On Tue, Apr 21, 2009 at 09:56:47AM -0700, Matthew Dillon wrote: > Here's another question: How many rsnapshots or rsyncs are running > on the destination machine at the same time? Are you backing up > all your other machines and partitions in parallel to the target box?
This machine is pretty much dedicated to backup and file serving. - it runs rsnapshot every 4 hours on the problematic filesystem. Each rsnapshot run gets files in sequence from 7 different machines and 34 directory trees. The target is a 400GB Hammer filesystem on a RAID1 volume (3Ware SATA). This filesystem is mounted nohistory. Rsnapshot takes a _long_ time to rotate its hourly directory snapshots (directory deletion and re-creation, hard-links). My guess would be about 20 minutes per run for this part. Time spent running rsync is quite short in comparison; this filesystem is only running at most one instance of rsync. - every 5 hours it runs a different rsync sequence and gets files from 6 machines and 28 remote directories The target filesystem is a 250GB Hammer volume on a stand-alone SATA disk. There is no special directory rotation, directories are always synchronized in the same place; Hammer snapshots are used for history. I have no trouble with this filesystem. Apart from the backup activities, this machine exports some others (different from the 2 backup fs above) filesystem with NFS. They are lightly used, and then mainly for reading. -- Francois Tigeot
