After DSM upgrade, rebooted NAS, then rebooted again
Installed PMS 1.41.1.9057 for DSM 7, but did NOT receive message ‘ERROR: PlexMediaServer does not have full control of Plex share’ as described in ‘Scenario 2’, ‘#2 Migration Bootstrap’ in this guide. Instead, it said ‘Installation Successful’.
At this point I had still not given the new permissions mentioned in the guide above. Because I did not receive the error message, I was confused.
Opening the PMS webUI brought up the setup as if it was a new install.
Uninstalled PMS and ticked the Erase option, rebooted NAS.
Thinking PMS might be broken, I upgraded NAS to DSM 7.2.2, rebooted 2x.
Downloaded PMS 1.41.1.9057 for DSM 7.2.2.
Gave PlexMediaServer user Full Control of the Plex share as shown in the guide above.
Installed PMS 1.41.1.9057 for DSM 7.2.2.
I get the following ‘ERROR: Unable to migrate existing “/volume1/Plex/Library/Application Support/Plex Media Server” to DSM 7. System error 0. Migration log file: /volume1/Plex/Migration.log’. It also says ‘Installation Successful’ right under that.
When I open PMS webUI everything looks back to normal, and players can play content (so far, only tried a couple things).
You didn’t get the initial “PlexMediaServer does not have full control of Plex share” because the permissions assigned the Plex shared folder were altered somewhere along the way and made so restrictive that it couldn’t be read. This resulted in the installer proceeding as if a Fresh Installation.
“System error 0” means you forgot to add “Apply to this folder, sub-folders, and files” when granting “PlexMediaServer” Full Control permission.
When you get “System error 0”, some of the metadata files were not copied.
( I can detect the failure but can’t report which file/directory. This is why you get error 0 )
At this point, Examine your Plex shared folder.
Confirm you still have Plex/Library/Application Support/Plex Media Server and all its subdirectories (Media and Metadata are the most important)
If you have these and wish to rerun the migration.
Stop Plex
Rename the PlexMediaServer shared folder → PlexMediaServer-old
Uninstall the package
Open FileStation
Manually set the permissions of the files & folders for the Plex shared folder again.
– Older systems won’t have “Custom” button.
– In Control Panel - Shared Folder - you must “Convert to Windows ACL”
( This is a failing of the DSM 5 → DSM 6 upgrade)
The package will now detect the Plex shared folder and begin migration
The DSM Package Center will sit at “Installing” while this is happening
– This is normal. Be patient. Do not migrate away from or refresh the page
When it’s complete
– Examine the final message from the installer
– Examine Migration.log in the Plex shared folder
– Confirm nothing from DSM 6 Plex remains there.
Seems ok now. Did as Chuck mentioned and got the ‘Migrated existing Plex…’ message after re-doing permissions and reinstalling. Nothing left in the old ‘Plex’ folder now but the Migration.log.
I could’ve sworn I checked the box to apply to folder, sub-folders, and files… I took note of it when reading the guide and everything. I guess I still missed it while going through with the upgrade.
