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Darrick J. Wong
9184ca155d
Perform copy-on-writes at random offsets to stress the CoW allocation system. Assess the effectiveness of the extent size hint at combatting fragmentation via unshare, a rewrite, and no-op after the random writes. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
19 lines
676 B
Plaintext
19 lines
676 B
Plaintext
QA output created by 207
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Format and mount
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Create the original files
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Set extsz and cowextsz on zero byte file
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Set extsz and cowextsz on 1Mbyte file
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xfs_io: XFS_IOC_FSSETXATTR SCRATCH_MNT/test-207/file2: Invalid argument
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Check extsz and cowextsz settings on zero byte file
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[1048576] SCRATCH_MNT/test-207/file1
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[1048576] SCRATCH_MNT/test-207/file1
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Check extsz and cowextsz settings on 1Mbyte file
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[0] SCRATCH_MNT/test-207/file2
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[1048576] SCRATCH_MNT/test-207/file2
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Set cowextsize and check flag
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fsxattr.xflags = 0x20000 [---------------C]
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[1048576] SCRATCH_MNT/test-207/file3
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Unset cowextsize and check flag
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fsxattr.xflags = 0x0 [----------------]
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[0] SCRATCH_MNT/test-207/file3
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