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Re: FSFS packing functionally complete

From: Mark Mielke <mark_at_mark.mielke.cc>
Date: Fri, 28 Nov 2008 11:22:04 -0500

Andreas Schweigstill wrote:
> But when putting multiple revisions into one big file there occurs a new
> problem. Skript like svn-fast-backup.py depend on the current
> implementation of just one revision per file. For doing forensic
> investigations on currupted repositories and backup/restore purposes
> it is also much better to have files in the repository which will never
> change once they have be created in order to store a certain revision.
> So finally I am not sure that there will be some space saving at all if
> you also take into account that for backup purposes the "big revision
> file" will exist several times on the system. Instead hard linking to
> existing files which should never change is quite "cheap"

Unless I'm mis-reading something - I believe this packing would only
apply to "closed" shards. That is, content that will not change (and
this might need to be enforced? prevent revprops in a packed shard from
being updated?).

For hard linking - which I found doubtful as a good backup solution
(changes to the original file also change the backup file - so it's not
really a backup?), why couldn't you hard link the packed file?


Mark Mielke <mark_at_mielke.cc>
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Received on 2008-11-28 17:22:20 CET

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