On Wed, 24 Sep 2008 at 6:10pm, Jamie Penman-Smithson wrote
I'm trying to understand why amanda (v2.6.0p2, on RHEL4) is taking so long to backup just 60 Gb, the actual taping appears to only take a fraction of the time. I've double checked that compression is not enabled and in the report (see below) the estimation takes a grand total of 0 minutes. Actually writing the data to tape only took 35 minutes, the dump time was over 4 hours, over 11 hours without using a holding disk (holdingdisk never). The tape server and client are one and the same, it's backing up a local filesystem.
What kind of hardware are we talking about here? How exactly are your disks set up? Where is the holding disk in relation to the filesystem being backed up? What does the data look like (i.e., are there a few big files, or *lots* of small files)? What type of tape drive?
-- Joshua Baker-LePain QB3 Shared Cluster Sysadmin UCSF
