X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=man%2Famrestore.8;h=1d330361c74c6f4ad3eec41ebdeb495a6b5f52d8;hb=96f35b20267e8b1a1c846d476f27fcd330e0b018;hp=0e0f418ecf4d6a3508f64bf8c2ec8a51d3b53c26;hpb=0de2ad0a86685398621fb8ffa6990c029681bb3a;p=debian%2Famanda diff --git a/man/amrestore.8 b/man/amrestore.8 index 0e0f418..1d33036 100644 --- a/man/amrestore.8 +++ b/man/amrestore.8 @@ -1,166 +1,290 @@ -.\"Generated by db2man.xsl. Don't modify this, modify the source. -.de Sh \" Subsection -.br -.if t .Sp -.ne 5 -.PP -\fB\\$1\fR -.PP -.. -.de Sp \" Vertical space (when we can't use .PP) -.if t .sp .5v -.if n .sp -.. -.de Ip \" List item -.br -.ie \\n(.$>=3 .ne \\$3 -.el .ne 3 -.IP "\\$1" \\$2 -.. -.TH "AMRESTORE" 8 "" "" "" -.SH NAME -amrestore \- extract backup images from an AMANDA tape -.SH "SYNOPSIS" +'\" t +.\" Title: amrestore +.\" Author: James da Silva +.\" Generator: DocBook XSL Stylesheets vsnapshot_8273 +.\" Date: 11/05/2009 +.\" Manual: System Administration Commands +.\" Source: Amanda 2.6.1p2 +.\" Language: English +.\" +.TH "AMRESTORE" "8" "11/05/2009" "Amanda 2\&.6\&.1p2" "System Administration Commands" +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) .ad l -.hy 0 -.HP 10 -\fBamrestore\fR [\fB\-r\fR | \fB\-c\fR | \fB\-C\fR] [\-b\ \fIblocksize\fR] [\-f\ \fIfileno\fR] [\-l\ \fIlabel\fR] [\-p] [\-h] \fB\fItapedevice\fR\fR | \fB\fIholdingfile\fR\fR | \fB\fIhostname\fR\ [\fIdiskname\fR\ [\fIdatestamp\fR\ [\fIhostname\fR\ [\fIdiskname\fR\ [\fIdatestamp\fR...]]]]]\fR -.ad -.hy - +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +amrestore \- extract backup images from an \fIAmanda\fR tape +.SH "SYNOPSIS" +.HP \w'\fBamrestore\fR\ 'u +\fBamrestore\fR [\-r | \-c | \-C] [\-b | \fIblocksize\fR] [\-f | \fIfileno\fR] [\-l | \fIlabel\fR] [\-p] [\-h] \fItapedevice\fR|\ \fIholdingfile\fR [\fIhostname\fR [\fIdiskname\fR [\fIdatestamp\fR [\fIhostname\fR [\fIdiskname\fR [\fIdatestamp\fR | \&.\&.\&.]]]]]] .SH "DESCRIPTION" - .PP -\fBAmrestore\fR extracts backup images from the tape mounted on \fBtapedevice\fR or from the holding disk file \fBholdingfile\fR that match \fBhostname\fR, \fBdiskname\fR and \fBdatestamp\fR patterns given on the command line\&. The tape or holding file must be in a format written by the \fBamdump\fR or \fBamflush\fR program\&. - +\fBAmrestore\fR +extracts backup images from the tape mounted on +\fItapedevice\fR +or from the holding disk file +\fIholdingfile\fR +that match +\fIhostname\fR, +\fIdiskname\fR +and +\fIdatestamp\fR +patterns given on the command line\&. The tape or holding file must be in a format written by the +\fBamdump\fR +or +\fBamflush\fR +program\&. .PP -If \fBdiskname\fR is not specified, all backups on the tape for the previous \fBhostname\fR are candidates\&. If \fBdatestamp\fR is not specified, all backups on the tape for the previous \fBhostname\fR and \fBdiskname\fR are candidates\&. If no \fBhostname\fR, \fBdiskname\fR or \fBdatestamp\fR are specified, every backup on the tape is a candidate\&. - +If +\fIdiskname\fR +is not specified, all backups on the tape for the previous +\fIhostname\fR +are candidates\&. If +\fIdatestamp\fR +is not specified, all backups on the tape for the previous +\fIhostname\fR +and +\fIdiskname\fR +are candidates\&. If no +\fIhostname\fR, +\fIdiskname\fR +or +\fIdatestamp\fR +are specified, every backup on the tape is a candidate\&. .PP -\fBHostname\fR and \fBdiskname\fR are special expressions described in the "HOST & DISK EXPRESSION" section of \fBamanda\fR(8)\&. \fBDatestamp\fR are special expression described in the "DATESTAMP EXPRESSION" section of \fBamanda\fR(8)\&. For example, if \fBdiskname\fR is "rz[23]a", it would match disks \fBrz2a\fR and \fBrz3a\fR\&. - +\fIHostname\fR +and +\fIdiskname\fR +are special expressions described in the "HOST & DISK EXPRESSION" section of +\fBamanda\fR(8)\&. +\fIDatestamp\fR +are special expression described in the "DATESTAMP EXPRESSION" section of +\fBamanda\fR(8)\&. For example, if +\fIdiskname\fR +is "rz[23]a", it would match disks +\fBrz2a\fR +and +\fBrz3a\fR\&. .PP -\fBDatestamp\fR is useful if \fBamflush\fR writes multiple backup runs to a single tape\&. - +\fIDatestamp\fR +is useful if +\fBamflush\fR +writes multiple backup runs to a single tape\&. .PP -Unless \fB\-p\fR is used, candidate backup images are extracted to files in the current directory named: - +Unless +\fB\-p\fR +is used, candidate backup images are extracted to files in the current directory named: .PP -\fBhostname\&.diskname\&.datestamp\&.dumplevel\fR - +\fIhostname\&.diskname\&.datestamp\&.dumplevel\fR .PP -Amrestore doesn't use a changer, it restore from the tape already loaded in the \fBtapedevice\&.\fR - +Amrestore doesn\'t use a changer, it restore from the tape already loaded in the +\fItapedevice\&.\fR .SH "OPTIONS" - -.TP +.PP \fB\-b\fR -Set the blocksize used to read the tape or holding file\&. All holding files must be read with a blocksize of 32 KBytes\&. \fBAmrestore\fR should normally be able to determine the blocksize for tapes on its own and not need this parameter\&. - +.RS 4 +Set the blocksize used to read the tape or holding file\&. All holding files must be read with a blocksize of 32 KBytes\&. +\fBAmrestore\fR +should normally be able to determine the blocksize for tapes on its own and not need this parameter\&. +.RE .PP The default is 32 KBytes\&. - -.TP +.PP \fB\-f\fR +.RS 4 Do a rewind followed by a fsf before trying to restore an image\&. - -.TP +.RE +.PP \fB\-l\fR -Check if we restoring from the tape with the right \fBlabel\fR - -.TP +.RS 4 +Check if we restoring from the tape with the right +\fIlabel\fR +.RE +.PP \fB\-p\fR -Pipe output\&. The first matching backup image is sent to standard output, which is normally a pipe to \fBrestore\fR or \fBtar\fR, then \fBamrestore\fR quits\&. It may be run again to continue selecting backups to process\&. Make sure you specify the no\-rewind \fBtapedevice\fR when doing this\&. - +.RS 4 +Pipe output\&. The first matching backup image is sent to standard output, which is normally a pipe to +\fBrestore\fR +or +\fBtar\fR, then +\fBamrestore\fR +quits\&. It may be run again to continue selecting backups to process\&. Make sure you specify the no\-rewind +\fItapedevice\fR +when doing this\&. +.RE +.PP +Note: +\fBrestore\fR +may report "short read" errors when reading from a pipe\&. Most versions of +\fBrestore\fR +support a blocking factor option to let you set the read block size, and you should set it to 2\&. See the example below\&. .PP -Note: \fBrestore\fR may report "short read" errors when reading from a pipe\&. Most versions of \fBrestore\fR support