I've got an issue that has come up a few times in the last 2 weeks or so. I first noticed this while I was troubleshooting a different issue (CSV failure when ownership changes during backup), but before we installed the hotfix which resolved that issue.
Now, about 4 times in the last 2 weeks, I've found the CSV on my cluster in redirected status when it shouldn't be. it actually shows "Backup in progress, redirected access". It won't let me turn off redirected mode, or even take the csv offline.
This blog post on troubleshooting redirected access seems to describe exactly my issue, under #3:
But it seems to point fingers at the backup application, which would be DPM in this case.
What could be going wrong that causes the cluster not to know the backup is done and release the csv?