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Write permission error and caching problems

PostPosted: Thu May 31, 2018 11:13 am
by Paul R. Williams
I'm currently using DaVinci Resolve Studio 15.0.0B.046.
I had the problem that a project would no longer save. The source of the problem turned out to be a full hard drive that was assigned for caching, etc. Unfortunately I lost some work-time because I was using the short-cut CMD-S to save the project to the disk database and received NO ERROR MESSAGE to say that the project was not saved. In other words, trying to save the project was obviously trying to write out data to the cache, etc. This caused an error which then aborted the project being saved to the disk database WITHOUT ANY WARNING that this had happened. When I tried to close DR later it said the project had not been saved. I then clicked SAVE which again brought me back to the workspace without saving, without any error message and without quitting DR. I then checked in the project manager and saw that the last update was many minutes ago.
I had to force quit DR. I then restarted DR with a new project and set the caching, etc. paths to point to a different non-full external drive. This did not help with the main project I was working on. This means that OPTIMISED MEDIA was still assigned to the full drive - which again resulted in either a pop-up message about not having "write permissions" to the caching, gallery, etc. or still not being able to save the project after changes to it.
The CacheClip directory on the full drive was also corrupted in that the size was shown as 6.75TB on a 3TB drive! So I then deleted the CacheClip directory and ran a disc check on the drive which went OK. I then reassigned the drive on all FOUR settings and I could open the project which now showed MEDIA OFFLINE on the OPTIMISED MEDIA clips. I then regenerated the optimised media for those clips and got back to a working, saveable project (WHEW!)
So please look into what happens when the cache drive fills up on saving projects to ensure that an appropriate error message appears (YOUR CACHE DRIVE IS FULL)?