| Message ID | 1596118512-424960-2-git-send-email-andrey.shinkevich@virtuozzo.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | iotests: Dump QCOW2 dirty bitmaps metadata | expand |
On 7/30/20 9:15 AM, Andrey Shinkevich wrote: > The simple script creates a QCOW2 image and fills it with some data. > Two bitmaps are created as well. Then the script reads the image header > with extensions from the disk by running the script qcow2.py and dumps > the information to the output. Other entities, such as snapshots, may > be added to the test later. > > Suggested-by: Eric Blake <eblake@redhat.com> > Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> > --- > tests/qemu-iotests/303 | 59 ++++++++++++++++++++++++++++++++++++++++++ > tests/qemu-iotests/303.out | 64 ++++++++++++++++++++++++++++++++++++++++++++++ > tests/qemu-iotests/group | 1 + > 3 files changed, 124 insertions(+) > create mode 100755 tests/qemu-iotests/303 > create mode 100644 tests/qemu-iotests/303.out > +import iotests > +import subprocess > +from iotests import qemu_img_create, qemu_io, file_path, log, filter_qemu_io > + > +iotests.script_initialize(supported_fmts=['qcow2']) > + > +disk = file_path('disk') > +chunk = 1024 * 1024 > + > + > +def create_bitmap(bitmap_number, disabled): > + granularity = 1 << (14 + bitmap_number) > + bitmap_name = 'bitmap-' + str(bitmap_number) > + vm = iotests.VM().add_drive(disk) > + vm.launch() > + vm.qmp_log('block-dirty-bitmap-add', node='drive0', name=bitmap_name, > + granularity=granularity, persistent=True, disabled=disabled) > + vm.shutdown() Would it be any easier to use qemu-img bitmap here instead of firing up a full VM? At any rate, this is a nice starting point for tracking what the rest of your series improves. Reviewed-by: Eric Blake <eblake@redhat.com>
On 30.07.2020 22:05, Eric Blake wrote: > On 7/30/20 9:15 AM, Andrey Shinkevich wrote: >> The simple script creates a QCOW2 image and fills it with some data. >> Two bitmaps are created as well. Then the script reads the image header >> with extensions from the disk by running the script qcow2.py and dumps >> the information to the output. Other entities, such as snapshots, may >> be added to the test later. >> >> Suggested-by: Eric Blake <eblake@redhat.com> >> Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> >> --- >> tests/qemu-iotests/303 | 59 >> ++++++++++++++++++++++++++++++++++++++++++ >> tests/qemu-iotests/303.out | 64 >> ++++++++++++++++++++++++++++++++++++++++++++++ >> tests/qemu-iotests/group | 1 + >> 3 files changed, 124 insertions(+) >> create mode 100755 tests/qemu-iotests/303 >> create mode 100644 tests/qemu-iotests/303.out > >> +import iotests >> +import subprocess >> +from iotests import qemu_img_create, qemu_io, file_path, log, >> filter_qemu_io >> + >> +iotests.script_initialize(supported_fmts=['qcow2']) >> + >> +disk = file_path('disk') >> +chunk = 1024 * 1024 >> + >> + >> +def create_bitmap(bitmap_number, disabled): >> + granularity = 1 << (14 + bitmap_number) >> + bitmap_name = 'bitmap-' + str(bitmap_number) >> + vm = iotests.VM().add_drive(disk) >> + vm.launch() >> + vm.qmp_log('block-dirty-bitmap-add', node='drive0', >> name=bitmap_name, >> + granularity=granularity, persistent=True, >> disabled=disabled) >> + vm.shutdown() > > Would it be any easier to use qemu-img bitmap here instead of firing > up a full VM? I agree, you are right. I'll take it into account for the next version, if any. Thank you for your R-b. Andrey > > At any rate, this is a nice starting point for tracking what the rest > of your series improves. > > Reviewed-by: Eric Blake <eblake@redhat.com> >
30.07.2020 17:15, Andrey Shinkevich wrote: > The simple script creates a QCOW2 image and fills it with some data. > Two bitmaps are created as well. Then the script reads the image header > with extensions from the disk by running the script qcow2.py and dumps > the information to the output. Other entities, such as snapshots, may > be added to the test later. > > Suggested-by: Eric Blake <eblake@redhat.com> > Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> > --- > tests/qemu-iotests/303 | 59 ++++++++++++++++++++++++++++++++++++++++++ > tests/qemu-iotests/303.out | 64 ++++++++++++++++++++++++++++++++++++++++++++++ > tests/qemu-iotests/group | 1 + > 3 files changed, 124 insertions(+) > create mode 100755 tests/qemu-iotests/303 > create mode 100644 tests/qemu-iotests/303.out > > diff --git a/tests/qemu-iotests/303 b/tests/qemu-iotests/303 > new file mode 100755 > index 0000000..3c7a611 > --- /dev/null > +++ b/tests/qemu-iotests/303 > @@ -0,0 +1,59 @@ > +#!