The file system snapshot pseudo driver.
Uses a hook in spec_strategy() to save data written from a mounted file system to its block device and a hook in dounmount(). Not enabled by default in any kernel config. Approved by: Frank van der Linden <fvdl@netbsd.org>
This commit is contained in:
hannken
parent
4949a9ae53
commit
fbae381aaa
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@ -1,4 +1,4 @@
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# $NetBSD: mi,v 1.441 2003/12/05 06:30:18 simonb Exp $
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# $NetBSD: mi,v 1.442 2003/12/10 11:40:11 hannken Exp $
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. base-sys-root
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./altroot base-sys-root
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./bin base-sys-root
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@ -774,6 +774,7 @@
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./usr/sbin/faithd base-router-bin
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./usr/sbin/fixmount base-nfsclient-bin
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./usr/sbin/fsinfo base-sysutil-bin
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./usr/sbin/fssconfig base-sysutil-bin
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./usr/sbin/getencstat base-sysutil-bin
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./usr/sbin/group base-sysutil-bin
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./usr/sbin/groupadd base-sysutil-bin
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@ -1,4 +1,4 @@
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# $NetBSD: mi,v 1.644 2003/12/05 13:49:16 lukem Exp $
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# $NetBSD: mi,v 1.645 2003/12/10 11:40:11 hannken Exp $
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./usr/bin/addr2line comp-debug-bin
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./usr/bin/ar comp-util-bin
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./usr/bin/as comp-util-bin
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@ -135,6 +135,7 @@
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./usr/include/dev/dec/lk201.h comp-c-include
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./usr/include/dev/dmover comp-c-include
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./usr/include/dev/dmover/dmover_io.h comp-c-include
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./usr/include/dev/fssvar.h comp-c-include
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./usr/include/dev/hpc comp-c-include
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./usr/include/dev/hpc/hpcfbio.h comp-c-include
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./usr/include/dev/i2o comp-c-include
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@ -1,4 +1,4 @@
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# $NetBSD: mi,v 1.631 2003/12/05 06:30:18 simonb Exp $
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# $NetBSD: mi,v 1.632 2003/12/10 11:40:11 hannken Exp $
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./usr/share/info/am-utils.info man-amd-info
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./usr/share/info/as.info man-computil-info
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./usr/share/info/awk.info man-util-info
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@ -676,6 +676,7 @@
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./usr/share/man/cat4/fms.0 man-sys-catman
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./usr/share/man/cat4/fmv.0 man-sys-catman
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./usr/share/man/cat4/fpa.0 man-sys-catman
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./usr/share/man/cat4/fss.0 man-sys-catman
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./usr/share/man/cat4/fta.0 man-sys-catman
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./usr/share/man/cat4/fwiso.0 man-sys-catman
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./usr/share/man/cat4/fxp.0 man-sys-catman
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@ -1430,6 +1431,7 @@
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./usr/share/man/cat8/fsdb.0 man-sysutil-catman
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./usr/share/man/cat8/fsinfo.0 man-sysutil-catman
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./usr/share/man/cat8/fsirand.0 man-sysutil-catman
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./usr/share/man/cat8/fssconfig.0 man-sysutil-catman
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./usr/share/man/cat8/ftpd.0 man-netutil-catman
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./usr/share/man/cat8/genassym.sh.0 man-sys-catman
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./usr/share/man/cat8/getNAME.0 man-man-catman
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@ -2429,6 +2431,7 @@
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./usr/share/man/man4/fms.4 man-sys-man
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./usr/share/man/man4/fmv.4 man-sys-man
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./usr/share/man/man4/fpa.4 man-sys-man
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./usr/share/man/man4/fss.4 man-sys-man
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./usr/share/man/man4/fta.4 man-sys-man
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./usr/share/man/man4/fwiso.4 man-sys-man
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./usr/share/man/man4/fxp.4 man-sys-man
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@ -3184,6 +3187,7 @@
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./usr/share/man/man8/fsdb.8 man-sysutil-man
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./usr/share/man/man8/fsinfo.8 man-sysutil-man
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./usr/share/man/man8/fsirand.8 man-sysutil-man
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./usr/share/man/man8/fssconfig.8 man-sysutil-man
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./usr/share/man/man8/ftpd.8 man-netutil-man
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./usr/share/man/man8/genassym.sh.8 man-sys-man
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./usr/share/man/man8/getNAME.8 man-man-man
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@ -1,5 +1,5 @@
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#!/bin/sh -
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# $NetBSD: MAKEDEV.tmpl,v 1.10 2003/11/24 06:31:44 isaki Exp $
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# $NetBSD: MAKEDEV.tmpl,v 1.11 2003/12/10 11:40:11 hannken Exp $
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#
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# Copyright (c) 2003 The NetBSD Foundation, Inc.
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# All rights reserved.
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@ -72,6 +72,7 @@
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# bmd* Nereid bank memory disks
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# ed* IBM PS/2 ESDI disk devices
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# fd* "floppy" disk drives (3 1/2", 5 1/4")
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# fss* Files system snapshot devices
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# gdrom* Dreamcast "gigadisc" CD-ROM drive
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# hk* UNIBUS RK06 and RK07
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# hp* MASSBUS RM??
