raidz_test — raidz
implementation verification and benchmarking tool
raidz_test |
[-StBevTD] [-a
ashift] [-o
zio_off_shift] [-d
raidz_data_disks] [-s
zio_size_shift] [-r
reflow_offset] |
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.
-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.