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Re: New file svn-restore-dumps.py

From: Mark Stead <mark_at_stead.id.au>
Date: Tue, 10 Mar 2009 14:36:06 +1100

Thanks for your feedback.

I've made error checking enhancements and clearly this is an error condition
that should be detected.
It will now complain:

   - If there are no dump files at all in the nominated dump directory.
   - If the repository is a later revision than all dump files.
   - (your test) If it detects there are later dump files but the required
   incremental dumps are missing.

I've also removed an unused function (get_last_dump_rev) that was copied
across from my changes to svn-backup-dumps.py.

So just to clarify on the usage. The script does not require dumps going
back to revision 0. It only requires dumps from the youngest + 1.

Note the "-c" mode of svn-backup-dumps.py will create valid input - but does
create more files than necessary - for example you might get:
dump 100-120
dump 100-130
dump 100-145
Where the older dumps (e.g. 100-120) are not removed, this restore script
should automatically use the 100-145 dump to get to the highest revision.
If you had restored using the 100-120, then you couldn't use the 100-145
dump (without manual editing of the dump file).

This is why I wrote an extension for svn-backup-dumps.py which will now
support "relative incremental" mode (-i). In this mode, you would have the
dumps created as:
dump 100-120
dump 121-130
dump 131-145

You can get the new version of svn-backup-dumps.py here:
http://svn.collab.net/repos/svn/trunk/tools/server-side/svn-backup-dumps.py

I've attached a new revision of svn-restore-dumps.py, plus the diffs against
the previous version.

Also, just to clarify why I've done this. I'm using these scripts to
perform incremental backup - and keep my home & work repository up-to-date.

2009/3/10 masaru tsuchiyama <m.tmatma_at_gmail.com>

> Hi
>
> I have tried this script.
>
> Is this intented?
>
> 1. Create backup files by svn-backup-dumps.py
> svn-backup-dumps.py -b -c 100 c:\svnrepos c:\backupdir
>
> 2. Delete first dump file to emulate the situation when one of dump
> files is missing.
> del svnrepos.000000-000099.svndmp.bz2
>
> 3. Try to restore from the dumps.
> svn-restore-dumps.py -c c:\testtest\svnrepos c:\backupdir
>
> In step3, the output is "Everything OK" and the script do nothing.
>
> Regards.
> Masaru
>
>
>
>
>
>
> 2009/3/9 Mark Stead <mark_at_stead.id.au>:
> > Hi, I've created a new utility called svn-restore-dumps.py. It is
> intended
> > to be used with dumps created by svn-backup-dumps.py.
> >
> >
> > [[[
> > Add svn-restore-dumps.py, a tool to import dump files created by
> > svn-backup-dumps.py.
> >
> > * tools/server-side/svn-restore-dumps.py: New file.
> > ]]]
> >
>

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Received on 2009-03-10 12:03:26 CET

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