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 RAIDZ 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.

NAME

SYNOPSIS

DESCRIPTION

OPTION

SEE ALSO