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iotests: 219: prepare for backup over block-copy 

The further change of moving backup to be a one block-copy call will
make copying chunk-size and cluster-size two separate things. So, even
with 64k cluster sized qcow2 image, default chunk would be 1M.
Test 219 depends on specified chunk-size. Update it for explicit
chunk-size for backup as for mirror.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20210116214705.822267-14-vsementsov@virtuozzo.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2021-01-17 00:46:55 +03:00 committed by Max Reitz
parent 61623f8215
commit 34a5de525a
1 changed files with 7 additions and 6 deletions
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tests/qemu-iotests/219
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@ -204,13 +204,13 @@ with iotests.FilePath('disk.img') as disk_path, \
# but related to this also automatic state transitions like job
# completion), but still get pause points often enough to avoid making this
# test very slow, it's important to have the right ratio between speed and
# buf_size.
# copy-chunk-size.
#
# For backup, buf_size is hard-coded to the source image cluster size (64k),
# so we'll pick the same for mirror. The slice time, i.e. the granularity
# of the rate limiting is 100ms. With a speed of 256k per second, we can
# get four pause points per second. This gives us 250ms per iteration,
# which should be enough to stay deterministic.
# Chose 64k copy-chunk-size both for mirror (by buf_size) and backup (by
# x-max-chunk). The slice time, i.e. the granularity of the rate limiting
# is 100ms. With a speed of 256k per second, we can get four pause points
# per second. This gives us 250ms per iteration, which should be enough to
# stay deterministic.
test_job_lifecycle(vm, 'drive-mirror', has_ready=True, job_args={
'device': 'drive0-node',
@ -227,6 +227,7 @@ with iotests.FilePath('disk.img') as disk_path, \
'target': copy_path,
'sync': 'full',
'speed': 262144,
'x-perf': {'max-chunk': 65536},
'auto-finalize': auto_finalize,
'auto-dismiss': auto_dismiss,
})