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@ -316,6 +317,7 @@ all)
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makedev std fd pty0
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makedev ccd0 ccd1 ccd2 ccd3
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makedev cgd0 cgd1 cgd2 cgd3
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makedev fss0 fss1 fss2 fss3
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makedev md0 md1
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makedev raid0 raid1 raid2 raid3 raid4 raid5 raid6 raid7
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makedev vnd0 vnd1 vnd2 vnd3
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@ -569,6 +571,14 @@ md*)
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makedisk_minimal md ${i#md} %md_blk% %md_chr%
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;;
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fss*)
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name=fss; unit=${i#fss}; blk=%fss_blk%; chr=%fss_chr%
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mknod $name$unit b $blk $unit
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mknod r$name$unit c $chr $unit
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chgrp operator $name$unit r$name$unit
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chmod 660 $name$unit r$name$unit
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;;
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ss*)
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case $i in
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ss*) name=ss; unit=${i#ss}; chr=%ss_chr%;;
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@ -1,4 +1,4 @@
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# $NetBSD: Makefile,v 1.303 2003/11/05 02:59:09 uwe Exp $
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# $NetBSD: Makefile,v 1.304 2003/12/10 11:40:11 hannken Exp $
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# @(#)Makefile 8.1 (Berkeley) 6/18/93
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MAN= aac.4 acardide.4 aceride.4 acphy.4 adc.4 adv.4 adw.4 agp.4 \
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@ -12,7 +12,7 @@ MAN= aac.4 acardide.4 aceride.4 acphy.4 adc.4 adv.4 adw.4 agp.4 \
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ddb.4 de.4 dmoverio.4 dmphy.4 dpt.4 dpti.4 \
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drum.4 eap.4 ebus.4 edc.4 elmc.4 emuxki.4 en.4 envsys.4 ep.4 esh.4 \
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esis.4 esa.4 esiop.4 esl.4 esm.4 eso.4 exphy.4 \
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fd.4 fpa.4 fms.4 fwiso.4 fxp.4 \
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fd.4 fpa.4 fms.4 fss.4 fwiso.4 fxp.4 \
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gem.4 gentbi.4 glxtphy.4 gpib.4 gre.4 gphyter.4 gsip.4 hme.4 hptide.4 \
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icmp.4 icp.4 icsphy.4 idp.4 ifmedia.4 igsfb.4 iha.4 inet.4 \
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inphy.4 intersil7170.4 ioasic.4 ioat.4 \
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@ -0,0 +1,138 @@
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.\" $NetBSD: fss.4,v 1.1 2003/12/10 11:40:11 hannken Exp $ */
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.\"
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.\"
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.\" Copyright (c) 2003 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Juergen Hannken-Illjes.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
|
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.\" are met:
|
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.\" 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
|
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
|
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``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 FOUNDATION OR CONTRIBUTORS
|
||||
.\" 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
|
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.\" 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
|
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd December 10, 2003
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.Dt FSS 4
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.Os
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.Sh NAME
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.Nm fss
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.Nd file system snapshot device
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.Sh SYNOPSIS
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.Cd "pseudo-device fss 4"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides a read-only interface to the snapshot of a currently
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mounted file system.
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Reading from a
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.Nm
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device gives the view of the file system when the snapshot was taken.
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It can be configured via
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.Xr ioctl 2 .
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.Sh IOCTLS
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The
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.Xr ioctl 2
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command codes below are defined in
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.Aq Pa sys/dev/fssvar.h .
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.Pp
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The (third) argument to the
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.Xr ioctl 2
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should be a pointer to the type indicated.
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.Bl -tag -width indent -offset indent
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.It Dv FSSIOCSET (struct fss_set)
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Configures a
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.Nm
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device.
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.Bd -literal -offset indent
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struct fss_set {
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char *fss_mount;
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char *fss_bstore;
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blksize_t fss_csize;
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};
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.Ed
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The struct element
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.Va fss_mount
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is the mount point of the file system.
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The struct element
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.Va fss_bstore
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is either a regular file or a raw disk device where data overwritten on
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the file system will be saved.
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The struct element
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.Va fss_csize
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is the preferred size of this data.
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.It Dv FSSIOCGET (struct fss_get)
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Gets the status of a
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.Nm
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device.
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.Bd -literal -offset indent
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struct fss_get {
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char fsg_mount[MNAMELEN];
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struct timeval fsg_time;
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blksize_t fsg_csize;
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blkcnt_t fsg_mount_size;
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blkcnt_t fsg_bs_size;
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};
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.Ed
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The struct element
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.Va fsg_mount
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is the mount point of the file system.
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The struct element
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.Va fsg_time
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is the time this snapshot was taken.
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The struct element
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.Va fsg_csize
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is the current size of data clusters.
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The struct element
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.Va fsg_mount_size
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is the number of clusters of the file system.
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The struct element
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.Va fsg_bs_size
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is the number of clusters written to the backing store.
