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Special Forums Hardware Filesystems, Disks and Memory Help finding a Unix friendly RAID 1 backup Post 302522986 by Corona688 on Tuesday 17th of May 2011 12:09:13 PM
Old 05-17-2011
Glad it worked for you.

I needed to do some more research into rsync, I hadn't used it lately, but understand it a bit better now.

If you want to synchronize the contents of the two drives, I'd stick to just updating the /home/ partition, that seems to be where all the changing data is kept:
  1. Plug in the USB drive, and run fdisk -l to see what it shows up as. Your internal disk showed up as sda, so I suspect the external will show up as sdb, but best not to assume.
  2. Mount the external drive's home directory onto /mnt/external. To do this, mkdir -p /mnt/external ; mount /dev/sdb6 /mnt/external.
  3. Use rsync to copy new files to the drive. rsync --dry-run -r -a -H /home/ /mnt/external
  4. Optionally, if you want, use rsync to delete files from /mnt/external that no longer exist in /home/ rsync --dry-run -r --delete -a -H /home/ /mnt/external
  5. umount /mnt/external && sync wait for it to finish and then it will be safe for you to remove the USB drive, if you want to.
Note how I'm doing
Code:
rsync ... /path/ /path2

Having the exact right number of slashes is crucial.

Also, for the record, the various flags I'm giving it have these meanings:
Code:
-r    Recursively, so it checks folders in folders in folders
--dry-run    Only says what it's copying or deleting and doesn't actually do it!
                  Remove when you're confident it's copying what you want where you want.
--delete      Removes files not found in the source from the destination
-a               Preserves many things like ownership and timestamps
-H              Preserves hard links.  May not be necessary, and may improve performance to leave out.


Last edited by Corona688; 05-17-2011 at 01:14 PM..
 

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SVN::Notify::Mirror::Rsync(3pm) 			User Contributed Perl Documentation			   SVN::Notify::Mirror::Rsync(3pm)

NAME
SVN::Notify::Mirror::Rsync - Mirror a repository path via Rsync SYNOPSIS
Use svnnotify in post-commit: svnnotify --repos-path "$1" --revision "$2" --handler Mirror::Rsync --to "/path/to/local/htdocs" [--svn-binary /full/path/to/svn] --rsync-host remote_server [--rsync-delete=[yes|no]] [--rsync-dest "/path/on/remote/server"] [--rsync-args arg1 [--rsync-args arg2...]] [[--rsync-ssh] [--ssh-user remote_user] [--ssh-identity /home/user/.ssh/id_rsa]] or better yet, use SVN::Notify::Config for a more sophisticated setup: #!/usr/bin/perl -MSVN::Notify::Config=$0 --- #YAML:1.0 '': PATH: "/usr/bin:/usr/local/bin" 'path/in/repository': handler: Mirror to: "/path/to/www/htdocs" 'some/other/path/in/repository': handler: Mirror to: "/path/to/local/www/htdocs" rsync-host: "remote_host" rsync-dest: "/path/on/remote/www/htdocs" ssh-user: "remote_user" ssh-identity: "/home/user/.ssh/id_rsa" DESCRIPTION
Keep a directory in sync with a portion of a Subversion repository. Typically used to keep a development web server in sync with the changes made to the repository. This directory can either be on the same box as the repository itself, or it can be remote (via SSH connection). USAGE
Depending on whether the target is a "Local Mirror" or a Remote Mirror, there are different options available. All options are available either as a commandline option to svnnotify or as a hash key in SVN::Notify::Config (see their respective documentation for more details). Working Copy on Local host Because 'svn export' is not able to be consistently updated, the local rsync'd directory must be a full working copy. The remote server will only contain the ordinary files (no Subversion admin files). The files in the working copy must be writeable (preferrably owned) by the user identity executing the hook script (this is the user identity that is running Apache or svnserve respectively). Local Mirror Please see " SVN::Notify::Mirror " for details. Remote Mirror Used for directories not located on the same machine as the repository itself. Typically, this might be a production web server located in a DMZ, so special consideration must be paid to security concerns. In particular, the remote mirror server may not be able to directly access the repository box. o rsync-host This value is required and must be the hostname or IP address of the remote host (where the mirror directories reside). o rsync-delete The default mode of operation is to delete remote files which are not present in the local working copy. NOTE: this will delete any unversioned files in the remote directory tree. Unless you have all of your files under version control, you should pass the "--no-rsync-delete" or "--rsync-delete no" option. o rsync-dest This optional value specifies the path to update on the remote host. If you do not specify this value, the same path as passed in as the "--to" parameter will be used (this may not be what you meant to do). o rsync-args This optional parameter can be used to pass additional commandline options to the rsync command. You can use this multiple times in order to pass multiple options. The default args are "--archive --compress". See the "rsync-ssh" options for using SSH instead of RSH (rather than pass those commands via "--rsync-args" o rsync-ssh This optional parameter signals that you wish to use SSH instead of whatever the default remote shell program is configured in your copy of rsync. You may need to set one or more of the "ssh-*" parameters as well. o ssh-user If the remote user is different than the local user executing the postcommit script, you can specify it with this parameter. You would often use this in conjunction with the next parameter. o ssh-identity This value may be optional and should be the full path to the local identity file being used to authenticate with the remote host. If you are setting the ssh-user to be something other than the local user name, you will typically also have to set the ssh-identity. AUTHOR
John Peacock <jpeacock@cpan.org> COPYRIGHT
Copyright (c) 2005-2008 John Peacock This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. SEE ALSO
SVN::Notify, SVN::Notify::Config, SVN::Notify::Mirror perl v5.14.2 2012-07-04 SVN::Notify::Mirror::Rsync(3pm)
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