Comments on: iTunes Library Backup, rsync & cover art

By: bbum

bbum — Sat, 16 Jan 2010 19:09:48 +0000

It should be noted that the Genius database file is both very large and encrypted. Thus, it is sync’d across nearly in whole every time. As such and because of the increased frequency of video files since writing this, I have bumped the block size back up significantly.

By: Marc

Marc — Thu, 05 Jul 2007 22:25:45 +0000

I am receiving the same Invalid checksum length, and I was a bit confused by the local mode comment. I have a shared drive on my MacBook Pro to where I want to backup data on the MacBook Pro. I seem to get the invalid checksum length everytime I attempt a backup. I am not using SSH for rsh, this is simply a samba share.

Any ideas?

By: Robert Nicholson

Robert Nicholson — Sat, 06 Jan 2007 15:11:12 +0000

Actually it looks like the above problems only occur when you use local mode so as long as you don’t do that rsync works relatively
reliably.

By: Robert Nicholson

Robert Nicholson — Sat, 06 Jan 2007 04:49:55 +0000

And so the only reason why rsync doesn’t crash is because you’re not using extended attributes right?

I mean whenever I rsync b/w two machines I will eventually see

Invalid checksum length 1936852992
rsync error: protocol incompatibility (code 2) at /SourceCache/rsync/rsync-24/rsync/sender.c(59)
rsync: writefd_unbuffered failed to write 103 bytes: phase “unknown” [generator]: Broken pipe (32)
rsync error: error in rsync protocol data stream (code 12) at /SourceCache/rsync/rsync-24/rsync/io.c(909)

By: Denis

Denis — Wed, 03 Jan 2007 23:27:18 +0000

I never had such a problem with the blocksize since I’m using compression with ssh. Simply turn it on with “Compression yes” in /etc/ssh_config. And I assume everybody uses rsync over ssh!

Denis