[Enhancement Request] I'd like to see the priority algorith adjusted as follows:
If bacula is configured to run jobs concurrently, then all jobs with a priority number less than the current job (ie., scheduled jobs that are more important than the current job) will be allowed to run concurrently with the current job. The lower numbered jobs would be put at the front of the queue of the jobs that have the current priority number. If there are several priorities involved, then the same algorithm would apply, with lower priority numbered jobs being effectively raised to the priority of the running job, but ordered in the queue by their real priority. Obviously, this would be subject to resource constraints (ie, you can't work with two different volumes simultaneously in a single device) and to the date/timestamp specified for job scheduling. This change would be a tremendous improvement in managing multi-drive storage devices. This method of scheduling makes bacula more efficient, allowing higher importance (lower numerical priority) jobs to make use of physical resources as soon as they become available. [Example] Recently, I needed to restore some user files. At the time when I scheduled the job, our tape changer was in use, with backups (priority 10) writing to volumes in both physical drives. The restore jobs were scheduled with a lower priority (6). I was surprised that the restores did not begin when all the backups but one were complete, and when one tape drive was idle. Unfortunately, the backup job that was still active takes over 3 days to complete (~1.5TB over a 100Mbs network). This meant that the restore scheduled on Friday afternoon didn't take place until Monday afternoon, even though there was a vacant tape device the whole time. Essentially, the priority 10 job running in drive 0 blocked a priority 6 job from using the vacant drive 1. Checking the bacula documentation, I see that this is the specified behavior--that when a job of a given priority is running, jobs of a lower priority won't run until the existing job is finished. [Environment] Bacula 1.38.11 Storage Device: PowerVault 132T (2-drive LTO2 autochanger) On a side note, as our department increasingly depends on bacula, I'm glad to see so much discussion on the bacula mailing list and that steps to be taken to ensure the growth and long-term viability of the project. ---- Mark Bergman [EMAIL PROTECTED] System Administrator Section of Biomedical Image Analysis 215-662-7310 Department of Radiology, University of Pennsylvania http://pgpkeys.pca.dfn.de:11371/pks/lookup?search=mark.bergman%40.uphs.upenn.edu The information contained in this e-mail message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail, and delete the original message. ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users