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.It Dv FSSIOCCLR
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Unconfigures a
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.Nm
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device.
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.El
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.Sh FILES
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.Bl -tag -width /dev/rfss? -compact
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.It Pa /dev/rfss?
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.It Pa /dev/fss?
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.El
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.Sh SEE ALSO
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.Xr fsscontrol 8 ,
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.Xr mount 8 ,
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.Xr umount 8
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Nx 2.0 .
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.Sh BUGS
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This driver is
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.Em experimental .
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Be sure you have a backup before you use it.
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@ -6,7 +6,7 @@
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.\" *** DO NOT EDIT - any changes will be lost!!!
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.\" *** ------------------------------------------------------------------
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.\"
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.\" $NetBSD: MAKEDEV.8,v 1.6 2003/11/24 06:33:17 isaki Exp $
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.\" $NetBSD: MAKEDEV.8,v 1.7 2003/12/10 11:40:11 hannken Exp $
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.\"
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.\" Copyright (c) 2001, 2003 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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|
|
@ -42,7 +42,7 @@
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd November 23, 2003
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.Dd December 10, 2003
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.Dt MAKEDEV 8
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.Os
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.Sh NAME
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|
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@ -164,6 +164,9 @@ IBM PS/2 ESDI disk devices, see
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``floppy'' disk drives (3 1/2", 5 1/4"), see
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.Xr \&amiga/fdc 4 ,
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.Xr \&i386/fdc 4
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. It Ar fss#
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Files system snapshot devices, see
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.Xr \&fss 4
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. It Ar gdrom#
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Dreamcast ``gigadisc'' CD-ROM drive, see
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.Xr \&dreamcast/gdrom 4
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|
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@ -1,4 +1,4 @@
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# $NetBSD: files,v 1.646 2003/12/07 05:30:22 dyoung Exp $
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# $NetBSD: files,v 1.647 2003/12/10 11:40:11 hannken Exp $
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# @(#)files.newconf 7.5 (Berkeley) 5/10/93
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@ -985,6 +985,7 @@ defpseudo vnd: disk
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defpseudo ccd: disk
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defpseudo cgd: disk, des, blowfish, cast128, rijndael
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defpseudo md: disk
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defpseudo fss: disk
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defpseudo pty: tty
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defpseudo tb: tty
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@ -1086,6 +1087,7 @@ file dev/cgd_crypto.c cgd
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file dev/clock_subr.c
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file dev/clockctl.c clockctl needs-flag
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file dev/dksubr.c cgd
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file dev/fss.c fss needs-count
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file dev/md.c md needs-count
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file dev/midi.c midi | midibus needs-flag
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file dev/midisyn.c midisyn
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|
|
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@ -1,4 +1,4 @@
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# $NetBSD: majors,v 1.4 2003/10/10 22:46:07 jdolecek Exp $
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# $NetBSD: majors,v 1.5 2003/12/10 11:40:11 hannken Exp $
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||||
#
|
||||
# Device majors for Machine-Independent drivers.
|
||||
#
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||||
|
|
@ -12,3 +12,4 @@
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|||
device-major crypto char 160 opencrypto
|
||||
device-major pf char 161 pf
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device-major vinum char 162 block 162 vinum
|
||||
device-major fss char 163 block 163 fss
|
||||
|
|
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|||
|
|
@ -1,4 +1,4 @@
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|||
# $NetBSD: Makefile,v 1.17 2003/10/10 06:14:02 grog Exp $
|
||||
# $NetBSD: Makefile,v 1.18 2003/12/10 11:40:11 hannken Exp $
|
||||
|
||||
SUBDIR= apm ata dec dmover hpc i2o ic ieee1394 ir isa ofw \
|
||||
pci pckbc pcmcia raidframe sbus scsipi sun tc usb vme wscons vinum
|
||||
|
|
@ -6,6 +6,6 @@ SUBDIR= apm ata dec dmover hpc i2o ic ieee1394 ir isa ofw \
|
|||
INCSDIR= /usr/include/dev
|
||||
|
||||
# Only install includes which are used by userland
|
||||
INCS= ccdvar.h cgdvar.h kttcpio.h md.h vndvar.h
|
||||
INCS= ccdvar.h cgdvar.h fssvar.h kttcpio.h md.h vndvar.h
|
||||
|
||||
.include <bsd.kinc.mk>
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,163 @@
|
|||
/* $NetBSD: fssvar.h,v 1.1 2003/12/10 11:40:11 hannken Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2003 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Juergen Hannken-Illjes.
|
||||
*
|
||||
* 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the NetBSD
|
||||
* Foundation, Inc. and its contributors.