/usr/bin/env python3 > +# > +# Test for dumping of qcow2 image metadata > +# > +# Copyright (c) 2020 Virtuozzo International GmbH > +# > +# 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/>. > +# > + > +import iotests > +import subprocess > +from iotests import qemu_img_create, qemu_io, file_path, log, filter_qemu_io > + > +iotests.script_initialize(supported_fmts=['qcow2']) > + > +disk = file_path('disk') > +chunk = 1024 * 1024 > + > + > +def create_bitmap(bitmap_number, disabled): > + granularity = 1 << (14 + bitmap_number) > + bitmap_name = 'bitmap-' + str(bitmap_number) > + vm = iotests.VM().add_drive(disk) > + vm.launch() > + vm.qmp_log('block-dirty-bitmap-add', node='drive0', name=bitmap_name, > + granularity=granularity, persistent=True, disabled=disabled) > + vm.shutdown() > + > + > +def write_to_disk(offset, size): > + write = f'write {offset} {size}' > + log(qemu_io('-c', write, disk), filters=[filter_qemu_io]) > + > + > +def add_bitmap(num, begin, end, disabled): > + log(f'Add bitmap {num}') > + create_bitmap(num, disabled) > + for i in range(begin, end): > + write_to_disk((i-1) * chunk, chunk) a bit unusual to count chunks starting from "1".. also, any difference with just write_to_disk((i-1) * chunk, (end-begin) * chunk) ? > + log('') > + > + > +qemu_img_create('-f', iotests.imgfmt, disk, '10M') > + > +add_bitmap(1, 1, 7, False) > +add_bitmap(2, 7, 9, True) > +dump = ['qcow2.py', f'{disk}', 'dump-header'] No reason to put disk into f-string, it's a string anyway: f'{disk}' is equal to just disk. > +subprocess.run(dump) And you may use just subprocess.run(['qcow2.py', disk, 'dump-header']) without additional variable. Still, I'm OK with it as is: Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
On 05.08.2020 14:23, Vladimir Sementsov-Ogievskiy wrote: > 30.07.2020 17:15, Andrey Shinkevich wrote: >> The simple script creates a QCOW2 image and fills it with some data. >> Two bitmaps are created as well. Then the script reads the image header >> with extensions from the disk by running the script qcow2.py and dumps >> the information to the output. Other entities, such as snapshots, may >> be added to the test later. >> >> Suggested-by: Eric Blake <eblake@redhat.com> >> Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> >> --- >> tests/qemu-iotests/303 | 59 >> ++++++++++++++++++++++++++++++++++++++++++ >> tests/qemu-iotests/303.out | 64 >> ++++++++++++++++++++++++++++++++++++++++++++++ >> tests/qemu-iotests/group | 1 + >> 3 files changed, 124 insertions(+) >> create mode 100755 tests/qemu-iotests/303 >> create mode 100644 tests/qemu-iotests/303.out >> >> diff --git a/tests/qemu-iotests/303 b/tests/qemu-iotests/303 >> new file mode 100755 >> index 0000000..3c7a611 >> --- /dev/null >> +++ b/tests/qemu-iotests/303 >> @@ -0,0 +1,59 @@ >> +#!/usr/bin/env python3 >> +# >> +# Test for dumping of qcow2 image metadata >> +# >> +# Copyright (c) 2020 Virtuozzo International GmbH >> +# >> +# 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/>. >> +# >> + >> +import iotests >> +import subprocess >> +from iotests import qemu_img_create, qemu_io, file_path, log, >> filter_qemu_io >> + >> +iotests.script_initialize(supported_fmts=['qcow2']) >> + >> +disk = file_path('disk') >> +chunk = 1024 * 1024 >> + >> + >> +def create_bitmap(bitmap_number, disabled): >> + granularity = 1 << (14 + bitmap_number) >> + bitmap_name = 'bitmap-' + str(bitmap_number) >> + vm = iotests.VM().add_drive(disk) >> + vm.launch() >> + vm.qmp_log('block-dirty-bitmap-add', node='drive0', >> name=bitmap_name, >> + granularity=granularity, persistent=True, >> disabled=disabled) >> + vm.shutdown() >> + >> + >> +def write_to_disk(offset, size): >> + write = f'write {offset} {size}' >> + log(qemu_io('-c', write, disk), filters=[filter_qemu_io]) >> + >> + >> +def add_bitmap(num, begin, end, disabled): >> + log(f'Add bitmap {num}') >> + create_bitmap(num, disabled) >> + for i in range(begin, end): >> + write_to_disk((i-1) * chunk, chunk) > > a bit unusual to count chunks starting from "1".. > > also, any difference with just > > write_to_disk((i-1) * chunk, (end-begin) * chunk) > > ? > QEMU-IMG limits the maximum number of bytes written with one command by ... 2M, if I am not wrong. Andrey >> + log('') >> + >> + >> +qemu_img_create('-f', iotests.imgfmt, disk, '10M') >> + >> +add_bitmap(1, 1, 7, False) >> +add_bitmap(2, 7, 9, True) >> +dump = ['qcow2.py', f'{disk}', 'dump-header'] > > No reason to put disk into f-string, it's a string anyway: f'{disk}' > is equal to just disk. Thanks > >> +subprocess.run(dump) > > > And you may use just > > subprocess.run(['qcow2.py', disk, 'dump-header']) > > without additional variable. Yes, but further adding the '-j' key to the list looks more elegant to me )) Andrey > > > Still, I'm OK with it as is: > Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> > >
