raidz_test
Section: User Commands (1)
Updated: 2016
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTION
-
- SEE ALSO
-
- AUTHORS
-
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NAME
raidz_test - raidz implementation verification and benchmarking tool
SYNOPSIS
raidz_test <options>
DESCRIPTION
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.
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).
-
-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.
-
-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)
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- Debugging option. Specify to attach gdb when SIGSEGV or SIGABRT are received.
-
SEE ALSO
ztest (1)
AUTHORS
vdev_raidz, created for ZFS on Linux by Gvozden Nešković <neskovic@gmail.com>
Index