X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=man%2Famrestore.8;h=1d330361c74c6f4ad3eec41ebdeb495a6b5f52d8;hb=e9de482962ca61612054c6e0382814b04e416129;hp=15849198be90a42b12e4852db4ec644c8579e251;hpb=cdbbeef9cde260e429854dd313bc0bf7560e1e24;p=debian%2Famanda diff --git a/man/amrestore.8 b/man/amrestore.8 index 1584919..1d33036 100644 --- a/man/amrestore.8 +++ b/man/amrestore.8 @@ -1,259 +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 "" "" "" +'\" 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 +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- .SH "NAME" -amrestore - extract backup images from an Amanda tape +amrestore \- extract backup images from an \fIAmanda\fR tape .SH "SYNOPSIS" -.HP 10 -\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 ...]]]]]] +.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 +\fItapedevice\fR or from the holding disk file -\fBholdingfile\fR +\fIholdingfile\fR that match -\fBhostname\fR, -\fBdiskname\fR +\fIhostname\fR, +\fIdiskname\fR and -\fBdatestamp\fR -patterns given on the command line. The tape or holding file must be in a format written by the +\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. +program\&. .PP If -\fBdiskname\fR +\fIdiskname\fR is not specified, all backups on the tape for the previous -\fBhostname\fR -are candidates. If -\fBdatestamp\fR +\fIhostname\fR +are candidates\&. If +\fIdatestamp\fR is not specified, all backups on the tape for the previous -\fBhostname\fR +\fIhostname\fR and -\fBdiskname\fR -are candidates. If no -\fBhostname\fR, -\fBdiskname\fR +\fIdiskname\fR +are candidates\&. If no +\fIhostname\fR, +\fIdiskname\fR or -\fBdatestamp\fR -are specified, every backup on the tape is a candidate. +\fIdatestamp\fR +are specified, every backup on the tape is a candidate\&. .PP -\fBHostname\fR +\fIHostname\fR and -\fBdiskname\fR +\fIdiskname\fR are special expressions described in the "HOST & DISK EXPRESSION" section of -\fBamanda\fR(8). -\fBDatestamp\fR +\fBamanda\fR(8)\&. +\fIDatestamp\fR are special expression described in the "DATESTAMP EXPRESSION" section of -\fBamanda\fR(8). For example, if -\fBdiskname\fR +\fBamanda\fR(8)\&. For example, if +\fIdiskname\fR is "rz[23]a", it would match disks \fBrz2a\fR and -\fBrz3a\fR. +\fBrz3a\fR\&. .PP -\fBDatestamp\fR +\fIDatestamp\fR is useful if \fBamflush\fR -writes multiple backup runs to a single tape. +writes multiple backup runs to a single tape\&. .PP Unless -\fB-p\fR +\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 -\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. +.PP +\fB\-b\fR +.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. +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\&. +.PP +\fB\-f\fR +.RS 4 +Do a rewind followed by a fsf before trying to restore an image\&. +.RE .PP -The default is 32 KBytes. -.TP -\fB-f\fR -Do a rewind followed by a fsf before trying to restore an image. -.TP -\fB-l\fR +\fB\-l\fR +.RS 4 Check if we restoring from the tape with the right -\fBlabel\fR -.TP -\fB-p\fR -Pipe output. The first matching backup image is sent to standard output, which is normally a pipe to +\fIlabel\fR +.RE +.PP +\fB\-p\fR +.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 -\fBtapedevice\fR -when doing this. +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 +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. +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 +\fB\-c\fR +.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 +\fBtar\fR, even if the backups on the tape are compressed\&. With the +\fB\-c\fR or -\fB-C\fR +\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 +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 -.gz +\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. -.TP -\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 -\fB-r\fR -Raw output. Backup images are output exactly as they are on the tape, including the +is the preferred compression program\&. This option is useful when the current directory disk is small\&. +.RE +.PP +\fB\-C\fR +.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 +.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 -.RAW -extension. This option is only useful for debugging and other strange circumstances. -.TP -\fB-h\fR -Header output. The tape header block is output at the beginning of each file. This is like -\fB-r\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 +.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 +\fB\-c\fR or -\fB-C\fR -may also be used to compress the result. +\fB\-C\fR +may also be used to compress the result\&. \fBAmrecover\fR -uses the header to determine the restore program to use. +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. -.TP -\fB-o\fR \fIconfigoption\fR -See the "\fBCONFIGURATION OVERWRITE\fR" section in -\fBamanda\fR(8). +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 +\fIrz3g\fR from host -\fBseine\fR, to restore particular files. Note the use of the +\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. +\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 - - +% amrestore \-p /dev/nrmt9 seine rz3g | restore \-ivbf 2 \- .fi -.sp +.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. +\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 -.sp +.if n \{\ +.RE +.\} .PP If the backup datestamp in the above example is 19910125 and -\fBseine\fR +\fIseine\fR has level 0 backups of disks -\fBrz1a\fR +\fIrz1a\fR and -\fBrz1g\fR +\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 - +seine\&.rz1a\&.19910125\&.0 +seine\&.rz1g\&.19910125\&.0 .fi -.sp +.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: .sp +.if n \{\ +.RS 4 +.\} .nf - -% amrestore -p /amanda/20001119/seine.rz1a.2 | restore -ivbf 2 - - +% amrestore \-p /amanda/20001119/seine\&.rz1a\&.2 | restore \-ivbf 2 \- .fi -.sp +.if n \{\ +.RE +.\} .PP \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 - +% mt \-f /dev/nrmt9 rewind +% amrestore \-p /dev/nrmt9 no\-such\-host > /dev/null .fi -.sp +.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. +\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" -.PP -James da Silva, -, University of Maryland, College Park: Original text -.PP -Stefan G. Weichinger, -, maintainer of the -\fBAmanda\fR-documentation: XML-conversion +\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 \fBamanda\fR(8), \fBamdump\fR(8), \fBamflush\fR(8), -\fBtar\fR(1)\fBrestore\fR(8) - +\fBtar\fR(1), +\fBrestore\fR(8), +: http://wiki.zmanda.com +.SH "AUTHORS" +.PP +\fBJames da Silva\fR <\&jds@amanda\&.org\&> +.PP +\fBStefan G\&. Weichinger\fR <\&sgw@amanda\&.org\&>