Maser Posted March 24, 2009 Report Share Posted March 24, 2009 Did an incremental backup of one of my servers to an existing disk media set. This was 22 files (5.4G). 342.2MB/min It's been spinning at "Building Snapshot" now for over 6 minutes as I type this The disk media set currently reports that (and this doesn't refresh until a backup is complete): Files: 859, 563 Used: 180.1GB Free: 154.9 Capacity: 335.0 Grooming is on (set at 10 for a test) Compression is on for the script, but verification is *not* (again, for testing purposes...) External hard disk has 240G free space at the moment. No other backups are running to any other disk sets. Any reason why "Building Snapshot" would take so long? Does this indicate any problems with my "disk" destination set that I need to check? Quote Link to comment Share on other sites More sharing options...
Mayoff Posted March 24, 2009 Report Share Posted March 24, 2009 Building snapshots has never been a fast process. I suspect that the saving of metadata and other volume info for 859,000 files is what Retrospect is doing. The more files in the source, the longer it takes. This is true for 7.6 too. Quote Link to comment Share on other sites More sharing options...
Maser Posted March 24, 2009 Author Report Share Posted March 24, 2009 I did a subsequent backup to the same disk set and building snapshot was very, very quick -- but this was a small number of files (41) and only 5M of data Is there something about the *size* of what is backed up that causes the "building snapshots" to take longer? (This disk set is the one I'm currently rebuilding that I referenced in another thread -- maybe there is a problem with the disk set when this starts happening?) Quote Link to comment Share on other sites More sharing options...
Maser Posted March 25, 2009 Author Report Share Posted March 25, 2009 Watching this do another incremental backup of my 10.5.6 server (as a client). "Building Snapshot" still takes a very, very long time (and I would agree with your concept that because of the *number* of files, it may be an issue. But for my xServe (all over Gig Ethernet), to do an incremental backup of the server from start to finish: Start: 8:44 a.m. Number of files backed up: 27,953 (2.4G) This is with 256-encryption and compression, but *no* verification. Complete finish (including compressing catalog file): 9:41 Log said: Duration: 00:53:20 with *36* minutes idle/loading/preparing And at least 10 minutes of this was building snapshot. Consider this a feature request to speed this up. ;-) Quote Link to comment Share on other sites More sharing options...
Maser Posted April 10, 2009 Author Report Share Posted April 10, 2009 Just FWIW... For my proactive backups of my OSX Servers (which, admittedly have lots of files on them) -- with .608 -- it's still taking an amazingly long time at "Building Snapshot". If there's any way to speed this up in future upgrades, it would be highly appreciated. Quote Link to comment Share on other sites More sharing options...
Mayoff Posted April 10, 2009 Report Share Posted April 10, 2009 We will continue to work on performance improvements in all areas. Quote Link to comment Share on other sites More sharing options...
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