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Full Discussion: copying a large filesystem
Top Forums UNIX for Dummies Questions & Answers copying a large filesystem Post 41622 by thehoghunter on Thursday 9th of October 2003 04:38:12 PM
Old 10-09-2003
As far as the NIS part of your question - if you wanted to bring the one drive up and push users over to it - you would want to change the auto_home map
I moved from a Network Applicance server to a SUN E450 for home directories -
Original map:
-bg,soft,intr toast1.my.com:/vol/home0/home/jfneal
-bg,soft,intr toast1.my.com:/home/&


Final map:
-bg,soft,intr toast1.my.com:/vol/home0/home/jfneal
-bg,soft,intr toaster.my.com:/home1/&

Note that the server changes from toast1 to toaster and /home to /home1. This left all the 'old' home directories intact so I had an on-line backup on the old system. Even if your disk is on the same system you can leave it around for awhile in case users aren't off completely. I moved them during the day and the only ones I had a problem with were the ones that normally never log out (developers and SAs).
{For all of you about to say I should have waited - this was brought about due to upper management stating "You will move out of this building by the end of the week". It actually went pretty smooth considering they had no concern for our problems for doing it - and of course we got big raises and bonuses for our hard work...they just seem to have gotten lost in the mail - but they saved their millions in rent - I bet they got bonuses!}.
 

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LEARN ABOUT DEBIAN

unburden-home-dir

UNBURDEN-HOME-DIR(1)						   User Commands					      UNBURDEN-HOME-DIR(1)

NAME

       unburden-home-dir - unburdens home directories from caches and trashes

SYNOPSIS

       unburden-home-dir [ -n | -u | -f filter ]
       unburden-home-dir ( -h | --help | --version )

DESCRIPTION

       unburden-home-dir  unburdens  the  home	directory from files and directory which cause high I/O or disk usage but are neither important if
       they are lost, e.g. caches or trash directory.

       When being run it moves the files and directories given in the configuration file to a location outside the home directory,  e.g.  /tmp	or
       /scratch, and puts appropriate symbolic links in the home directory instead.

OPTIONS

       -f     just  unburden those directory matched by the given filter (a perl regular expression) -- matches the already unburdened directories
	      if used together with -u.

       -F     Do not check for files in use with lsof before (re)moving files.

       -n     dry run (show what would be done)

       -u     undo (reverse the functionality and put stuff back into the home directory)

       -h, --help
	      show this help

       --version
	      show the program's version

EXAMPLES

       Example configuration files can be found at /usr/share/doc/unburden-home-dir/examples on Debian-based systems and in the etc/ directory	of
       the source tar ball.

FILES

       /etc/unburden-home-dir,	 /etc/unburden-home-dir.list,	~/.unburden-home-dir,  ~/.unburden-home-dir.list,  /etc/default/unburden-home-dir,
       /etc/X11/Xsession.d/95unburden-home-dir

       Read /usr/share/doc/unburden-home-dir/README on debianoid installations or README in the source tar ball for an explanation of these files.

SEE ALSO

       corekeeper (http://openvswitch.org/cgi-bin/gitweb.cgi?p=corekeeper), autotrash(1), agedu(1), bleachbit(1).

       For du(1)-like but more comfortable tools, see ncdu(1) (text-mode), baobab(1) (GNOME), filelight(1) (KDE), xdiskusage(1)  (X  tool  calling
       du(1) itself), or xdu(1) (X tool reading du(1) output from STDIN).

AUTHOR

       Unburden Home Dir is written and maintained by Axel Beckert <beckert@phys.ethz.ch>

LICENSE

       Unburden Home Dir is available under the terms of the GNU General Public License (GPL) version 2 or any later version at your option.

Unburden Home Directory 					     May 2012						      UNBURDEN-HOME-DIR(1)
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