Hello, i am testing one the new bacula 7.x features:
*Migration/Copy/VirtualFull Performance Enhancements* The Bacula Storage daemon now permits multiple jobs to simultaneously read the same disk Volume, which gives substantial performance enhancements when running Migration, Copy, or VirtualFull jobs that read disk Volumes. Our testing shows that when running multiple simultaneous jobs, the jobs can finish up to ten times faster with this version of Bacula. This is built-in to the Storage daemon, so it happens automatically and transparently . i our setup we have 2 CopyDiskToTape which go into different pools on Tape storage. our storage is a 2-drive autochanger device. before the copy jobs are started, each drive has mounted a volume of the destination pools. the problem is that both copy jobs only look at drive index 0 and premounted volumes are always swapped (mounted/unmounted) at drive 0. we have a second bacula installation running 5.2.13 which has more or less the same setup and hardware. on this installation parallel copy jobs runs can run without swapping volumes on autochanger drive 0. to overcome the exclusive read-lock limitation in this bacula version we have defined two file storage devices which point to the same location. our sql selects the copy jobs in opposite order for the two jobs, so we can minimize the number of conflicts when one file volume is already locked. my question: has there something changed in bacula 7.x how bacula determines if a volume is already mounted for an autochanger device ? why does bacula not use a premounted volume at drive index 1 ? Best regards Ulrich ------------------------------------------------------------------------------ Put Bad Developers to Shame Dominate Development with Jenkins Continuous Integration Continuously Automate Build, Test & Deployment Start a new project now. Try Jenkins in the cloud. http://p.sf.net/sfu/13600_Cloudbees _______________________________________________ Bacula-devel mailing list Bacula-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-devel