|
||||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef _SYS_DEV_FSSVAR_H
|
||||
#define _SYS_DEV_FSSVAR_H
|
||||
|
||||
struct fss_set {
|
||||
char *fss_mount; /* Mount point of file system */
|
||||
char *fss_bstore; /* Path of backing store */
|
||||
blksize_t fss_csize; /* Preferred cluster size */
|
||||
};
|
||||
|
||||
struct fss_get {
|
||||
char fsg_mount[MNAMELEN]; /* Mount point of file system */
|
||||
struct timeval fsg_time; /* Time this snapshot was taken */
|
||||
blksize_t fsg_csize; /* Current cluster size */
|
||||
blkcnt_t fsg_mount_size; /* # clusters on file system */
|
||||
blkcnt_t fsg_bs_size; /* # clusters on backing store */
|
||||
};
|
||||
|
||||
#define FSSIOCSET _IOW('F', 0, struct fss_set) /* Configure */
|
||||
#define FSSIOCGET _IOR('F', 1, struct fss_get) /* Status */
|
||||
#define FSSIOCCLR _IO('F', 2) /* Unconfigure */
|
||||
|
||||
#ifdef _KERNEL
|
||||
|
||||
#define FSS_CLUSTER_MAX (1<<24) /* Upper bound of clusters. The
|
||||
sc_copied map uses
|
||||
FSS_CLUSTER_MAX/NBBY bytes */
|
||||
typedef enum {
|
||||
FSS_CACHE_FREE = 0, /* Cache entry is free */
|
||||
FSS_CACHE_BUSY = 1, /* Cache entry is read from device */
|
||||
FSS_CACHE_VALID = 2 /* Cache entry contains valid data */
|
||||
} fss_cache_type;
|
||||
|
||||
struct fss_cache {
|
||||
fss_cache_type fc_type; /* Current state */
|
||||
struct fss_softc *fc_softc; /* Backlink to our softc */
|
||||
volatile int fc_xfercount; /* Number of outstanding transfers */
|
||||
u_int32_t fc_cluster; /* Cluster number of this entry */
|
||||
caddr_t fc_data; /* Data */
|
||||
};
|
||||
|
||||
struct fss_softc {
|
||||
int sc_unit; /* Logical unit number */
|
||||
struct lock sc_lock; /* Get exclusive access to device */
|
||||
volatile int sc_flags; /* Flags */
|
||||
#define FSS_ACTIVE 0x01 /* Snapshot is active */
|
||||
#define FSS_ERROR 0x02 /* I/o error occured */
|
||||
#define FSS_BS_THREAD 0x04 /* Kernel thread is running */
|
||||
struct mount *sc_mount; /* Mount point */
|
||||
char sc_mntname[MNAMELEN]; /* Mount point */
|
||||
struct timeval sc_time; /* Time this snapshot was taken */
|
||||
dev_t sc_bdev; /* Underlying block device */
|
||||
void (*sc_strategy)(struct buf *); /* And its strategy */
|
||||
struct vnode *sc_bs_vp; /* Our backing store */
|
||||
int sc_bs_bsize; /* Its bsize */
|
||||
struct proc *sc_bs_proc; /* Our kernel thread */
|
||||
u_int32_t sc_clsize; /* Size of cluster */
|
||||
u_int32_t sc_clcount; /* # clusters in file system */
|
||||
u_int8_t *sc_copied; /* Map of clusters already copied */
|
||||
long sc_cllast; /* Bytes in last cluster */
|
||||
int sc_cowcount; /* Number of cow in progress */
|
||||
int sc_cache_size; /* Number of entries in sc_cache */
|
||||
struct fss_cache *sc_cache; /* Cluster cache */
|
||||
struct bufq_state sc_bufq; /* Transfer queue */
|
||||
u_int32_t sc_clnext; /* Next free cluster on backing store */
|
||||
int sc_indir_size; /* # clusters for indirect mapping */
|
||||
u_int8_t *sc_indir_valid; /* Map of valid indirect clusters */
|
||||
u_int32_t sc_indir_cur; /* Current indir cluster number */
|
||||
int sc_indir_dirty; /* Current indir cluster modified */
|
||||
u_int32_t *sc_indir_data; /* Current indir cluster data */
|
||||
};
|
||||
|
||||
struct fss_softc fss_softc[NFSS];
|
||||
|
||||
void fss_copy_on_write(struct fss_softc *, struct buf *);
|
||||
int fss_umount_hook(struct mount *, int);
|
||||
|
||||
/*
|
||||
* Get this dev's softc if it is a valid device.
|
||||
* Return a pointer to its softc.
|
||||
*/
|
||||
static inline int
|
||||
fss_dev_to_softc(dev_t dev, struct fss_softc **scp)
|
||||
{
|
||||
int unit;
|
||||
struct fss_softc *sc;
|
||||
|
||||
unit = minor(dev);
|
||||
if (unit < 0 || unit >= NFSS)
|
||||
return ENODEV;
|
||||
sc = &fss_softc[unit];
|
||||
*scp = sc;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Check if this buf needs to be copied on write.
|
||||
* Unroll the loop for small NFSS.
