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| SVN! aka, Subversion! | |
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| Email from Jamie Rollins about populating an SVN archive, while preserving file time stamps: | We are in the process of installing the 40m directory tree into SVN version control. |
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| ################################################## Recipe to populate empty SVN repository with files, preserving ctime stamps: |
== Using SVN in the control room == It is a secret. Use the method below even from the control room computers. |
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| 1. create an empty repository: | == Getting files from off-site == |
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| /path/to/repo $ svnadmin create foo | There are two methods. Use the first method whenever possible. |
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| 2. add an "unrestricted" pre-revprop-change script to the repository hooks directory [0]: |
Checking out trunk/chans directory |
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| /path/to/repo $ cat > foo/hooks/pre-revprop-change #!/bin/sh REPOS="$1" REV="$2" USER="$3" PROPNAME="$4" ACTION="$5" /path/to/repo $ chmod 755 foo/hooks/pre-revprop-change |
{{{ svn co --username svn40m https://nodus.ligo.caltech.edu:30889/svn/trunk/chans}}} |
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| This allows the script to change the "Last Changed" times of the files to match the ctimes. |
The password is written in the standard place. |
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| 3. check out a working copy of the repository: | Alternative way: |
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| /path/to/wc $ svn checkout file:///path/to/repo/foo | {{{svn co svn+ssh://controls@nodus.ligo.caltech.edu/cvs/cds/caltech/svn/trunk/chans}}} |
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| 4. add the files to the working copy, preserving their ctime stamps: | == A sample session == '''Task''': Making your own directory under trunk/docs/ and put a draft of your potentially novel prize winning paper. |
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| /path/to/wc $ cd foo /path/to/wc/foo $ cp -a /path/to/oldfiles/ . |
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| 5. run the included script [1] in the working copy root: | (1) Make your own directory in the repository. |
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| /path/to/wc/foo $ svn_ctime_checkin | {{{svn mkdir --username svn40m https://nodus.ligo.caltech.edu:30889/svn/trunk/docs/mydir}}} |
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| This will add all the files in the working copy to the repository, and change the SVN "Last Changed" timestamp for every file and directory to be that of the filesystem ctimes. |
(2) Check out the directory you just created. |
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| 6. On every system where you want to checkout a working copy of the repository, uncomment or add the following line to the SVN client-side config file [2]: |
{{{svn co --username svn40m https://nodus.ligo.caltech.edu:30889/svn/trunk/docs/mydir}}} |
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| ~ $ cat >> ~/.subversion/config use-commit-times = yes ~ $ |
(3) Change directory to the checked out directory. |
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| This will tell the SVN client to set file ctimes to be the "Last Changed" time on checkout/update/etc. |
{{{cd mydir}}} |
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| 7. Finally, checkout your working copy of the repository, and note that the original file ctimes are preserved. |
(4) Put your draft into the directory. |
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| A. You might now want to go back and remove the unrestricted pre-revprop-change script, so that users can't change file properties in the future: |
{{{cp /somewhere/ProofOfEverything.tex . }}} |
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| ~ $ rm /path/to/repo/foo/hooks/pre-revprop-change | (5) Put the file under the svn's control. |
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| Here is the test that I ran that demonstrates that it works: | {{{svn add ProofOfEverything.tex}}} |
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| servo:/tmp/cdtemp.sf7635 0$ ls svn_ctime_checkin servo:/tmp/cdtemp.sf7635 0$ svnadmin create foo servo:/tmp/cdtemp.sf7635 0$ cat > foo/hooks/pre-revprop-change #!/bin/sh REPOS="$1" REV="$2" USER="$3" PROPNAME="$4" ACTION="$5" servo:/tmp/cdtemp.sf7635 0$ chmod 755 foo/hooks/pre-revprop-change servo:/tmp/cdtemp.sf7635 0$ svn checkout file:///tmp/cdtemp.sf7635/foo bar Checked out revision 0. servo:/tmp/cdtemp.sf7635 0$ cd bar servo:/tmp/cdtemp.sf7635/bar 0$ cp -a ~/matlab/bin/chaos.m . servo:/tmp/cdtemp.sf7635/bar 0$ ls -l total 4 -rw-r--r-- 1 jrollins jrollins 248 2005-09-10 16:58 chaos.m servo:/tmp/cdtemp.sf7635 0$ date +"%Y-%m-%d" 2008-02-12 servo:/tmp/cdtemp.sf7635/bar 0$ ../svn_ctime_checkin svn propset svn:date 2005-09-10T20:58:09.000000Z --revprop -r HEAD property 'svn:date' set on repository revision 0 A chaos.m Adding chaos.m Transmitting file data . Committed revision 1. property 'svn:date' set on repository revision 1 ready servo:/tmp/cdtemp.sf7635/bar 0$ ls -l total 4 -rw-r--r-- 1 jrollins jrollins 248 2005-09-10 16:58 chaos.m servo:/tmp/cdtemp.sf7635/bar 0$ cd .. servo:/tmp/cdtemp.sf7635 0$ grep use-commit-times ~/.subversion/config ### Set use-commit-times to make checkout/update/switch/revert use-commit-times = yes servo:/tmp/cdtemp.sf7635 0$ svn checkout file:///tmp/cdtemp.sf7635/foo qux A qux/chaos.m Checked out revision 1. servo:/tmp/cdtemp.sf7635 0$ ls -l qux/ total 4 -rw-r--r-- 1 jrollins jrollins 248 2005-09-10 16:58 chaos.m servo:/tmp/cdtemp.sf7635 0$ |
(6) Check it in to the svn repository. {{{svn ci -m "The first draft"}}} You have to put your comment after {{{-m}}} (7) Update your working copy. {{{svn up}}} (8) Delete the file from the repository because you realized your paper is totally a bullshit. {{{svn delete ProofOfEverything.tex}}} {{{svn ci -m "Oops, I was wrong"}}} However, your crappy paper can still be retrieved from the repository by requesting an old version, because all the history is recorded in the svn world. |
SVN! aka, Subversion!
We are in the process of installing the 40m directory tree into SVN version control.
Using SVN in the control room
It is a secret. Use the method below even from the control room computers.
Getting files from off-site
There are two methods. Use the first method whenever possible.
Checking out trunk/chans directory
svn co --username svn40m https://nodus.ligo.caltech.edu:30889/svn/trunk/chans
The password is written in the standard place.
Alternative way:
svn co svn+ssh://controls@nodus.ligo.caltech.edu/cvs/cds/caltech/svn/trunk/chans
A sample session
Task: Making your own directory under trunk/docs/ and put a draft of your potentially novel prize winning paper.
(1) Make your own directory in the repository.
svn mkdir --username svn40m https://nodus.ligo.caltech.edu:30889/svn/trunk/docs/mydir
(2) Check out the directory you just created.
svn co --username svn40m https://nodus.ligo.caltech.edu:30889/svn/trunk/docs/mydir
(3) Change directory to the checked out directory.
cd mydir
(4) Put your draft into the directory.
cp /somewhere/ProofOfEverything.tex .
(5) Put the file under the svn's control.
svn add ProofOfEverything.tex
(6) Check it in to the svn repository.
svn ci -m "The first draft"
You have to put your comment after -m
(7) Update your working copy.
svn up
(8) Delete the file from the repository because you realized your paper is totally a bullshit.
svn delete ProofOfEverything.tex
svn ci -m "Oops, I was wrong"
However, your crappy paper can still be retrieved from the repository by requesting an old version, because all the history is recorded in the svn world.