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events: include zio type in IO error reports

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Usually the IO type can be inferred from the other fields (in
particular, priority and flags) sometimes it's not easy to see. This is
just another little debug helper.

    May 27 2025 00:54:54.024110493 ereport.fs.zfs.data
            class = "ereport.fs.zfs.data"
            ena = 0x1f5ecfae600801
            ...
            zio_delta = 0x0
            zio_type = 0x2 [WRITE]
            zio_priority = 0x3 [ASYNC_WRITE]
            zio_objset = 0x0

Document zio_type and zio_priority.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #17381
This commit is contained in:
Rob Norris
2025-05-31 00:29:29 +10:00
committed by GitHub
parent 0c94d3838d
commit 44e3266894
8 changed files with 85 additions and 2 deletions
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lib/libzfs/libzfs.abi
+7
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@@ -466,6 +466,7 @@
<elf-symbol name='zfs_valstr_zio_stage' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_valstr_zio_stage_bits' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_valstr_zio_stage_pairs' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_valstr_zio_type' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_version_kernel' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_version_nvlist' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
<elf-symbol name='zfs_version_print' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -10080,6 +10081,12 @@
<parameter type-id='b59d7dce' name='outlen'/>
<return type-id='b59d7dce'/>
</function-decl>
<function-decl name='zfs_valstr_zio_type' mangled-name='zfs_valstr_zio_type' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_valstr_zio_type'>
<parameter type-id='95e97e5e' name='v'/>
<parameter type-id='26a90f95' name='out'/>
<parameter type-id='b59d7dce' name='outlen'/>
<return type-id='b59d7dce'/>
</function-decl>
<function-decl name='zfs_valstr_zio_priority' mangled-name='zfs_valstr_zio_priority' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zfs_valstr_zio_priority'>
<parameter type-id='95e97e5e' name='v'/>
<parameter type-id='26a90f95' name='out'/>