FreeBSD/Linux Kernel Cross Reference
sys/contrib/openzfs/man/man1/raidz_test.1

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    .\" Copyright (c) 2016 Gvozden Nešković. All rights reserved.
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    .Dd May 26, 2021
    .Dt RAIDZ_TEST 1
    .Os
    .
    .Sh NAME
    .Nm raidz_test
    .Nd raidz implementation verification and benchmarking tool
    .Sh SYNOPSIS
    .Nm
    .Op Fl StBevTD
    .Op Fl a Ar ashift
    .Op Fl o Ar zio_off_shift
    .Op Fl d Ar raidz_data_disks
    .Op Fl s Ar zio_size_shift
    .Op Fl r Ar reflow_offset
    .
    .Sh DESCRIPTION
    The purpose of this tool is to run all supported raidz implementation and verify
    the results of all methods.
    It also contains a parameter sweep option where all
    parameters affecting a RAID-Z block are verified (like ashift size, data offset,
    data size, etc.).
    The tool also supports a benchmarking mode using the
    .Fl B
    option.
    .
    .Sh OPTION
    .Bl -tag -width "-B(enchmark)"
    .It Fl h
    Print a help summary.
    .It Fl a Ar ashift Pq default: Sy 9
    Ashift value.
    .It Fl o Ar zio_off_shift Pq default: Sy 0
    ZIO offset for each raidz block.
    The offset's value is
    .Em 2^zio_off_shift .
    .It Fl d Ar raidz_data_disks Pq default: Sy 8
    Number of raidz data disks to use.
    Additional disks will be used for parity.
    .It Fl s Ar zio_size_shift Pq default: Sy 19
    Size of data for raidz block.
    The real size is
    .Em 2^zio_size_shift .
    .It Fl r Ar reflow_offset Pq default: Sy uint max
    Set raidz expansion offset.
    The expanded raidz map allocation function will
    produce different map configurations depending on this value.
    .It Fl S Ns Pq weep
    Sweep parameter space while verifying the raidz implementations.
    This option
    will exhaust all most of valid values for the
    .Fl aods
    options.
    Runtime using this option will be long.
    .It Fl t Ns Pq imeout
    Wall time for sweep test in seconds.
    The actual runtime could be longer.
    .It Fl B Ns Pq enchmark
    All implementations are benchmarked using increasing per disk data size.
    Results are given as throughput per disk, measured in MiB/s.
    .It Fl e Ns Pq xpansion
    Use expanded raidz map allocation function.
    .It Fl v Ns Pq erbose
    Increase verbosity.
    .It Fl T Ns Pq est the test
    Debugging option: fail all tests.
    This is to check if tests would properly verify bit-exactness.
    .It Fl D Ns Pq ebug
    Debugging option: attach
    .Xr gdb 1
    when
    .Sy SIGSEGV
    or
    .Sy SIGABRT
    are received.
    .El
    .
   .Sh "SEE ALSO"
   .Xr ztest 1

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