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raidz_test.1: modernise
Also re-add articles left out by the slav who wrote this Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz> Closes #12125
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Brian Behlendorf
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'\" t
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.\"
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.\" CDDL HEADER START
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.\"
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@ -19,88 +18,84 @@
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.\"
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.\" CDDL HEADER END
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.\"
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.\"
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.\" Copyright (c) 2016 Gvozden Nešković. All rights reserved.
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.\"
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.TH RAIDZ_TEST 1 "Aug 24, 2020" OpenZFS
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.SH NAME
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\fBraidz_test\fR \- raidz implementation verification and benchmarking tool
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.SH SYNOPSIS
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.LP
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.BI "raidz_test <options>"
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.SH DESCRIPTION
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.LP
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This manual page documents briefly the \fBraidz_test\fR command.
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.LP
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Purpose of this tool is to run all supported raidz implementation and verify
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results of all methods. Tool also contains a parameter sweep option where all
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parameters affecting RAIDZ block are verified (like ashift size, data offset,
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data size, etc...).
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The tool also supports a benchmarking mode using -B option.
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.SH OPTION
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.HP
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.BI "\-h" ""
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.IP
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.Dd May 26, 2021
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.Dt RAIDZ_TEST 1
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.Os
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.
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.Sh NAME
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.Nm raidz_test
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.Nd raidz implementation verification and benchmarking tool
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.Sh SYNOPSIS
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.Nm
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.Op Fl StBevTD
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.Op Fl a Ar ashift
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.Op Fl o Ar zio_off_shift
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.Op Fl d Ar raidz_data_disks
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.Op Fl s Ar zio_size_shift
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.Op Fl r Ar reflow_offset
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.
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.Sh DESCRIPTION
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The purpose of this tool is to run all supported raidz implementation and verify
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the results of all methods.
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It also contains a parameter sweep option where all
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parameters affecting a RAIDZ block are verified (like ashift size, data offset,
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data size, etc.).
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The tool also supports a benchmarking mode using the
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.Fl B
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option.
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.
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.Sh OPTION
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.Bl -tag -width "-B(enchmark)"
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.It Fl h
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Print a help summary.
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.HP
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.BI "\-a" " ashift (default: 9)"
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.IP
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.It Fl a Ar ashift No (default: Sy 9 )
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Ashift value.
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.HP
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.BI "\-o" " zio_off_shift" " (default: 0)"
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.IP
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Zio offset for raidz block. Offset value is 1 << (zio_off_shift)
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.HP
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.BI "\-d" " raidz_data_disks" " (default: 8)"
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.IP
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Number of raidz data disks to use. Additional disks for parity will be used
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during testing.
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.HP
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.BI "\-s" " zio_size_shift" " (default: 19)"
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.IP
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Size of data for raidz block. Size is 1 << (zio_size_shift).
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.HP
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.BI "\-r" " reflow_offset" " (default: uint max)"
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.IP
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Set raidz expansion offset. The expanded raidz map allocation function will
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.It Fl o Ar zio_off_shift No (default: Sy 0 )
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ZIO offset for each raidz block.
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The offset's value is
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.Sy 1 << zio_off_shift .
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.It Fl d Ar raidz_data_disks No (default: Sy 8 )
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Number of raidz data disks to use.
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Additional disks will be used for parity.
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.It Fl s Ar zio_size_shift No (default: Sy 19 )
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Size of data for raidz block.
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The real size is
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.Sy 1 << zio_size_shift .
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.It Fl r Ar reflow_offset No (default: Sy uint max )
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Set raidz expansion offset.
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The expanded raidz map allocation function will
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produce different map configurations depending on this value.
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.HP
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.BI "\-S(weep)"
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.IP
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Sweep parameter space while verifying the raidz implementations. This option
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will exhaust all most of valid values for -a -o -d -s options. Runtime using
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this option will be long.
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.HP
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.BI "\-t(imeout)"
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.IP
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Wall time for sweep test in seconds. The actual runtime could be longer.
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.HP
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.BI "\-B(enchmark)"
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.IP
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This options starts the benchmark mode. All implementations are benchmarked
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using increasing per disk data size. Results are given as throughput per disk,
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measured in MiB/s.
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.HP
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.BI "\-e(xpansion)"
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.IP
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.It Fl S Ns No (weep)
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Sweep parameter space while verifying the raidz implementations.
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This option
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will exhaust all most of valid values for the
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.Fl aods
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options.
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Runtime using this option will be long.
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.It Fl t Ns No (imeout)
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Wall time for sweep test in seconds.
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The actual runtime could be longer.
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.It Fl B Ns No (enchmark)
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All implementations are benchmarked using increasing per disk data size.
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Results are given as throughput per disk, measured in MiB/s.
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.It Fl e Ns No (xpansion)
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Use expanded raidz map allocation function.
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.HP
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.BI "\-v(erbose)"
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.IP
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.It Fl v Ns No (erbose)
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Increase verbosity.
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.HP
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.BI "\-T(est the test)"
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.IP
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Debugging option. When this option is specified tool is supposed to fail
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all tests. This is to check if tests would properly verify bit-exactness.
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.HP
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.BI "\-D(ebug)"
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.IP
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Debugging option. Specify to attach gdb when SIGSEGV or SIGABRT are received.
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.HP
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.SH "SEE ALSO"
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.BR "ztest (1)"
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.SH "AUTHORS"
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vdev_raidz, created for OpenZFS by Gvozden Nešković <neskovic@gmail.com>
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.It Fl T Ns No (est the test)
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Debugging option: fail all tests.
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This is to check if tests would properly verify bit-exactness.
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.It Fl D Ns No (ebug)
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Debugging option: attach
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.Xr gdb 1
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when
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.Sy SIGSEGV
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or
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.Sy SIGABRT
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are received.
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.El
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.
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.Sh "SEE ALSO"
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.Xr ztest 1
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