raidz_test.1ΒΆ

RAIDZ_TEST(1) General Commands Manual RAIDZ_TEST(1)

raidz_test - raidz implementation verification and benchmarking tool

raidz_test <options>

This manual page documents briefly the raidz_test command.
Purpose of this tool is to run all supported raidz implementation and verify results of all methods. Tool also contains a parameter sweep option where all parameters affecting RAIDZ block are verified (like ashift size, data offset, data size, etc...). The tool also supports a benchmarking mode using -B option.

-h
Print a help summary.
-a ashift (default: 9)
Ashift value.
-o zio_off_shift (default: 0)
Zio offset for raidz block. Offset value is 1 << (zio_off_shift)
-d raidz_data_disks (default: 8)
Number of raidz data disks to use. Additional disks for parity will be used during testing.
-s zio_size_shift (default: 19)
Size of data for raidz block. Size is 1 << (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 -a -o -d -s 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)
This options starts the benchmark mode. 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. When this option is specified tool is supposed to fail all tests. This is to check if tests would properly verify bit-exactness.
-D(ebug)
Debugging option. Specify to attach gdb when SIGSEGV or SIGABRT are received.

ztest (1)

vdev_raidz, created for OpenZFS by Gvozden Nešković <neskovic@gmail.com>
August 24, 2020 OpenZFS