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RE: [PATCH] WC DB verification 1

From: Bert Huijben <bert_at_qqmail.nl>
Date: Tue, 10 May 2011 02:12:16 +0200

> -----Original Message-----
> From: Mark Phippard [mailto:markphip_at_gmail.com]
> Sent: dinsdag 10 mei 2011 1:16
> To: Julian Foad
> Cc: dev_at_subversion.apache.org
> Subject: Re: [PATCH] WC DB verification 1
> Could we tie it into cleanup? Then other tools like TortoiseSVN,
> Subclipse, AnkhSVN could invoke it too.
> On Mon, May 9, 2011 at 6:30 PM, Julian Foad <julian.foad_at_wandisco.com>
> wrote:
> > I'm planning to commit the attached wc-db-verification-1.patch, subject
> > to any advice on how to best fit it in to the code base or other
> > concerns, in order to get a DB "self-check" function started.
> >
> > I think we need something like this.  Earlier today I found that "svn
> > status" showed I had a clean, single-rev WC, while "svnversion" said it
> > was mixed-rev and switched.  Investigation showed there were orphaned
> > base node rows in the DB which weren't seen by "svn st" but were seen by
> > "svnversion".  I'm not interested in how that particular state came to
> > be, as I've run hundreds of buggy trunk builds on this WC over many
> > months.  What I do want is to be able to run a set of checks on a DB
> > that detects basic rule violations like that.
> >
> > Decisions about when and how to run it can come later.  Of course if we
> > plan to run it frequently and automatically that would mean we'd want to
> > make sure it only did fast checks and is efficiently coded whereas if it
> > remains a manual intervention for devs then that's no concern.  Thoughts
> > about this are welcome too.

I would suggest adding a new function for this purpose; and maybe a separate
program to call it for our beta cycle.
This code should never be necessary once we call the db stable. And making
the normal cleanup very slow makes it less useful for its normal task.

I'm not sure about what you are testing in this initial patch though: The
only functions that can insert rows in NODES always use
svn_relpath_dirname() for creating parent_relpath, so if you find databases
where that set incorrectly you can be 100% certain those databases that are
hand edited.

The parent exists checks are more useful, but should also look at op-depth,
etc. to really find problems. (The op-depth root must always exist and every
intermediate too)

Received on 2011-05-10 02:12:46 CEST

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