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Re: [rdiff-backup-users] [PATCH] Sparse file support

From: Dominic Raferd
Subject: Re: [rdiff-backup-users] [PATCH] Sparse file support
Date: Thu, 06 Jan 2011 09:12:07 +0000
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv: Gecko/20101207 Thunderbird/3.1.7

AFAIK Andrew's last posting on this newsgroup was March 2009, and his last entry in CVS was January 2010, which is indeed the last entry by anyone. Josh (who also created the excellent rdiffWeb GUI front-end) was last seen here April 2010. You could try requesting to become a project member http://savannah.nongnu.org/my/groups.php?words=rdiff-backup#searchgroup?


On 04/01/2011 15:38, D. Kriesel wrote:
I would also love you to be proved wrong, but some weeks ago i asked the head 
developer if he is still active in the project and did not even get an answer.

"Dominic Raferd"<address@hidden>  schrieb:

On 03/01/2011 20:27, Eric Wheeler wrote:
On Sun, Jan 02, 2011 at 08:11:00PM -0800, Eric Wheeler wrote:
Feedback and comments are appreciated!
----Original Message-----
From: Matthew Miller>
How will this interact with existing backups?
rdiff-backup re-writes changed destination files, so if a source file
changes, rdiff-backup will write the whole file after calculating a
reverse-diff for the increment tree.

Existing backup trees will become sparse over time, as files change.

So I guess it is forward-compatible, but not backward-compatible?
Existing repositories can be read fine with rdiff-backup patched for
sparse file support, but repositories created with sparse file support
cannot be read by unpatched rdiff-backup. That's okay, but it might
most of us feel that we would rather not use this patch unless we
specifically need it, until it is part of mainstream rdiff-backup.

Sadly, development of rdiff-backup has gone silent for a while now. I
think these patches are great (as were Daniel Miller's a while ago,
which provided a --verify-full option) but no one from the development
side seems to be updating the code at the moment. (I would love to be
proved wrong.)

- Dominic

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