OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

iotests: Test reopening multiple devices at the same time

Browse Source 
This test swaps the images used by two active block devices.

This is now possible thanks to the new ability to run
x-blockdev-reopen on multiple devices at the same time.

Signed-off-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20210708114709.206487-6-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Alberto Garcia 2021-07-08 13:47:08 +02:00 committed by Kevin Wolf
parent 3908b7a899
commit 246ebc2d6a
2 changed files with 49 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
tests/qemu-iotests/245
View File

@ -649,6 +649,53 @@ class TestBlockdevReopen(iotests.QMPTestCase):
'-c', 'read -P 0x40 0x40008 1',
'-c', 'read -P 0x80 0x40010 1', hd_path[0])
# Swap the disk images of two active block devices
def test_swap_files(self):
# Add hd0 and hd2 (none of them with backing files)
opts0 = hd_opts(0)
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts0)
self.assert_qmp(result, 'return', {})
opts2 = hd_opts(2)
result = self.vm.qmp('blockdev-add', conv_keys = False, **opts2)
self.assert_qmp(result, 'return', {})
# Write different data to both block devices
self.run_qemu_io("hd0", "write -P 0xa0 0 1k")
self.run_qemu_io("hd2", "write -P 0xa2 0 1k")
# Check that the data reads correctly
self.run_qemu_io("hd0", "read -P 0xa0 0 1k")
self.run_qemu_io("hd2", "read -P 0xa2 0 1k")
# It's not possible to make a block device use an image that
# is already being used by the other device.
self.reopen(opts0, {'file': 'hd2-file'},
"Permission conflict on node 'hd2-file': permissions "
"'write, resize' are both required by node 'hd2' (uses "
"node 'hd2-file' as 'file' child) and unshared by node "
"'hd0' (uses node 'hd2-file' as 'file' child).")
self.reopen(opts2, {'file': 'hd0-file'},
"Permission conflict on node 'hd0-file': permissions "
"'write, resize' are both required by node 'hd0' (uses "
"node 'hd0-file' as 'file' child) and unshared by node "
"'hd2' (uses node 'hd0-file' as 'file' child).")
# But we can swap the images if we reopen both devices at the
# same time
opts0['file'] = 'hd2-file'
opts2['file'] = 'hd0-file'
self.reopenMultiple([opts0, opts2])
self.run_qemu_io("hd0", "read -P 0xa2 0 1k")
self.run_qemu_io("hd2", "read -P 0xa0 0 1k")
# And we can of course come back to the original state
opts0['file'] = 'hd0-file'
opts2['file'] = 'hd2-file'
self.reopenMultiple([opts0, opts2])
self.run_qemu_io("hd0", "read -P 0xa0 0 1k")
self.run_qemu_io("hd2", "read -P 0xa2 0 1k")
# Misc reopen tests with different block drivers
@iotests.skip_if_unsupported(['quorum', 'throttle'])
def test_misc_drivers(self):

4
tests/qemu-iotests/245.out
View File

@ -17,8 +17,8 @@ read 1/1 bytes at offset 262152
read 1/1 bytes at offset 262160
1 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
..............
...............
----------------------------------------------------------------------
Ran 24 tests
Ran 25 tests
OK