NAME

     raidz_test — raidz implementation verification and benchmarking tool

SYNOPSIS

     raidz_test [-StBevTD] [-a ashift] [-o zio_off_shift] [-d raidz_data_disks]
                [-s zio_size_shift] [-r reflow_offset]

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 -B option.

OPTION

     -h            Print a help summary.

     -a ashift (default: 9)
                   Ashift value.

     -o zio_off_shift (default: 0)
                   ZIO offset for each raidz block.  The offset's value is 2^zio_off_shift.

     -d raidz_data_disks (default: 8)
                   Number of raidz data disks to use.  Additional disks will be used for parity.

     -s zio_size_shift (default: 19)
                   Size of data for raidz block.  The real size is 2^zio_size_shift.

     -r reflow_offset (default: uint max)
                   Set raidz expansion offset.  The expanded raidz map allocation function will
                   produce different map configurations depending on this value.

     -S(weep)      Sweep parameter space while verifying the raidz implementations.  This option
                   will exhaust all most of valid values for the -aods options.  Runtime using
                   this option will be long.

     -t(imeout)    Wall time for sweep test in seconds.  The actual runtime could be longer.

     -B(enchmark)  All implementations are benchmarked using increasing per disk data size.
                   Results are given as throughput per disk, measured in MiB/s.

     -e(xpansion)  Use expanded raidz map allocation function.

     -v(erbose)    Increase verbosity.

     -T(est the test)
                   Debugging option: fail all tests.  This is to check if tests would properly
                   verify bit-exactness.

     -D(ebug)      Debugging option: attach gdb(1) when SIGSEGV or SIGABRT are received.

SEE ALSO

     ztest(1)