocated at offset 1 MiB
=== Checking map ===
[{ "start": 0, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": 327680}]
Offset Length Mapped to File
0 0x200000 0x50000 TEST_DIR/PID-base
[{ "start": 0, "length": 1048576, "depth": 1, "zero": false, "data": true, "offset": 327680}]
Offset Length Mapped to File
0 0x100000 0x50000 TEST_DIR/PID-base
[{ "start": 0, "length": 1048576, "depth": 2, "zero": false, "data": true, "offset": 327680},
{ "start": 1048576, "length": 1048576, "depth": 0, "zero": true, "data": false}]
Offset Length Mapped to File
0 0x100000 0x50000 TEST_DIR/PID-base
=== Testing qemu-img commit (top -> mid) ===
Image committed.
image: TEST_IMG
file format: IMGFMT
virtual size: 2 MiB (2097152 bytes)
cluster_size: 65536
backing file: TEST_DIR/PID-base
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
=== Testing HMP commit (top -> mid) ===
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=2097152 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-mid', fmt=qcow2 size=1048576 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=2097152 backing_file=TEST_DIR/PID-mid cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 2097152/2097152 bytes at offset 0
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
{"execute": "human-monitor-command", "arguments": {"command-line": "commit drive0"}}
{"return": ""}
image: TEST_IMG
file format: IMGFMT
virtual size: 2 MiB (2097152 bytes)
cluster_size: 65536
backing file: TEST_DIR/PID-base
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
=== Testing QMP active commit (top -> mid) ===
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=2097152 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-mid', fmt=qcow2 size=1048576 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=2097152 backing_file=TEST_DIR/PID-mid cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 2097152/2097152 bytes at offset 0
2 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
{"execute": "block-commit", "arguments": {"auto-dismiss": false, "base-node": "mid", "device": "top", "job-id": "job0"}}
{"return": {}}
{"execute": "job-complete", "arguments": {"id": "job0"}}
{"return": {}}
{"data": {"device": "job0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}, "event": "BLOCK_JOB_READY", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
{"data": {"device": "job0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}, "event": "BLOCK_JOB_COMPLETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
{"execute": "job-dismiss", "arguments": {"id": "job0"}}
{"return": {}}
image: TEST_IMG
file format: IMGFMT
virtual size: 2 MiB (2097152 bytes)
cluster_size: 65536
backing file: TEST_DIR/PID-base
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
read 1048576/1048576 bytes at offset 0
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
read 1048576/1048576 bytes at offset 1048576
1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
== Resize tests ==
=== preallocation=off ===
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=6442450944 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=1073741824 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 65536/65536 bytes at offset 5368709120
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Image resized.
read 65536/65536 bytes at offset 5368709120
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
1 GiB (0x40000000) bytes not allocated at offset 0 bytes (0x0)
7 GiB (0x1c0000000) bytes allocated at offset 1 GiB (0x40000000)
[{ "start": 0, "length": 1073741824, "depth": 1, "zero": true, "data": false},
{ "start": 1073741824, "length": 7516192768, "depth": 0, "zero": true, "data": false}]
=== preallocation=metadata ===
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=34359738368 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=32212254720 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 65536/65536 bytes at offset 33285996544
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Image resized.
read 65536/65536 bytes at offset 33285996544
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
30 GiB (0x780000000) bytes not allocated at offset 0 bytes (0x0)
3 GiB (0xc0000000) bytes allocated at offset 30 GiB (0x780000000)
[{ "start": 0, "length": 32212254720, "depth": 1, "zero": true, "data": false},
{ "start": 32212254720, "length": 536870912, "depth": 0, "zero": true, "data": false, "offset": 327680},
{ "start": 32749125632, "length": 536870912, "depth": 0, "zero": true, "data": false, "offset": 537264128},
{ "start": 33285996544, "length": 536870912, "depth": 0, "zero": true, "data": false, "offset": 1074200576},
{ "start": 33822867456, "length": 536870912, "depth": 0, "zero": true, "data": false, "offset": 1611137024},
{ "start": 34359738368, "length": 536870912, "depth": 0, "zero": true, "data": false, "offset": 2148139008},
{ "start": 34896609280, "length": 536870912, "depth": 0, "zero": true, "data": false, "offset": 2685075456}]
=== preallocation=falloc ===
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=10485760 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=5242880 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 65536/65536 bytes at offset 9437184
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Image resized.
read 65536/65536 bytes at offset 9437184
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
5 MiB (0x500000) bytes not allocated at offset 0 bytes (0x0)
10 MiB (0xa00000) bytes allocated at offset 5 MiB (0x500000)
[{ "start": 0, "length": 5242880, "depth": 1, "zero": true, "data": false},
{ "start": 5242880, "length": 10485760, "depth": 0, "zero": true, "data": false, "offset": 327680}]
=== preallocation=full ===
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=16777216 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=8388608 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 65536/65536 bytes at offset 11534336
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Image resized.
read 65536/65536 bytes at offset 11534336
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
8 MiB (0x800000) bytes not allocated at offset 0 bytes (0x0)
4 MiB (0x400000) bytes allocated at offset 8 MiB (0x800000)
[{ "start": 0, "length": 8388608, "depth": 1, "zero": true, "data": false},
{ "start": 8388608, "length": 4194304, "depth": 0, "zero": true, "data": false, "offset": 327680}]
=== preallocation=off ===
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=393216 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=259072 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 65536/65536 bytes at offset 259072
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Image resized.
read 65536/65536 bytes at offset 259072
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
192 KiB (0x30000) bytes not allocated at offset 0 bytes (0x0)
320 KiB (0x50000) bytes allocated at offset 192 KiB (0x30000)
[{ "start": 0, "length": 196608, "depth": 1, "zero": true, "data": false},
{ "start": 196608, "length": 65536, "depth": 0, "zero": false, "data": true, "offset": 327680},
{ "start": 262144, "length": 262144, "depth": 0, "zero": true, "data": false}]
=== preallocation=off ===
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=409600 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=262144 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 65536/65536 bytes at offset 344064
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Image resized.
read 65536/65536 bytes at offset 344064
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
256 KiB (0x40000) bytes not allocated at offset 0 bytes (0x0)
256 KiB (0x40000) bytes allocated at offset 256 KiB (0x40000)
[{ "start": 0, "length": 262144, "depth": 1, "zero": true, "data": false},
{ "start": 262144, "length": 262144, "depth": 0, "zero": true, "data": false}]
=== preallocation=off ===
Formatting 'TEST_DIR/PID-base', fmt=qcow2 size=524288 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Formatting 'TEST_DIR/PID-top', fmt=qcow2 size=262144 backing_file=TEST_DIR/PID-base cluster_size=65536 lazy_refcounts=off refcount_bits=16
wrote 65536/65536 bytes at offset 446464
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Image resized.
read 65536/65536 bytes at offset 446464
64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
256 KiB (0x40000) bytes not allocated at offset 0 bytes (0x0)
244 KiB (0x3d000) bytes allocated at offset 256 KiB (0x40000)
[{ "start": 0, "length": 262144, "depth": 1, "zero": true, "data": false},
{ "start": 262144, "length": 249856, "depth": 0, "zero": true, "data": false}]

View File

@ -286,6 +286,7 @@
270 rw backing quick
272 rw
273 backing quick
274 rw backing
277 rw quick
279 rw backing quick
280 rw migration quick