|
||||
*/
|
||||
static inline void
|
||||
fss_cow_hook(struct buf *bp)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (bp->b_flags & B_READ)
|
||||
return;
|
||||
|
||||
if (NFSS <= 4) {
|
||||
if (__predict_false(fss_softc[0].sc_bdev == bp->b_dev ||
|
||||
(NFSS > 1 && fss_softc[1].sc_bdev == bp->b_dev) ||
|
||||
(NFSS > 2 && fss_softc[2].sc_bdev == bp->b_dev) ||
|
||||
(NFSS > 3 && fss_softc[3].sc_bdev == bp->b_dev)))
|
||||
for (i = 0; i < NFSS; i++)
|
||||
if (fss_softc[i].sc_bdev == bp->b_dev)
|
||||
fss_copy_on_write(&fss_softc[i], bp);
|
||||
} else {
|
||||
for (i = 0; i < NFSS; i++)
|
||||
if (__predict_false(fss_softc[i].sc_bdev == bp->b_dev))
|
||||
fss_copy_on_write(&fss_softc[i], bp);
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* _KERNEL */
|
||||
|
||||
#endif /* !_SYS_DEV_FSSVAR_H */
|
||||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: vfs_syscalls.c,v 1.201 2003/11/15 01:19:38 thorpej Exp $ */
|
||||
/* $NetBSD: vfs_syscalls.c,v 1.202 2003/12/10 11:40:12 hannken Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1989, 1993
|
||||
|
|
@ -37,11 +37,12 @@
|
|||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.201 2003/11/15 01:19:38 thorpej Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.202 2003/12/10 11:40:12 hannken Exp $");
|
||||
|
||||
#include "opt_compat_netbsd.h"
|
||||
#include "opt_compat_43.h"
|
||||
#include "opt_ktrace.h"
|
||||
#include "fss.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
|
|
@ -66,6 +67,10 @@ __KERNEL_RCSID(0, "$NetBSD: vfs_syscalls.c,v 1.201 2003/11/15 01:19:38 thorpej E
|
|||
#include <miscfs/genfs/genfs.h>
|
||||
#include <miscfs/syncfs/syncfs.h>
|
||||
|
||||
#if NFSS > 0
|
||||
#include <dev/fssvar.h>
|
||||
#endif
|
||||
|
||||
MALLOC_DEFINE(M_MOUNT, "mount", "vfs mount struct");
|
||||
|
||||
static int change_dir __P((struct nameidata *, struct proc *));
|
||||
|
|
@ -535,6 +540,9 @@ dounmount(mp, flags, p)
|
|||
if (mp->mnt_syncer != NULL)
|
||||
vfs_deallocate_syncvnode(mp);
|
||||
if (((mp->mnt_flag & MNT_RDONLY) ||
|
||||
#if NFSS > 0
|
||||
(error = fss_umount_hook(mp, (flags & MNT_FORCE))) == 0 ||
|
||||
#endif
|
||||
(error = VFS_SYNC(mp, MNT_WAIT, p->p_ucred, p)) == 0) ||
|
||||
(flags & MNT_FORCE))
|
||||
error = VFS_UNMOUNT(mp, flags, p);
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
/* $NetBSD: spec_vnops.c,v 1.74 2003/11/26 11:33:50 pk Exp $ */
|
||||
/* $NetBSD: spec_vnops.c,v 1.75 2003/12/10 11:40:12 hannken Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1989, 1993
|
||||
|
|
@ -32,7 +32,9 @@
|
|||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: spec_vnops.c,v 1.74 2003/11/26 11:33:50 pk Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: spec_vnops.c,v 1.75 2003/12/10 11:40:12 hannken Exp $");
|
||||
|
||||
#include "fss.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/proc.h>
|
||||
|
|
@ -54,6 +56,10 @@ __KERNEL_RCSID(0, "$NetBSD: spec_vnops.c,v 1.74 2003/11/26 11:33:50 pk Exp $");
|
|||
#include <miscfs/genfs/genfs.h>
|
||||
#include <miscfs/specfs/specdev.h>
|
||||
|
||||
#if NFSS > 0
|
||||
#include <dev/fssvar.h>
|
||||
#endif
|
||||
|
||||
/* symbolic sleep message strings for devices */
|
||||
const char devopn[] = "devopn";
|
||||
const char devio[] = "devio";
|
||||
|
|
@ -587,8 +593,12 @@ spec_strategy(v)
|
|||
(LIST_FIRST(&bp->b_dep)) != NULL && bioops.io_start)
|
||||
(*bioops.io_start)(bp);
|
||||
bdev = bdevsw_lookup(bp->b_dev);
|
||||
if (bdev != NULL)
|
||||
if (bdev != NULL) {
|
||||
#if NFSS > 0
|
||||
fss_cow_hook(bp);
|
||||
#endif
|
||||
(*bdev->d_strategy)(bp);
|
||||
}
|
||||
return (0);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,4 +1,4 @@
|
|||
# $NetBSD: Makefile,v 1.187 2003/12/07 21:57:22 matt Exp $
|
||||
# $NetBSD: Makefile,v 1.188 2003/12/10 11:40:12 hannken Exp $
|
||||
# from: @(#)Makefile 5.20 (Berkeley) 6/12/93
|
||||
|
||||
.include <bsd.own.mk>
|
||||
|
|
@ -6,7 +6,7 @@
|
|||
SUBDIR= ac accton altq amd apm apmd arp bad144 bind bootp catman \
|
||||
chown chroot chrtbl cnwctl config cron dev_mkdb \
|
||||
dhcp diskpart dumpfs dumplfs edquota eeprom \
|
||||
envstat eshconfig etcupdate grfconfig \
|
||||
envstat eshconfig etcupdate fssconfig grfconfig \
|
||||
grfinfo gspa hilinfo ifwatchd inetd installboot \
|
||||
iopctl iostat ipf irdaattach isdn iteconfig \
|
||||
kgmon lastlogin link lpr mailwrapper makefs \
|
||||
|
|
|
|||
|
|
@ -0,0 +1,8 @@
|
|||
# $NetBSD: Makefile,v 1.1 2003/12/10 11:40:12 hannken Exp $
|
||||
|
||||
PROG= fssconfig
|
||||
MAN= fssconfig.8
|
||||
DPADD+= ${LIBUTIL}
|
||||
LDADD+= -lutil
|
||||
|
||||
.include <bsd.prog.mk>
|
||||
|
|
@ -0,0 +1,166 @@
|
|||
.\" $NetBSD: fssconfig.8,v 1.1 2003/12/10 11:40:12 hannken Exp $ */
|
||||
.\"
|
||||
.\"
|
||||
.\" Copyright (c) 2003 The NetBSD Foundation, Inc.
