Bug #48431
closedIf rbd image enabled striping feature, stderr print repeat rate of progress when execu rbd export-diff.
0%
Description
1、I create a rbd image, rbd info is:
- rbd info test_perf/gyt_export
rbd image 'gyt_export':
size 1GiB in 256 objects
order 22 (4MiB objects)
block_name_prefix: rbd_data.f89d5a6b8b4567
format: 2
features: layering, striping, exclusive-lock, object-map, fast-diff, deep-flatten
flags:
create_timestamp: Tue Dec 1 19:30:49 2020
stripe unit: 128KiB
stripe count: 16
2、write 1G date to this rbd image
3、# rbd export-diff gyt_export gyt_exported 2>export_stderr
The export_stderr file have a lot of repeat rate of progress,
if these date input to pipe, it is possible cause pipe_wait.
^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 0% complete...^MExporting image: 1% complete...^MExporting image: 2% complete...^MExporting image: 3% complete...^MExporting image: 4% complete...^MExporting image: 5% complete...^MExporting image: 6% complete...^MExporting image: 7% complete...^MExporting image: 8% complete...^MExporting image: 9% complete...^MExporting image: 10% complete...^MExporting image: 11% complete...^MExporting image: 12% complete...^MExporting image: 6% complete...^MExporting image: 7% complete..
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