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Test LWB buffer overflow for block cloning

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PR#15634 removes 128K into 2x68K LWB split optimization, since it
was found to cause LWB buffer overflow while trying to write 128KB
TX_CLONE_RANGE record with 1022 block pointers into 68KB buffer,
with multiple VDEVs ZIL.

This commit adds a test for this particular scenario by writing
maximum sizes TX_CLONE_RANE record with 1022 block pointers into
68KB buffer, with two SLOG devices.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by:  Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes #15672
This commit is contained in:
Umer Saleem
2023-12-16 03:18:27 +05:00
committed by GitHub
parent 9b1677fb5a
commit dbda45160f
4 changed files with 94 additions and 1 deletions
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tests/test-runner/bin/zts-report.py.in
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@@ -305,6 +305,8 @@ elif sys.platform.startswith('linux'):
['SKIP', cfr_reason],
'block_cloning/block_cloning_replay_encrypted':
['SKIP', cfr_reason],
'block_cloning/block_cloning_lwb_buffer_overflow':
['SKIP', cfr_reason],
'block_cloning/block_cloning_copyfilerange_cross_dataset':
['SKIP', cfr_cross_reason],
'block_cloning/block_cloning_copyfilerange_fallback_same_txg':