a blocking factor option to let you set the read block size, and you should set it to 2\&. See the example below\&. - -.TP \fB\-c\fR -Compress output using the fastest method the compression program provides\&. \fBAmrestore\fR normally writes output files in a format understood by \fBrestore\fR or \fBtar\fR, even if the backups on the tape are compressed\&. With the \fB\-c\fR or \fB\-C\fR option, \fBamrestore\fR writes all files in compressed format, even if the backups on the tape are not compressed\&. Output file names will have a \&.Z or \&.gz extension depending on whether \fBcompress\fR or \fBgzip\fR is the preferred compression program\&. This option is useful when the current directory disk is small\&. - -.TP +.RS 4 +Compress output using the fastest method the compression program provides\&. +\fBAmrestore\fR +normally writes output files in a format understood by +\fBrestore\fR +or +\fBtar\fR, even if the backups on the tape are compressed\&. With the +\fB\-c\fR +or +\fB\-C\fR +option, +\fBamrestore\fR +writes all files in compressed format, even if the backups on the tape are not compressed\&. Output file names will have a +\fB\&.Z\fR +or +\fB\&.gz\fR +extension depending on whether +\fBcompress\fR +or +\fBgzip\fR +is the preferred compression program\&. This option is useful when the current directory disk is small\&. +.RE +.PP \fB\-C\fR -Compress output using the best method the compression program provides (may be very CPU intensive)\&. See the notes above about the \fB\-c\fR option\&. - -.TP +.RS 4 +Compress output using the best method the compression program provides (may be very CPU intensive)\&. See the notes above about the +\fB\-c\fR +option\&. +.RE +.PP \fB\-r\fR -Raw output\&. Backup images are output exactly as they are on the tape, including the \fBamdump\fR headers\&. Output file names will have a \&.RAW extension\&. This option is only useful for debugging and other strange circumstances\&. - -.TP +.RS 4 +Raw output\&. Backup images are output exactly as they are on the tape, including the +\fBamdump\fR +headers\&. Output file names will have a +\fB\&.RAW\fR +extension\&. This option is only useful for debugging and other strange circumstances\&. +.RE +.PP \fB\-h\fR -Header output\&. The tape header block is output at the beginning of each file\&. This is like \fB\-r\fR except \fB\-c\fR or \fB\-C\fR may also be used to compress the result\&. \fBAmrecover\fR uses the header to determine the restore program to use\&. - +.RS 4 +Header output\&. The tape header block is output at the beginning of each file\&. This is like +\fB\-r\fR +except +\fB\-c\fR +or +\fB\-C\fR +may also be used to compress the result\&. +\fBAmrecover\fR +uses the header to determine the restore program to use\&. +.RE .PP If a header is written (\-r or \-h), only 32 KBytes are output regardless of the tape blocksize\&. This makes the resulting image usable as a holding file\&. - +.PP +\fB\-o\fR \fIconfigoption\fR +.RS 4 +See the "\fBCONFIGURATION OVERRIDE\fR" section in +\fBamanda\fR(8)\&. +.RE .SH "EXAMPLES" - .PP -The following does an interactive restore of disk \fBrz3g\fR from host \fBseine\fR, to restore particular files\&. Note the use of the \fBb\fR option to \fBrestore\fR, which causes it to read in units of two 512\-byte blocks (1 Kbyte) at a time\&. This helps keep it from complaining about short reads\&. - +The following does an interactive restore of disk +\fIrz3g\fR +from host +\fIseine\fR, to restore particular files\&. Note the use of the +\fBb\fR +option to +\fBrestore\fR, which causes it to read in units of two 512\-byte blocks (1 Kbyte) at a time\&. This helps keep it from complaining about short reads\&. +.sp +.if n \{\ +.RS 4 +.