[svn.haxx.se] · SVN Dev · SVN Users · SVN Org · TSVN Dev · TSVN Users · Subclipse Dev · Subclipse Users · this month's index

Re: A reply to "Diagnosing SVN"

From: Branko Čibej <brane_at_xbc.nu>
Date: 2004-01-29 23:18:53 CET

Greg Hudson wrote:

>(Aside: thanks to Jani Averbach for the small correction.)
>
>On Thu, 2004-01-29 at 15:42, Edmund Horner wrote:
>
>
>>So when are we getting our SQL-backed filesystem? ;-)
>>
>>
>
>I don't know; my personal interest is in developing an FS back end
>backed only by the native filesystem, which could be used over remote
>filesystems. I have some interesting ideas on this front, but I don't
>know how well they will pan out performance-wise.
>
>
>
>>Got any recommendations where to start?
>>
>>
>
>I'd start by reading libsvn_fs/structure. I'm guessing that if you're
>implementing the FS on top of SQL, you'd probably want to use the same
>structure we have there, only instead of "skels" you'd use multiple
>columns. Most of the BDB-specific logic is stashed away in the "bdb"
>directory and in utils/fs_skels.c.
>
>One of the big missing pieces for this work is a vtable which allows
>multiple different FS implementations. Worse, we don't know precisely
>where this vtable should live. An SQL implementation might be able to
>share a lot more common code with the current BDB implementation than my
>native-filesystem implementation can.
>
>

Glenn A. Thompson <gthompson@cdr.net> has done a lot of work in that
direction on the plugabble-db branch, although I think it's quite a bit
out of date at this point.

-- 
Brane Čibej   <brane_at_xbc.nu>   http://www.xbc.nu/brane/
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@subversion.tigris.org
For additional commands, e-mail: dev-help@subversion.tigris.org
Received on Thu Jan 29 23:19:09 2004

This is an archived mail posted to the Subversion Dev mailing list.