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zinject: Introduce ready delay fault injection

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This adds a pause to the ZIO pipeline in the ready stage for
matching I/O (data, dnode, or raw bookmark).

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Rob Norris <robn@despairlabs.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Akash B <akash-b@hpe.com>
Signed-off-by: Robert Evans <evansr@google.com>
Closes #17787
This commit is contained in:
Robert Evans
2025-10-01 15:17:13 -04:00
committed by Tony Hutter
parent 073b34b3ee
commit ead0fb736d
6 changed files with 134 additions and 11 deletions
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module/zfs/zio.c
+10
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@@ -5305,6 +5305,16 @@ zio_ready(zio_t *zio)
return (NULL);
}
if (zio_injection_enabled) {
hrtime_t target = zio_handle_ready_delay(zio);
if (target != 0 && zio->io_target_timestamp == 0) {
zio->io_stage >>= 1;
zio->io_target_timestamp = target;
zio_delay_interrupt(zio);
return (NULL);
}
}
if (zio->io_ready) {
ASSERT(IO_IS_ALLOCATING(zio));
ASSERT(BP_GET_BIRTH(bp) == zio->io_txg ||