I've been meaning to upgrade my Synology NASes to DSM7. I upgraded my DS415+ last week, and it went smoothly, so today I researched all the packages I have installed on my primary unit, a DS1618+. I found that all but two would upgrade seamlessly; the two trouble packages were Plex Media Server and ZeroTier. Both of these are supported on DSM7 -- see instructions for PMS and ZeroTier -- but are more involved than simply installing a package. In particular, PMS requires a very specific procedure to migrate from DSM6.
I had ZeroTier up and running quickly and easily using the linked instructions, but Plex Media Server gave me a lot of trouble, so I figured I would post about it in case others run into the same issue.
I had PMS running on DSM6, and I wanted to migrate my installation to DSM7. This is not as simple as upgrading a package, so I took care to perform the upgrade as instructed. Following the instructions linked above, I downloaded PMS directly from Plex, then I began a manual installation.
During the installation, the wizard presented an error
indicating a failed install (sorry but I did not take a screenshot).
I then started doing lots of research and tried the installation several times. I also saw the
migration log at /volume1/Plex/Migration.log, and it showed success, so that gave me an
idea: maybe the installation really did succeed, even though the wizard showed a failure.
I cleaned out everything (did a remove+erase of the PMS package, restored /volume1/Plex,
removed /volume1/PlexMediaServer) and reran the installation. Predictably the wizard
showed a failure, and I just left it and tailed the migration log until the log showed success:
Plex Media Server migration to DSM 7 started: Mon Jan 3 15:37:31 EST 2022
=== Mon Jan 3 15:37:31 EST 2022 === Start: Change ownership
=== Mon Jan 3 15:37:38 EST 2022 === Completed: Change ownership
=== Mon Jan 3 15:37:38 EST 2022 === Start: Convert symbolic links
=== Mon Jan 3 15:38:55 EST 2022 === Completed: Convert symbolic links
=== Mon Jan 3 15:38:55 EST 2022 === Start: Migrate Plex Media Server
=== Mon Jan 3 15:40:42 EST 2022 === Completed: Migrate Plex Media Server
=== Mon Jan 3 15:40:42 EST 2022 === Completed: Migrate Plex Media Server
=== Mon Jan 3 15:40:42 EST 2022 === Start: Clean /volume1/Plex
=== Mon Jan 3 15:40:43 EST 2022 === Completed: Clean /volume1/Plex
I exited the wizard, and all was well.
There is one other change I did on the final, successful installation: when I removed the PMS package after the first install (per instructions it requires two installs for a successful migration from DSM6), I also removed the PlexMediaServer shared folder. Maybe that was key: I did not remove that shared folder after the first install, until my final attempt.
Unfortunately DSM7 is complaining about my 3rd party RAM upgrade (2x 8GB sticks that were removed from my Lenovo M900 when I upgraded that to 32GB), but otherwise DSM7 is great, and the upgrade went smoothly with the exception of Plex.
I am a system engineer in the Raleigh, NC area. My main interests are Unix, VMware, and networking. More about me, and how I got started.