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Large repository with a long checkout problem

From: Troy Curtis Jr <troycurtisjr_at_gmail.com>
Date: 2006-08-05 04:56:57 CEST

Hello all,

I am attempting to convert my the RCS repository that we use at work
over to subversion. I was able to successfully use cvs2svn (with a
couple of tweaks) and got all of our changes into the shiny new
subversion repo. The first issue is that it ballooned a ~1GB RCS
repository to ~2GB, but we can deal with that...especially since it
took us 12 years or so to get the first 1GB. Also, the HEAD revision
is 60202, so there are a lot of commits.

The main problem is checkout times, which are sitting at 5.5 minutes
over LAN. I can get the same code down to 1.5 minutes (which matches
our current method) if I export the HEAD revision and import it into a
brandnew repo. Now, I am using FSFS which I know has longer checkouts
because it must go through all the diffs back to the original version
of each file. I have looked at Berkley DB, but I just know that some
of the more "seasoned" (read: resistant to change) will get very upset
the first time they have to go do a "svnadmin recover", or worse yet,
wait for me to do one.

All that background to ask this question: Is there a way to tell
subversion to build a complete revision at some specific point and
then diff from there on(note that I only care about doing this to the
trunk, the branches can stay where they are). This way the svnserver
will only have to go back a relatively few revisions. But we have to
have the past revisions, so I cannot just start a new repository at
some arbitrary point. Specifically we need the log messages of all
those revisions. Exporting the HEAD, then deleting all the files, and
then importing the exported files would get the fresh copy of the code
set into a specific rev, but then I would not have the logs and
previous diffs for all the prior revisions.

Do you guys have any suggestions on how to solve this? If I cannot
get the fsfs checkout times down, I will have to go to the bdb, but I
just know that some of those guys are really going to give me flack
when the repo gets wedged.


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Received on Sat Aug 5 04:58:07 2006

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