Hi, all. I'm trying to diagnose some overall slowness issues with some of our backups. In this case, the SD, FD, and Dir, are all running on one host. The storage being backed up from is NFS (or similarly) mounted, and the backup destination is some SAS-attached disks on this particular host.
What I'm seeing is that when a new disk volume is initialized/created, the output of "show storage" hangs up for several minutes, just after the "Used Volume Status:" line. It will return eventually, but it does take 3-5 minutes at least. During the same time, a "show full processlist" on my mysql server (also the same host), shows one of the connections cycling through a lot of queries that look like one of these examples: "SELECT 1 FROM JobMedia WHERE MediaId=11622 LIMIT 1" "SELECT DISTINCT JobMedia.JobId FROM JobMedia,Job WHERE MediaId=11569 AND Job.JobId=JobMedia.JobId AND Job.JobTDate<1382281720" Now, it's possible that the timing of the volume being initialized is just coincidental with these queries. The second query above has what appears to be a timestamp that's approximately 180 days ago (which is our overall retention period), so I assume it has something to do with volume recycling. Any thoughts here? Any pointers that the Bacula gurus here want to pass along, that might help me figure out what's going on? Honestly, I'm not sure what the right questions to ask are, let alone what config information to share with you, etc. For reference, this is on a RHEL 6.4 server with a couple of 8-core Ivy Bridge EP processors, about 128 GB of RAM, and about 75 TB of disk. Bacula version 5.2.13. Thanks, -- Lloyd Brown Systems Administrator Fulton Supercomputing Lab Brigham Young University http://marylou.byu.edu ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