diff --git a/tests/qemu-iotests/303 b/tests/qemu-iotests/303 new file mode 100755 index 0000000..3c7a611 --- /dev/null +++ b/tests/qemu-iotests/303 @@ -0,0 +1,59 @@ +#!/usr/bin/env python3 +# +# Test for dumping of qcow2 image metadata +# +# Copyright (c) 2020 Virtuozzo International GmbH +# +# 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/>. +# + +import iotests +import subprocess +from iotests import qemu_img_create, qemu_io, file_path, log, filter_qemu_io + +iotests.script_initialize(supported_fmts=['qcow2']) + +disk = file_path('disk') +chunk = 1024 * 1024 + + +def create_bitmap(bitmap_number, disabled): + granularity = 1 << (14 + bitmap_number) + bitmap_name = 'bitmap-' + str(bitmap_number) + vm = iotests.VM().add_drive(disk) + vm.launch() + vm.qmp_log('block-dirty-bitmap-add', node='drive0', name=bitmap_name, + granularity=granularity, persistent=True, disabled=disabled) + vm.shutdown() + + +def write_to_disk(offset, size): + write = f'write {offset} {size}' + log(qemu_io('-c', write, disk), filters=[filter_qemu_io]) + + +def add_bitmap(num, begin, end, disabled): + log(f'Add bitmap {num}') + create_bitmap(num, disabled) + for i in range(begin, end): + write_to_disk((i-1) * chunk, chunk) + log('') + + +qemu_img_create('-f', iotests.imgfmt, disk, '10M') + +add_bitmap(1, 1, 7, False) +add_bitmap(2, 7, 9, True) +dump = ['qcow2.py', f'{disk}', 'dump-header'] +subprocess.run(dump) diff --git a/tests/qemu-iotests/303.out b/tests/qemu-iotests/303.out new file mode 100644 index 0000000..8b11169 --- /dev/null +++ b/tests/qemu-iotests/303.out @@ -0,0 +1,64 @@ +Add bitmap 1 +{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": false, "granularity": 32768, "name": "bitmap-1", "node": "drive0", "persistent": true}} +{"return": {}} +wrote 1048576/1048576 bytes at offset 0 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +wrote 1048576/1048576 bytes at offset 1048576 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +wrote 1048576/1048576 bytes at offset 2097152 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +wrote 1048576/1048576 bytes at offset 3145728 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +wrote 1048576/1048576 bytes at offset 4194304 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +wrote 1048576/1048576 bytes at offset 5242880 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + + +Add bitmap 2 +{"execute": "block-dirty-bitmap-add", "arguments": {"disabled": true, "granularity": 65536, "name": "bitmap-2", "node": "drive0", "persistent": true}} +{"return": {}} +wrote 1048576/1048576 bytes at offset 6291456 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +wrote 1048576/1048576 bytes at offset 7340032 +1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + + +magic 0x514649fb +version 3 +backing_file_offset 0x0 +backing_file_size 0x0 +cluster_bits 16 +size 10485760 +crypt_method 0 +l1_size 1 +l1_table_offset 0x30000 +refcount_table_offset 0x10000 +refcount_table_clusters 1 +nb_snapshots 0 +snapshot_offset 0x0 +incompatible_features [] +compatible_features [] +autoclear_features [0] +refcount_order 4 +header_length 112 + +Header extension: +magic 0x6803f857 (Feature table) +length 336 +data <binary> + +Header extension: +magic 0x23852875 (Bitmaps) +length 24 +nb_bitmaps 2 +reserved32 0 +bitmap_directory_size 0x40 +bitmap_directory_offset 0x9d0000 + diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index 025ed52..7e12e1f 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -309,3 +309,4 @@ 299 auto quick 301 backing quick 302 quick +303 rw quick
The simple script creates a QCOW2 image and fills it with some data. Two bitmaps are created as well. Then the script reads the image header with extensions from the disk by running the script qcow2.py and dumps the information to the output. Other entities, such as snapshots, may be added to the test later. Suggested-by: Eric Blake <eblake@redhat.com> Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com> --- tests/qemu-iotests/303 | 59 ++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/303.out | 64 ++++++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/group | 1 + 3 files changed, 124 insertions(+) create mode 100755 tests/qemu-iotests/303 create mode 100644 tests/qemu-iotests/303.out