Permissions error on Synology

Support
1

I am getting a permissions error from Syncthing that I cannot seem to correct. Here is the error:

2019-09-30 22:58:02 Error while trying to start filesystem watcher for folder "TV on Synology" (d***-**9), trying again in 1min: error while traversing /volume1/Media/TV/Dirk Gently's Holistic Detective Agency: permission denied

Permissions on the Dirk Gently directory:

tom@Beeblebrox:/volume1/Media/TV/Dirk Gently's Holistic Detective Agency$ ls -la
total 8
drwxrwxrwx+ 1 tom sc-syncthing   56 Sep 30 23:10 .
drwxrwxrwx+ 1 tom users        4024 Sep 30 22:58 ..
drwxrwxrwx+ 1 tom sc-syncthing 2540 Sep 24 14:29 Season 01
drwxrwxrwx+ 1 tom sc-syncthing 3738 Sep 24 14:36 Season 02
-rwxrwxrwx+ 1 tom syncthing    5011 Sep 21 19:32 tvshow.nfo

I would think with 777 perms on the directory any user could traverse thru, and Syncthing does just fine with any of the ~100 other directories with the same permissions. I’m obviously missing something but I’m fairly new to Synology and Syncthing, so if someone could give me a nudge in the right direction, I would appreciate it.

2

The + in ls output means there are ACLs applied. These override normal permissions. Might have been set via CIFS or something like that, or by the NAS itself for some reason.

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3

I got the same problem，If anyone can fix it, I would appreciate it too, THX!

4

You should read up on how to manage ACLs on your device and fix it yourself, nobody else can fix it for you

5

Thanks for the tip. I am not certain what the “+” is and how it applies to the files/directories, but at least now I know I’m on the right track. I appreciate the nudge.

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6

It looks like dirs/files I’ve copied from a USB drive to the NAS carried the ACLs with them. Changing the permissions on the NAS did nothing, following Synology’s instructions on how to manage ACL’s - while interesting - did not solve it either. I had backups of all of the files on a different USB drive, so I mounted that one, copied to directories back to the NAS, and so far it’s working.

I don’t quite understand how ACL’s work with unix-type permissions, I’ll have to figure out what is happening as I go on here.

7

If nothing else, setfacl -bn seems to be the magic incantation to drop the ACLs and get back to regular dumb permissions.

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8

That’s a dandy tip, thank you.

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9

One last update: Synology’s version of setfacl is “synoacltool”, so I went scouting for some info on how to remove the ACL with that. I came across a post that said if you just use chmod it removes the ACl’s. I tried it: chmod -R a+rwX got rid of the ACL’s. At least now Syncthing isn’t barking at me, and I’l have some time to figure out ACL’s and if I really need them.

Thanks for the replies, they were much appreciated.

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10

Wow, this is better Syno support than I can get from Synology!

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11

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