|
||||
.\" All rights reserved.
|
||||
.\"
|
||||
.\" This code is derived from software contributed to The NetBSD Foundation
|
||||
.\" by Juergen Hannken-Illjes.
|
||||
.\"
|
||||
.\" 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. All advertising materials mentioning features or use of this software
|
||||
.\" must display the following acknowledgement:
|
||||
.\" This product includes software developed by the NetBSD
|
||||
.\" Foundation, Inc. and its contributors.
|
||||
.\" 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
.\" contributors may be used to endorse or promote products derived
|
||||
.\" from this software without specific prior written permission.
|
||||
.\"
|
||||
.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
.\" ``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 FOUNDATION OR CONTRIBUTORS
|
||||
.\" 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 December 10, 2003
|
||||
.Dt FSSCONFIG 8
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm fssconfig
|
||||
.Nd configure file system snapshot devices
|
||||
.Sh SYNOPSIS
|
||||
.Nm
|
||||
.Op Fl cx
|
||||
.Ar device
|
||||
.Ar path
|
||||
.Ar backup
|
||||
.Op Ar cluster Op Ar size
|
||||
.Nm
|
||||
.Fl u
|
||||
.Ar device
|
||||
.Nm
|
||||
.Fl l Op Fl v
|
||||
.Op Ar device
|
||||
.Sh DESCRIPTION
|
||||
The
|
||||
.Nm
|
||||
command configures file system snapshot pseudo disk devices.
|
||||
It will associate the file system snapshot disk
|
||||
.Ar device
|
||||
with a snapshot of
|
||||
.Ar path
|
||||
allowing the latter to be accessed as though it were a disk.
|
||||
Data written through the
|
||||
.Ar path
|
||||
will be saved in
|
||||
.Ar backup
|
||||
which must not reside on the snapshotted file system.
|
||||
If
|
||||
.Ar backup
|
||||
is a regular file, it will be created with length
|
||||
.Ar size .
|
||||
Default size is 10% the size of
|
||||
.Ar path .
|
||||
Data is saved to
|
||||
.Ar backup
|
||||
in units of
|
||||
.Ar cluster
|
||||
bytes.
|
||||
.Pp
|
||||
Options indicate an action to be performed:
|
||||
.Bl -tag -width indent
|
||||
.It Fl c
|
||||
Configures the device.
|
||||
If successful, references to
|
||||
.Ar device
|
||||
will access the contents of
|
||||
.Ar path
|
||||
at the time the snapshot was taken.
|
||||
If
|
||||
.Ar backup
|
||||
is a directory a temporary file will be created in this directory.
|
||||
This file will be unlinked on exit.
|
||||
.It Fl l
|
||||
List the snapshot devices and indicate which ones are in use.
|
||||
If a specific
|
||||
.Ar device
|
||||
is given, then only that will be described.
|
||||
.It Fl u
|
||||
Unconfigures the
|
||||
.Ar device .
|
||||
.It Fl v
|
||||
Be more verbose listing the snapshot devices.
|
||||
.It Fl x
|
||||
Unlink
|
||||
.Ar backup
|
||||
after the
|
||||
.Ar device
|
||||
is configured.
|
||||
.El
|
||||
.Pp
|
||||
If no action option is given,
|
||||
.Fl c
|
||||
is assumed.
|
||||
.Sh FILES
|
||||
.Bl -tag -width /etc/disktab -compact
|
||||
.It Pa /dev/rfss?
|
||||
.It Pa /dev/fss?
|
||||
.El
|
||||
.Sh EXAMPLES
|
||||
.Dl fssconfig fss0 /usr /tmp/back
|
||||
.Pp
|
||||
Configures the snapshot device
|
||||
.Pa fss0
|
||||
for a snapshot of the
|
||||
.Pa /usr
|
||||
file system. Data written through
|
||||
.Pa /usr
|
||||
will be backed up in
|
||||
.Pa /tmp/back .
