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remove tunable that is not actually a module param #562

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Merged
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Aug 7, 2025
Merged

remove tunable that is not actually a module param #562

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34 changes: 0 additions & 34 deletions docs/Performance and Tuning/Module Parameters.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -233,7 +233,6 @@ debug
- `zfs_zevent_len_max <#zfs-zevent-len-max>`__
- `zil_replay_disable <#zil-replay-disable>`__
- `zio_deadman_log_all <#zio-deadman-log-all>`__
- `zio_decompress_fail_fraction <#zio-decompress-fail-fraction>`__
- `zio_delay_max <#zio-delay-max>`__

dedup
Expand Down Expand Up @@ -1011,7 +1010,6 @@ Index
- `zil_replay_disable <#zil-replay-disable>`__
- `zil_slog_bulk <#zil-slog-bulk>`__
- `zio_deadman_log_all <#zio-deadman-log-all>`__
- `zio_decompress_fail_fraction <#zio-decompress-fail-fraction>`__
- `zio_delay_max <#zio-delay-max>`__
- `zio_dva_throttle_enabled <#zio-dva-throttle-enabled>`__
- `zio_requeue_io_start_cut_in_line <#zio-requeue-io-start-cut-in-line>`__
Expand Down Expand Up @@ -8552,38 +8550,6 @@ See also `zfs_dbgmsg_enable <#zfs-dbgmsg-enable>`__
| Versions Affected | planned for v2 |
+---------------------+-----------------------------------------------+

zio_decompress_fail_fraction
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

If non-zero, ``zio_decompress_fail_fraction`` represents the denominator
of the probability that ZFS should induce a decompression failure. For
instance, for a 5% decompression failure rate, this value should be set
to 20.

+------------------------------+--------------------------------------+
| zio_decompress_fail_fraction | Notes |
+==============================+======================================+
| Tags | `debug <#debug>`__ |
+------------------------------+--------------------------------------+
| When to change | when debugging ZFS internal |
| | compressed buffer code |
+------------------------------+--------------------------------------+
| Data Type | ulong |
+------------------------------+--------------------------------------+
| Units | probability of induced decompression |
| | failure is |
| | 1/``zio_decompress_fail_fraction`` |
+------------------------------+--------------------------------------+
| Range | 0 = do not induce failures, or 1 to |
| | MAX_ULONG |
+------------------------------+--------------------------------------+
| Default | 0 |
+------------------------------+--------------------------------------+
| Change | Dynamic |
+------------------------------+--------------------------------------+
| Versions Affected | planned for v2 |
+------------------------------+--------------------------------------+

zio_slow_io_ms
~~~~~~~~~~~~~~

Expand Down