X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=chiark-utils.git;a=blobdiff_plain;f=backup%2Fiwjbackup.txt;h=a353e757f9be57b18157d138d3b4fa0264390137;hp=4ee23545b62140e47dceabf659a51495ee43683f;hb=54e807bb078502c144f02399fccf3c2056ac3723;hpb=470ba2e9de232758429e7656cfecb18edffabbfa

diff --git a/backup/iwjbackup.txt b/backup/iwjbackup.txt
index 4ee2354..a353e75 100644
--- a/backup/iwjbackup.txt
+++ b/backup/iwjbackup.txt
@@ -15,6 +15,9 @@ brought down to do backups. The defaults are fine.
 settings.pl: generic config file: in particular, the name of the tape
 device is set here.
 
+settings.sh: generic config file for shell scripts.  Currently only
+contains some options for the lvm snapshotter.
+
 tape.*: conventionally, each tape you're going to use in the backup
 cycle has a tape number, a name and a config file.  The tape numbers
 in use at Relativity are digit strings like `512'.  The name is a
@@ -54,18 +57,47 @@ In the fsys.* files:
    run things on a remote machine:
      prefix <prefix-name> <command-part>
   Other lines should be of the form
-    <directory name>   <backup-type>
-  for local backups, or 
-    <directory name>   <backup-type>   <prefix-name>
+    [<device name>:]<directory name> <backup-type>[,<options>]
+  for local backups, or
+    [<device name>:]<directory name> <backup-type>[,<options>] <prefix-name>
   for remote backups.
 The file (including any included files) must end with the word 'end'
 on a line of its own.
 
-Valid values for <backup-type> are `cpio' (uses cpio to produce
-tar-format backups), `dump' (uses dump to dump entire filesystems;
-<directory name> should be a mount-point for this), and `zafio' (uses
-afio to compress each file as it is backed up).  Only `dump' type
-backups perform incremental backups.
+Valid values for <backup-type> are
+  cpio
+    uses cpio to produce tar-format backups
+  dump
+    uses dump to dump entire filesystems
+    <directory name> should be a mount-point
+  gtar
+    uses GNU tar to produce GNU tar format backups and -N-based
+    semi-incrementals (not --incremental or --listed-incremental)
+  zafio
+    uses afio to compress each file as it is backed up
+  ntfsimage
+    for NTFS volumes, requires device name
+Only `dump' and `gtar' type backups perform any kind of incremental
+backups.
+
+<options> is a comma-separated list of <option> or <option>=<value>.
+Options supported:
+
+  gz[i][=<compressionlevel>]
+    Indicates that the whole stream should be compressed with gzip.
+    The compression level defaults to 1 if gz is specified by the
+    level isn't.  gzi appliies only to the incrementals; gz applies to
+    both unless gzi is also specified.  compression level 0 means not
+    to run gzip at all and is the default if gz[i] is not mentioned.
+
+  snap=<snapkind>
+    Indicates that the filesystem should be frozen before the backup
+    by using /etc/chiark-backup/snap/<snapkind>.  See the head comment
+    in /etc/chiark-backup/snap/lvm for details of how this works.
+    When snap= is used, the block device must be specified.
+
+  noinc
+    Suppress incrementals.
 
 expected-diffs is a config file to indicate which 
 filesystems should *not* be backed up. The scripts do a config
@@ -154,12 +186,13 @@ This file is part of chiark backup, a system for backing up GNU/Linux and
 other UN*X-compatible machines, as used on chiark.greenend.org.uk.
 
 chiark backup is:
- Copyright (C) 1997-1998,2000-2001 Ian Jackson <ian@chiark.greenend.org.uk>
+ Copyright (C) 1997-1998,2000-2001,2007
+                    Ian Jackson <ian@chiark.greenend.org.uk>
  Copyright (C) 1999 Peter Maydell <pmaydell@chiark.greenend.org.uk>
 
 This is free software; you can redistribute it and/or modify it under the
 terms of the GNU General Public License as published by the Free Software
-Foundation; either version 2, or (at your option) any later version.
+Foundation; either version 3, or (at your option) any later version.
 
 This is distributed in the hope that it will be useful, but WITHOUT ANY
 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
@@ -167,5 +200,5 @@ FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
 details.
 
 You should have received a copy of the GNU General Public License along
-with this program; if not, write to the Free Software Foundation, Inc.,
-59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+with this program; if not, consult the Free Software Foundation's
+website at www.fsf.org, or the GNU Project website at www.gnu.org.