|
||||
.Pp
|
||||
.Dl fssconfig fss1 / /dev/rsd0e 8192
|
||||
.Pp
|
||||
Configures the snapshot device
|
||||
.Pa fss1
|
||||
for a snapshot of the
|
||||
.Pa /
|
||||
file system. Data written through
|
||||
.Pa /
|
||||
will be backed up in
|
||||
.Pa /dev/rsd0e .
|
||||
The backup will take place in units of 8192 bytes.
|
||||
.Pp
|
||||
.Dl fssconfig -u fss0
|
||||
.Pp
|
||||
Unconfigures the
|
||||
.Pa fss0
|
||||
device.
|
||||
.Sh SEE ALSO
|
||||
.Xr opendisk 3 ,
|
||||
.Xr fss 4 ,
|
||||
.Xr mount 8 ,
|
||||
.Xr umount 8
|
||||
.Sh HISTORY
|
||||
The
|
||||
.Nm
|
||||
command appeared in
|
||||
.Nx 2.0 .
|
||||
.Sh BUGS
|
||||
The
|
||||
.Xr fss 4
|
||||
driver is
|
||||
.Em experimental .
|
||||
Be sure you have a backup before you use it.
|
||||
|
|
@ -0,0 +1,265 @@
|
|||
/* $NetBSD: fssconfig.c,v 1.1 2003/12/10 11:40:12 hannken Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2003 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Juergen Hannken-Illjes.
|
||||
*
|
||||
* 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. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed by the NetBSD
|
||||
* Foundation, Inc. and its contributors.
|
||||
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
||||
* contributors may be used to endorse or promote products derived
|
||||
* from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``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 FOUNDATION OR CONTRIBUTORS
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/mount.h>
|
||||
#include <sys/stat.h>
|
||||
|
||||
#include <err.h>
|
||||
#include <errno.h>
|
||||
#include <fcntl.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
#include <unistd.h>
|
||||
#include <util.h>
|
||||
|
||||
#include <dev/fssvar.h>
|
||||
|
||||
int vflag = 0;
|
||||
int xflag = 0;
|
||||
|
||||
int mkfile(int, off_t);
|
||||
void config(int, char **);
|
||||
void unconfig(int, char **);
|
||||
void list(int, char **);
|
||||
void usage(void);
|
||||
|
||||
int
|
||||
main(int argc, char **argv)
|
||||
{
|
||||
int ch;
|
||||
void (*action)(int, char **);
|
||||
|
||||
action = config;
|
||||
|
||||
while ((ch = getopt(argc, argv, "cluvx")) != -1) {
|
||||
switch (ch) {
|
||||
case 'c':
|
||||
action = config;
|
||||
break;
|
||||
case 'l':
|
||||
action = list;
|
||||
break;
|
||||
case 'u':
|
||||
action = unconfig;
|
||||
break;
|
||||
case 'v':
|
||||
vflag++;
|
||||
break;
|
||||
case 'x':
|
||||
xflag++;
|
||||
break;
|
||||
default:
|
||||
case '?':
|
||||
usage();
|
||||
/* NOTREACHED */
|
||||
}
|
||||
}
|
||||
|
||||
argc -= optind;
|
||||
argv += optind;
|
||||
|
||||
(*action)(argc, argv);
|
||||
|
||||
exit(0);
|
||||
}
|
||||
|
||||
int
|
||||
mkfile(int fd, off_t size)
|
||||
{
|
||||
char buf[64*1024];
|
||||
ssize_t l;
|
||||
|
||||
memset(buf, 0, sizeof(buf));
|
||||
while (size > 0) {
|
||||
if ((l = write(fd, buf, sizeof(buf))) < 0)
|
||||
return -1;
|
||||
size -= l;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
config(int argc, char **argv)
|
||||
{
|
||||
int fd, isreg, istmp;
|
||||
char full[64], path[MAXPATHLEN];
|
||||
off_t bssize;
|
||||
struct stat sbuf;
|
||||
struct statfs fsbuf;
|
||||
struct fss_set fss;
|
||||
|
||||
if (argc < 3)
|
||||
usage();
|
||||
|
||||
istmp = 0;
|
||||
|
||||
if (statfs(argv[1], &fsbuf) != 0)
|
||||
err(1, "statfs %s", argv[1]);
|
||||
|
||||
fss.fss_mount = argv[1];
|
||||
fss.fss_bstore = argv[2];
|
||||
if (argc > 3)
|
||||
fss.fss_csize = strsuftoll("cluster size", argv[3], 0, INT_MAX);
|
||||
else
|
||||
fss.fss_csize = 0;
|
||||
if (argc > 4)
|
||||
bssize = strsuftoll("bs size", argv[4], 0, LLONG_MAX);
|
||||
else
|
||||
bssize = (off_t)fsbuf.f_blocks*fsbuf.f_bsize/10;
|
||||
|
||||
/*
|
||||
* Create the backing store. If it is a directory, create a temporary
|
||||
* file and set the unlink flag.
