diff options
| -rw-r--r-- | share/man/man4/Makefile | 4 | ||||
| -rw-r--r-- | share/man/man4/ffs_softupdates.4 | 156 |
2 files changed, 2 insertions, 158 deletions
diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile index 7249708ea6a..281c6c46936 100644 --- a/share/man/man4/Makefile +++ b/share/man/man4/Makefile @@ -1,10 +1,10 @@ -# $OpenBSD: Makefile,v 1.121 2000/07/01 15:00:20 aaron Exp $ +# $OpenBSD: Makefile,v 1.122 2000/07/06 23:59:21 aaron Exp $ MAN= ac97.4 adv.4 aha.4 ahb.4 ahc.4 aic.4 an.4 aria.4 ast.4 atalk.4 \ atapiscsi.4 audio.4 aue.4 awi.4 bpf.4 bridge.4 cardbus.4 ccd.4 \ cd.4 ch.4 clnp.4 clcs.4 cltp.4 cmpci.4 cnw.4 com.4 cue.4 cy.4 dc.4 \ ddb.4 de.4 dpt.4 drum.4 eap.4 ec.4 ef.4 eg.4 el.4 enc.4 ep.4 esis.4 \ - eso.4 ess.4 exphy.4 fd.4 fdc.4 ffs_softupdates.4 fpa.4 fxp.4 \ + eso.4 ess.4 exphy.4 fd.4 fdc.4 fpa.4 fxp.4 \ gdt.4 gre.4 hifn.4 ich.4 icmp.4 icsphy.4 idp.4 ifmedia.4 inet.4 \ inphy.4 iophy.4 ip.4 ipl.4 ipsec.4 isa.4 isapnp.4 iso.4 isp.4 \ ksyms.4 kue.4 lkm.4 lmc.4 lo.4 lxtphy.4 midi.4 mii.4 mtdphy.4 \ diff --git a/share/man/man4/ffs_softupdates.4 b/share/man/man4/ffs_softupdates.4 deleted file mode 100644 index 4b7b6da0e00..00000000000 --- a/share/man/man4/ffs_softupdates.4 +++ /dev/null @@ -1,156 +0,0 @@ -.\" $OpenBSD: ffs_softupdates.4,v 1.4 2000/04/30 18:41:30 millert Exp $ -.\" -.\" Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com> -.\" All rights reserved. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice, this list of conditions and the following disclaimer. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice, this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" 3. The name of the author may not be used to endorse or promote products -.\" derived from this software without specific prior written permission. -.\" -.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, -.\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY -.\" AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL -.\" THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -.\" EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, -.\" PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; -.\" OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, -.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR -.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF -.\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -.\" -.Dd March 15, 1998 -.Dt FFS_SOFTUPDATES 4 -.Os -.Sh NAME -.Nm ffs_softupdates -.Nd asynchronous file system writes -.Sh DESCRIPTION -The -.Nm FFS_SOFTUPDATES -kernel config option enables a scheme that uses partial ordering of -buffer cache operations to allow metadata updates in the fast filesystem -to happen asynchronously, increasing write performance significantly. -Normally, the -.Em ffs -filesystem writes metadata updates synchronously which exacts -a performance penalty in favor of filesystem integrity. -With -.Em soft updates , -you gain the performance of asynchronous writes while retaining the safety -of synchronous metadata updates. -.Pp -.Em Soft Updates -must be enabled on a per-filesystem basis. To do this, boot into -single user mode and run -.Dq tunefs -s enable special -on each character special disk device you want to enable -.Em soft updates -on, then run -.Dq reboot -n . -.Sh CAVEATS -Soft updates should be considered experimental at this time. -.Pp -CPUs with a small kernel address space, such as the sun4 and -sun4c, do not have enough kernel memory to support -.Em Soft Updates . -Attempts to use -.Em Soft Updates -on these CPUs will cause a kernel hang or panic after a short period of -use as the kernel will quickly run out of memory. This is not related -to the amount of physical memory present in the machine--it is a limitation -of the CPU architecture. -.Pp -There should be a -.Xr mount 2 -option to enable -.Em soft updates . -.br -The current license for -.Nm -is more restrictive than the rest of the -.Ox -kernel; this will be changed at a future date. -.Sh AUTHOR -Marshall Kirk McKusick -.Sh LICENSE -The following are the copyrights and redistribution conditions that -apply to this copy of the soft update software. For a license -to use, redistribute or sell the soft update software under -conditions other than those described here, please contact the -author at one of the following addresses: -.Bd -literal -offset indent -Marshall Kirk McKusick mckusick@mckusick.com -1614 Oxford Street +1-510-843-9542 -Berkeley, CA 94709-1608 -USA -.Ed -.Pp -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions -are met: -.Bl -tag -width XXX -.It 1. -Redistributions of source code must retain the above copyright -notice, this list of conditions and the following disclaimer. -.It 2. -Redistributions in binary form must reproduce the above copyright -notice, this list of conditions and the following disclaimer in the -documentation and/or other materials provided with the distribution. -.It 3. -None of the names of McKusick, Ganger, Patt, or the University of -Michigan may be used to endorse or promote products derived from -this software without specific prior written permission. -.It 4. -Redistributions in any form must be accompanied by information on -how to obtain complete source code for any accompanying software -that uses this software. This source code must either be included -in the distribution or be available for no more than the cost of -distribution plus a nominal fee, and must be freely redistributable -under reasonable conditions. For an executable file, complete -source code means the source code for all modules it contains. -It does not mean source code for modules or files that typically -accompany the operating system on which the executable file runs, -e.g., standard library modules or system header files. -.El -.Pp -THIS SOFTWARE IS PROVIDED BY MARSHALL KIRK MCKUSICK ``AS IS'' AND ANY -EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED -WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -DISCLAIMED. IN NO EVENT SHALL MARSHALL KIRK MCKUSICK BE LIABLE FOR -ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL -DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS -OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) -HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY -OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF -SUCH DAMAGE. -.Sh SEE ALSO -.Xr fs 5 , -.Xr config 8 , -.Xr sysctl 8 , -.Xr tunefs 8 . -.Rs -.%T "A Fast Filesystem for UNIX" -.%A Marshall Kirk McKusick -.%A William N. Joy -.%A Samuel J. Leffler -.%A Robert S. Fabry -.%C Computer Science Research Group -.Re -.Pp -.Rs -.%T "Soft Updates: A Solution to the Metadata Update Problem in File Systems" -.%A Gregory R. Ganger -.%A Yale N. Patt -.%R CSE-TR-254-95 -.%C "University of Michigan, Ann Arbor" -.Re -.br -.Li http://www.ece.cmu.edu/~ganger/papers/CSE-TR-254-95/ |