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vdevprops.7: fix slow_io_t default value in documentation#18359

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chrislongros wants to merge 1 commit intoopenzfs:masterfrom
chrislongros:fix-slow-io-default
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vdevprops.7: fix slow_io_t default value in documentation#18359
chrislongros wants to merge 1 commit intoopenzfs:masterfrom
chrislongros:fix-slow-io-default

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@chrislongros
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@chrislongros chrislongros commented Mar 20, 2026

Summary

  • The man page stated that the default threshold for all events is 10 errors in 600 seconds
  • However, slow_io_t defaults to 30 seconds, not 600 (see DEFAULT_SLOW_IO_T in cmd/zed/agents/zfs_diagnosis.c)
  • Correct the documentation to distinguish slow I/O defaults from checksum/I/O defaults

Closes #18305

Testing

  • CI checkstyle passes

Signed-off-by: Christos Longros chris.longros@gmail.com

The man page stated that the default threshold for all events is
10 errors in 600 seconds. However, the slow I/O default is 10
errors in 30 seconds (DEFAULT_SLOW_IO_T in zfs_diagnosis.c).
Correct the documentation to reflect the actual defaults.

Signed-off-by: Christos Longros <chris.longros@gmail.com>
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amotin commented Mar 23, 2026

May be I am not looking seep enough, but I don't see DEFAULT_SLOW_IO_T used anywhere. On a quick ignorant look it seems if the properties are not set, the function just does not apply.

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