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Add knob to disable slow io notifications

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Introduce a new vdev property `VDEV_PROP_SLOW_IO_REPORTING` that
allows users to disable notifications for slow devices.
This prevents ZED and/or ZFSD from degrading the pool due to slow
I/O.

Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Mariusz Zaborski <oshogbo@FreeBSD.org>
Closes 17477
This commit is contained in:
Mariusz Zaborski
2025-11-11 19:42:17 +01:00
committed by Brian Behlendorf
parent 41878d57ea
commit 1e8c96d7d5
10 changed files with 127 additions and 32 deletions
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module/zfs/zio.c
+6 -3
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@@ -5569,9 +5569,12 @@ zio_done(zio_t *zio)
zio->io_vd->vdev_stat.vs_slow_ios++;
mutex_exit(&zio->io_vd->vdev_stat_lock);
(void) zfs_ereport_post(FM_EREPORT_ZFS_DELAY,
zio->io_spa, zio->io_vd, &zio->io_bookmark,
zio, 0);
if (zio->io_vd->vdev_slow_io_events) {
(void) zfs_ereport_post(
FM_EREPORT_ZFS_DELAY,
zio->io_spa, zio->io_vd,
&zio->io_bookmark, zio, 0);
}
}
}
}