--- /dev/null
+'\" t
+.\"
+.\" CDDL HEADER START
+.\"
+.\" The contents of this file are subject to the terms of the
+.\" Common Development and Distribution License (the "License").
+.\" You may not use this file except in compliance with the License.
+.\"
+.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+.\" or http://www.opensolaris.org/os/licensing.
+.\" See the License for the specific language governing permissions
+.\" and limitations under the License.
+.\"
+.\" When distributing Covered Code, include this CDDL HEADER in each
+.\" file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+.\" If applicable, add the following below this CDDL HEADER, with the
+.\" fields enclosed by brackets "[]" replaced with your own identifying
+.\" information: Portions Copyright [yyyy] [name of copyright owner]
+.\"
+.\" CDDL HEADER END
+.\"
+.\"
+.\" Copyright 2013 Darik Horn <dajhorn@vanadac.com>. All rights reserved.
+.\"
+.TH zpios 1 "2013 FEB 28" "ZFS on Linux" "User Commands"
+
+.SH NAME
+zpios \- Directly test the DMU.
+.SH SYNOPSIS
+.LP
+.BI "zpios [options] <\-p " pool ">"
+
+.SH DESCRIPTION
+This utility runs in-kernel DMU performance and stress tests that do
+not depend on the ZFS Posix Layer ("ZPL").
+
+.SH OPTIONS
+.HP
+.BI "\-s" " regex" ", \-\-threadcount" " regex"
+.IP
+Start this many threads for each test series, specified as a comma
+delimited regular expression. (eg: "-s 1,2,3")
+.IP
+This option is mutually exclusive with the \fBthreadcount_*\fR
+options.
+.HP
+.BI "\-l" " regex_low" ", \-\-threadcount_low" " regex_low"
+.HP
+.BI "\-h" " regex_high" ", \-\-threadcount_high" " regex_high"
+.HP
+.BI "\-e" " regex_incr" ", \-\-threadcount_incr" " regex_incr"
+.IP
+Start \fIregex_low\fR threads for the first test,
+add \fIregex_incr\fR threads for each subsequent test,
+and start \fIregex_high\fR threads for the last test.
+.IP
+These three options must be specified together and are mutually
+exclusive with the \fBthreadcount\fR option.
+.HP
+.BI "\-n" " regex" ", \-\-regioncount" " regex"
+.IP
+Create this many regions for each test series, specified as a comma
+delimited regular expression. (eg: "-n 512,4096,65536")
+.IP
+This option is mutually exclusive with the \fBregioncount_*\fR
+options.
+.HP
+.BI "\-i" " regex_low" ", \-\-regioncount_low" " regex_low"
+.HP
+.BI "\-j" " regex_high" ", \-\-regioncount_high" " regex_high"
+.HP
+.BI "\-k" " regex_incr" ", \-\-regioncount_incr" " regex_incr"
+.IP
+Create \fIregex_low\fR regions for the first test,
+add \fIregex_incr\fR regions for each subsequent test, and
+create \fIregex_high\fR regions for the last test.
+.IP
+These three options must be specified together and are mutually
+exclusive with the \fBregioncount\fR option.
+.HP
+.BI "\-o" " size" ", \-\-offset" " size"
+.IP
+Create regions at \fIsize\fR offset for each test series, specified as
+a comma delimited regular expression with an optional unit suffix.
+(eg: "-o 4M" means four megabytes.)
+.IP
+This option is mutually exclusive with the \fBoffset_*\fR options.
+.HP
+.BI "\-m" " size_low" ", \-\-offset_low" " size_low"
+.HP
+.BI "\-q" " size_high" ", \-\-offset_high" " size_high"
+.HP
+.BI "\-r" " size_incr" ", \-\-offset_incr" " size_incr"
+.IP
+Create a region at \fIsize_low\fR offset for the first test, add
+\fIsize_incr\fR to the offset for each subsequent test, and create
+a region at \fIsize_high\fR offset for the last test.
+.IP
+These three options must be specified together and are mutually
+exclusive with the \fBoffset\fR option.
+.HP
+.BI "\-c" " size" ", \-\-chunksize" " size"
+.IP
+Use \fIsize\fR chunks for each test, specified as a comma delimited
+regular expression with an optional unit suffix. (eg: "-c 1M" means
+one megabyte.) The chunk size must be at least the region size.
