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Inject zinject(8) a percentage amount of dev errs

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In the original form of device error injection, it was an all or nothing
situation.  To help simulate intermittent error conditions, you can now
specify a real number percentage value. This is also very useful for our
ZFS fault diagnosis testing and for injecting intermittent errors during
load testing.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Don Brady <don.brady@intel.com>
Closes #6227
This commit is contained in:
Don Brady
2017-06-16 18:21:11 -06:00
committed by Brian Behlendorf
parent 05a5357a6c
commit 0241e491a0
4 changed files with 76 additions and 20 deletions
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man/man8/zinject.8
+3 -3
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@@ -76,7 +76,7 @@ create 3 lanes on the device; one lane with a latency
of 10 ms and two lanes with a 25 ms latency.
.TP
.B "zinject \-d \fIvdev\fB [\-e \fIdevice_error\fB] [\-L \fIlabel_error\fB] [\-T \fIfailure\fB] [\-F] \fIpool\fB"
.B "zinject \-d \fIvdev\fB [\-e \fIdevice_error\fB] [\-L \fIlabel_error\fB] [\-T \fIfailure\fB] [\-f \fIfrequency\fB] [\-F] \fIpool\fB"
Force a vdev error.
.TP
.B "zinject \-I [\-s \fIseconds\fB | \-g \fItxgs\fB] \fIpool\fB"
@@ -113,8 +113,8 @@ Specify
.BR "nxio" " for an ENXIO error where reopening the device will fail."
.TP
.BI "\-f" " frequency"
Only inject errors a fraction of the time. Expressed as an integer
percentage between 1 and 100.
Only inject errors a fraction of the time. Expressed as a real number
percentage between 0.0001 and 100.
.TP
.BI "\-F"
Fail faster. Do fewer checks.