|
||||
*/
|
||||
if ((fd = open(fss.fss_bstore, O_CREAT|O_TRUNC|O_WRONLY, 0600)) < 0) {
|
||||
if (errno != EISDIR)
|
||||
err(1, "create: %s", fss.fss_bstore);
|
||||
snprintf(path, sizeof(path), "%s/XXXXXXXXXX", fss.fss_bstore);
|
||||
if ((fd = mkstemp(path)) < 0)
|
||||
err(1, "mkstemp: %s", path);
|
||||
fss.fss_bstore = path;
|
||||
istmp = 1;
|
||||
}
|
||||
if (fstat(fd, &sbuf) < 0)
|
||||
err(1, "stat: %s", fss.fss_bstore);
|
||||
isreg = S_ISREG(sbuf.st_mode);
|
||||
if (isreg && mkfile(fd, bssize) < 0)
|
||||
err(1, "write %s", fss.fss_bstore);
|
||||
close(fd);
|
||||
|
||||
if ((fd = opendisk(argv[0], O_RDWR, full, sizeof(full), 0)) < 0) {
|
||||
if (istmp)
|
||||
unlink(fss.fss_bstore);
|
||||
err(1, "open: %s", argv[0]);
|
||||
}
|
||||
|
||||
if (ioctl(fd, FSSIOCSET, &fss) < 0) {
|
||||
if (istmp)
|
||||
unlink(fss.fss_bstore);
|
||||
err(1, "%s: FSSIOCSET", full);
|
||||
}
|
||||
|
||||
if ((xflag || istmp) && isreg && unlink(fss.fss_bstore) < 0)
|
||||
err(1, "unlink: %s", fss.fss_bstore);
|
||||
}
|
||||
|
||||
void
|
||||
unconfig(int argc, char **argv)
|
||||
{
|
||||
int fd;
|
||||
char full[64];
|
||||
|
||||
if (argc != 1)
|
||||
usage();
|
||||
|
||||
if ((fd = opendisk(argv[0], O_RDWR, full, sizeof(full), 0)) < 0)
|
||||
err(1, "open: %s", argv[0]);
|
||||
|
||||
if (ioctl(fd, FSSIOCCLR) < 0)
|
||||
err(1, "%s: FSSIOCCLR", full);
|
||||
}
|
||||
|
||||
void
|
||||
list(int argc, char **argv)
|
||||
{
|
||||
int n, fd;
|
||||
char *dev, path[64], full[64];
|
||||
char clbuf[5], bsbuf[5], tmbuf[64];
|
||||
time_t t;
|
||||
struct fss_get fsg;
|
||||
|
||||
if (argc > 1)
|
||||
usage();
|
||||
|
||||
if (argc > 0)
|
||||
dev = argv[0];
|
||||
else
|
||||
dev = path;
|
||||
|
||||
for (n = 0; ; n++) {
|
||||
if (argc == 0)
|
||||
snprintf(path, sizeof(path), "fss%d", n);
|
||||
if ((fd = opendisk(dev, O_RDONLY, full, sizeof(full), 0)) < 0) {
|
||||
if (argc == 0 && (errno == ENOENT || errno == ENXIO))
|
||||
break;
|
||||
err(1, "open: %s", dev);
|
||||
}
|
||||
|
||||
if (ioctl(fd, FSSIOCGET, &fsg) < 0) {
|
||||
if (errno == ENXIO)
|
||||
printf("%s: not in use\n", dev);
|
||||
else
|
||||
err(1, "%s: FSSIOCGET", full);
|
||||
} else if (vflag) {
|
||||
humanize_number(clbuf, sizeof(clbuf),
|
||||
(int64_t)fsg.fsg_csize,
|
||||
"", HN_AUTOSCALE, HN_B|HN_NOSPACE);
|
||||
|
||||
humanize_number(bsbuf, sizeof(bsbuf),
|
||||
(int64_t)fsg.fsg_bs_size*fsg.fsg_csize,
|
||||
"", HN_AUTOSCALE, HN_B|HN_NOSPACE);
|
||||
|
||||
t = fsg.fsg_time.tv_sec;
|
||||
strftime(tmbuf, sizeof(tmbuf), "%F %T", localtime(&t));
|
||||
|
||||
printf("%s: %s, taken %s, %" PRId64 " clusters of %s"
|
||||
", %s backup\n", dev, fsg.fsg_mount, tmbuf,
|
||||
fsg.fsg_mount_size, clbuf, bsbuf);
|
||||
} else
|
||||
printf("%s: %s\n", dev, fsg.fsg_mount);
|
||||
|
||||
close(fd);
|
||||
|
||||
if (argc > 0)
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
usage(void)
|
||||
{
|
||||
fprintf(stderr, "%s",
|
||||
"usage: fssconfig [-cx] device path backup [cluster [size]]\n"
|
||||
" fssconfig -u device\n"
|
||||
" fssconfig -l [-v] [device]\n");
|
||||
exit(1);
|
||||
}
|
||||
Loading…
Reference in New Issue