crypting remote data

david reinares reinareslara at
Mon Mar 10 15:53:24 GMT 2008

Very good this patch...thank you

I've been testing this after patching rsync, and works fine to backup...but
when I'm restoring the crypted data after a while rsync shows
rsync: Failed to close: Bad file descriptor (9)
rsync: Failed dup/close: Bad file descriptor (9)
rsync error: error in IPC code (code 14) at pipe.c(208) [receiver=3.0.0]
rsync error: error in IPC code (code 14) at pipe.c(195) [receiver=3.0.0]
rsync: connection unexpectedly closed (55 bytes received so far) [generator]
rsync error: error in rsync protocol data stream (code 12) at io.c(600)

It's a bit strange. It restores some files before failing, and they are
perfectly decrypted...i'm using openssl as command

On Sat, 2008-03-08 at 18:33 +0100, david reinares wrote:
> rsyncrypto looks fine, but still not which we're looking for.
> Having a complete file updated if a little change happens doesn't
> bother me. We're performing daily rsync, so not many files can be
> changed in a day.
> The real problem is about space and performance. If you want good
> performance yo have to sacrifice space, and vice versa.
> We decided to save space for client. so we copy file by file, crypt
> it, rsync it, and then delete...a hell for performance, starting a
> rsync connection for each file.
> And worst of all, we loose -b functionality, that was really good
> (having not just a copy of the day before but an extra day)...having a
> previous version of destination data
> in a file by file basis is not a god idea.

I don't understand what problem you are having with -b; could you please
clarify?  Suffixed backups should work exactly the same way when
rsyncing one file at a time as they did when you rsynced all the files
at once.  The same is true of backups with --backup-dir, provided that
you use --relative so you can specify the same destination argument for
every run.

> Any idea to get the -b funcionality back again and obtain a compromise
> between space and performance?

To fix the performance while keeping the space usage low, look into the
"source-filter_dest-filter" branch of rsync:

You could run rsync once for all the files and specify your encryption
program as the --source-filter, and rsync would call your encryption
program once per file as needed.

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