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Re: Lack of Subversion repository recovery tools

From: Toby Thain <toby_at_smartgames.ca>
Date: 2007-06-28 23:51:30 CEST

On 28-Jun-07, at 5:02 PM, Andreas Hasenack wrote:

> On Thu, Jun 28, 2007 at 01:57:16PM -0300, Toby Thain wrote:
>>> I have used BDB with very large repositories (~50Gb) and it
>>> survived many
>>> hardware failures (after running recovery and with proper log files
>>> archived). Now I'm also using FSFS, and had to spend about a week
>>> manually recovering from corruptions (caused by hardware failure).
>>
>> Prevention is better than cure... People really should start
>> looking more
>
> Is this the reason why there is no recovery for FSFS?

It's not clear how much effort to "cure" hardware-caused problems is
worthwhile, especially when a solution is available at a lower layer.
Any discussion of this topic has to begin with asking, "where are the
errors coming from." You mentioned hardware failure. There are two
surefire ways of dealing with it: 1) ZFS 2) backups. A scavenging
tool that is supposed to cope with arbitrary corruption (i.e.
hardware problem) should be a last resort, IMHO? And this scenario is
pretty much guaranteed to result in -some- loss. Hence, "Prevention
is better than cure".

--Toby

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Received on Thu Jun 28 23:52:34 2007

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