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Subject: Re: missing sha-1 after svndumptool
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From: Stephen Butler <sbutler@elego.de>
In-Reply-To: <AF6F041D-2AA9-46CB-9398-834C813B40F2@elego.de>
Date: Fri, 15 Jun 2012 14:12:43 +0200
Cc: users@subversion.apache.org
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Message-Id: <31A24141-DEA1-4157-8BAB-2BFE8AD68FEC@elego.de>
References: <4FDAE1B2.6030808@hmgcc.gsi.gov.uk>
 <AF6F041D-2AA9-46CB-9398-834C813B40F2@elego.de>
To: russellh <russellh@hmgcc.gsi.gov.uk>


On Jun 15, 2012, at 12:18 , Stephen Butler wrote:

>=20
> On Jun 15, 2012, at 9:18 , russellh wrote:
>=20
>> Hi all,
>>=20
>> We have used svndumptool to change all the externals in our =
Subversion repositories during a migration due to a change from http to =
https on our system.
>>=20
>> We noticed that the new file created by svndumptool is missing all =
the sha-1 lines (md5s still in there) that were in the old file however =
everything seems to work OK on testing.
>>=20
>> Is this an issue or is this something we can ignore?
>>=20
>> Cheers,
>>=20
>> Russell
>=20
> Subversion's 'svnadmin load' command checks file content against MD5=20=

> checksums.  For backward compatibility, neither MD5 nor SHA1 is =
required.
>=20
> The 'svnadmin dump' command will write SHA1 checksums, but 'svnadmin=20=

> load' ignores them when parsing a dump file.  For historical reasons,=20=

> svndumpfilter reuses the svnadmin dump-parsing code, so it drops SHA1s
> too.

Whoops, the preceding sentence is incorrect:  svndumpfilter actually =
preserves=20
SHA1 data.

Steve

>=20
> Note that svndumptool is an independent project.  I see in their =
TODO.txt
> "Add support for sha1?".  They're probably waiting for Subversion to =
start
> using the SHA1s.
>=20
> So there's no short-term issue for you to worry about, but I suppose =
it's about
> time we (Subversion) stopped dropping SHA1s when parsing dump files.  =
As=20
> it happens, I'm changing the dump parsing code right now, so I'll add =
that to
> my list.
>=20
> Steve
>=20
> --
> Stephen Butler
> elego Software Solutions GmbH
> http://www.elego.de
>=20

--
Stephen Butler
Consultant

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