RAIDZ_TEST(1) General Commands Manual RAIDZ_TEST(1)
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 2ˆzio_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 2ˆzio_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) OpenZFS May 26, 2021 RAIDZ_TEST(1)