[Haifux] SVN quota

Shahar Dag dag at cs.technion.ac.il
Thu Jan 21 14:09:44 IST 2010


Hello

As I already said, setting quota on an SVN project is more a meter of 
awareness, then a real disk space limitation.

The idea of using the pre-commit hock to limit the size of a commit is very 
interesting.
Quick google came with several sites:
http://www.davidgrant.ca/limit_size_of_subversion_commits_with_this_hook
http://svn.haxx.se/users/archive-2009-09/0928.shtml
I also found this, but I totally don't understand it
http://lists.freebsd.org/pipermail/svn-src-svnadmin/2008-November/000009.html

I don't have time now to dig into the suggestions. I will update the list 
after I will have a working hock

Shahar
----- Original Message ----- 
From: "Nadav Har'El" <nyh at math.technion.ac.il>
To: "Shahar Dag" <dag at cs.technion.ac.il>
Cc: "Haifaux" <haifux at haifux.org>
Sent: Thursday, January 21, 2010 10:43 AM
Subject: Re: [Haifux] SVN quota


> On Tue, Jan 19, 2010, Shahar Dag wrote about "Re: [Haifux] SVN  quota":
>> It is true that users can't delete data from the SVN.
>> The only thing users can do is ask for additional quota. If they know 
>> that they are running out of quota in advanced, they can ask to enlarge 
>> the quota before they are out of disk space (which usually happens 
>> 01:00 ).
>> Then I can check if the disk space usage is justify and respond on time.
>
> Shachar Shemesh made a very good point. There's very little point in a
> quota system if the person who is reaching the end of his quota can't
> do anything about it to clean up his act. If the only thing he can do is 
> to
> ask you to increase his quota (and you never refuse), why have a quota in 
> the
> first place - to make people feel bad about taking up space? To add
> beaurocracy?
>
> I have several years experience with using and administering SVN 
> repositories,
> and my experience is that problems with repository sizes always stem from 
> one
> issue: that somebody, usually mistakenly or due to lack of understanding 
> of
> what SVN is supposed to do, did one huge commit. E.g., somebody added some
> huge test data or outputs to the repository, which they shouldn't have
> done in the first place. Once the user added a huge commit, Subversion 
> doesn't
> give you any (convenient) facility to remove this commit, or the huge 
> files
> in it, from the history. You can get mails that you are close to your 
> quota
> until hell freezes over - and there's nothing you can do about it but say
> "I'm sorry"...
>
> If you must have SVN quotas, one thing I'd try first is to try to enforce
> first some sort of limit the size of a single commit. For example, if you
> give people a 100 MB quota for the repository, limit a single commit size
> to 30 MB; If somebody fills up more than 30% of his quota in a single
> commit - something is probably wrong. If you let him do it, he'll probably
> be sorry later because he'll not have enough space to continue using his
> repository. Of course, you can play with this 30% number. Perhaps enforce
> this single-commit-quota just after 50% of the total quota is finished -
> or come with whatever policy makes sense for you. Also, you'll need to
> figure out how to enforce this policy :-) (some sort of commmit hook might
> work, but I really didn't try to implement this idea).
>
> Nadav.
>
> -- 
> Nadav Har'El                        |     Thursday, Jan 21 2010, 6 Shevat 
> 5770
> nyh at math.technion.ac.il 
> |-----------------------------------------
> Phone +972-523-790466, ICQ 13349191 |Why aren't fishmongers generous? 
> Their
> http://nadav.harel.org.il           |business makes them selfish.
> 



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