\} .nf - % amrestore \-p /dev/nrmt9 seine rz3g | restore \-ivbf 2 \- - .fi - +.if n \{\ +.RE +.\} .PP -The next example extracts all backup images for host \fBseine\fR\&. This is the usual way to extract all data for a host after a disk crash\&. - +The next example extracts all backup images for host +\fIseine\fR\&. This is the usual way to extract all data for a host after a disk crash\&. +.sp +.if n \{\ +.RS 4 +.\} .nf - % amrestore /dev/nrmt9 seine - .fi - +.if n \{\ +.RE +.\} .PP -If the backup datestamp in the above example is 19910125 and \fBseine\fR has level 0 backups of disks \fBrz1a\fR and \fBrz1g\fR on the tape, these files will be created in the current directory: - +If the backup datestamp in the above example is +19910125 +and +\fIseine\fR +has level 0 backups of disks +\fIrz1a\fR +and +\fIrz1g\fR +on the tape, these files will be created in the current directory: +.sp +.if n \{\ +.RS 4 +.\} .nf - seine\&.rz1a\&.19910125\&.0 seine\&.rz1g\&.19910125\&.0 - .fi - +.if n \{\ +.RE +.\} .PP -You may also use \fBamrestore\fR to extract a backup image from a holding disk file that has not yet been flushed to tape: - +You may also use +\fBamrestore\fR +to extract a backup image from a holding disk file that has not yet been flushed to tape: +.sp +.if n \{\ +.RS 4 +.\} .nf - % amrestore \-p /amanda/20001119/seine\&.rz1a\&.2 | restore \-ivbf 2 \- - .fi - +.if n \{\ +.RE +.\} .PP -\fBAmrestore\fR may be used to generate a listing of images on a tape: - +\fBAmrestore\fR +may be used to generate a listing of images on a tape: +.sp +.if n \{\ +.RS 4 +.\} .nf - % mt \-f /dev/nrmt9 rewind % amrestore \-p /dev/nrmt9 no\-such\-host > /dev/null - .fi - +.if n \{\ +.RE +.\} .PP -This asks \fBamrestore\fR to find images for host \fBno\-such\-host\fR\&. It will not find any entries that match, but along the way will report each image it skips\&. - +This asks +\fBamrestore\fR +to find images for host +\fBno\-such\-host\fR\&. It will not find any entries that match, but along the way will report each image it skips\&. .SH "CAVEATS" - .PP -\fBGNU\-tar\fR must be used to restore files from backup images created with the GNUTAR dumptype\&. Vendor tar programs sometimes fail to read GNU tar images\&. - -.SH "AUTHOR" - +\fBGNU\-tar\fR +must be used to restore files from backup images created with the GNUTAR dumptype\&. Vendor tar programs sometimes fail to read GNU tar images\&. +.SH "SEE ALSO" .PP -James da Silva, , University of Maryland, College Park: Original text - +\fBamanda\fR(8), +\fBamdump\fR(8), +\fBamflush\fR(8), +\fBtar\fR(1), +\fBrestore\fR(8), +: http://wiki.zmanda.com +.SH "AUTHORS" .PP -Stefan G\&. Weichinger, , maintainer of the \fBAMANDA\fR\-documentation: XML\-conversion - -.SH "SEE ALSO" - +\fBJames da Silva\fR <\&jds@amanda\&.org\&> .PP -\fBamanda\fR(8), \fBamdump\fR(8), \fBamflush\fR(8), \fBtar\fR(1) \fBrestore\fR(8) - +\fBStefan G\&. Weichinger\fR <\&sgw@amanda\&.org\&>