+.IP
+This option is mutually exclusive with the \fBchunksize_*\fB options.
+.HP
+.BI "\-a" " size_low" ", \-\-chunksize_low" " size_low"
+.HP
+.BI "\-b" " size_high" ", \-\-chunksize_high" " size_high"
+.HP
+.BI "\-g" " size_incr" ", \-\-chunksize_incr" " size_incr"
+.IP
+Use a \fIsize_low\fR chunk size for the first test, add \fIsize_incr\fR
+to the chunk size for each subsequent test, and use a \fIsize_high\fR
+chunk size for the last test.
+.IP
+These three options must be specified together and are mutually
+exclusive with the \fBchunksize\fR option.
+.HP
+.BI "\-L" " dmu_flags" ", \-\-load" " dmu_flags"
+.IP
+Specify \fIdmuio\fR for regular DMU_IO, \fIssf\fR for single shared
+file access, or \fIfpp\fR for per thread access. Use commas to delimit
+multiple flags. (eg: "-L dmuio,ssf")
+.HP
+.BI "\-p" " name" ", \-\-pool" " name"
+.IP
+The pool name, which is mandatory.
+.HP
+.BI "\-M" " test" ", \-\-name" " test"
+.IP
+An arbitrary string that appears in the program output.
+.HP
+.BI "-x, \-\-cleanup"
+.IP
+Enable the DMU_REMOVE flag.
+.HP
+.BI "\-P" " command" ", \-\-prerun" " command"
+.IP
+Invoke \fIcommand\fR from the kernel before running the test. Shell
+expansion is not performed and the environment is set to
+HOME=/; TERM=linux; PATH=/sbin:/usr/sbin:/bin:/usr/bin.
+.HP
+.BI "\-R" " command" ", \-\-postrun" " command"
+.IP
+Invoke \fIcommand\fR from the kernel after running the test. Shell
+expansion is not performed and the environment is set to
+HOME=/; TERM=linux; PATH=/sbin:/usr/sbin:/bin:/usr/bin.
+.HP
+.BI "\-G" " directory" ", \-\-log" " directory"
+.IP
+Put logging output in this directory.
+.HP
+.BI "\-I" " size" ", \-\-regionnoise" " size"
+.IP
+Randomly vary the \fBregionsize\fR parameter for each test
+modulo \fIsize\fR bytes.
+.HP
+.BI "\-N" " size" ", \-\-chunknoise" " size"
+.IP
+Randomly vary the \fBchunksize\fR parameter for each test
+modulo \fIsize\fR bytes.
+.HP
+.BI "\-T" " time" ", \-\-threaddelay" " time"
+.IP
+Randomly vary the execution time for each test
+modulo \fItime\fR kernel jiffies.
+.HP
+.BI "\-V" "" ", \-\-verify" ""
+.IP
+Enable the DMU_VERIFY flag for trivial data verification.
+.HP
+.BI "\-z" "" ", \-\-zerocopy" ""
+.IP
+Enable the DMU_READ_ZC and DMU_WRITE_ZC flags, which are
+currently unimplemented for Linux.
+.IP
+.HP
+.BI "\-O" "" ", \-\-nowait" ""
+.IP
+Enable the DMU_WRITE_NOWAIT flag.
+.HP
+.BI "\-f" "" ", \-\-noprefetch" ""
+.IP
+Enable the DMU_READ_NOPF flag.
+.HP
+.BI "\-H" "" ", \-\-human\-readable" ""
+.IP
+Print PASS and FAIL results explicitly and put unit suffixes on large
+numbers.
+.HP
+.BI "\-v" "" ", \-\-verbose" ""
+.IP
+Increase output verbosity.
+.HP
+.BI "\-?" " " ", \-\-help" " "
+.IP
+Print the usage message.
+.SH "AUTHORS"
+The original zpios implementation was created by Cluster File Systems
+Inc and adapted to ZFS on Linux by Brian Behlendorf
+<behlendorf1@llnl.gov>.
+
+This man page was written by Darik Horn <dajhorn@vanadac.com>.
+.SH "SEE ALSO"
+.BR zpool (8),
+.BR zfs (8)
git://git.camperquake.de / zfs.git / blobdiff