If you’re not using some sort of Domain mapping, then the use of the same mount by two different sharing services with different uids is going to break ownership. Doesn’t matter if it’s Synology or anything else.
NFSv4 domain mapping solves this by having the same domain configured in client and server. That’s probably your simplest option. From memory, I do believe Synology DOES set uid for whichever user is authenticated via SMB and NFS though, so are you using two different users for these mounts by chance?
If you don’t want to bother to setup LDAP or domain mapping, then just use SMB and that should solve the problem.
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Yeah, Synology and NFSv4 is a bit hit or miss if you don’t use a Kerberos server. I’ve experimented with that back in 2018 to no avail: https://blog.mbirth.uk/2018/01/05/synology-nfsv4-with-id-mapping.html
If you’re not using some sort of Domain mapping, then the use of the same mount by two different sharing services with different uids is going to break ownership. Doesn’t matter if it’s Synology or anything else.
NFSv4 domain mapping solves this by having the same domain configured in client and server. That’s probably your simplest option. From memory, I do believe Synology DOES set uid for whichever user is authenticated via SMB and NFS though, so are you using two different users for these mounts by chance?
If you don’t want to bother to setup LDAP or domain mapping, then just use SMB and that should solve the problem.
Thanks for the feedback. I plan to do some reading on NFSv4 domain mapping this weekend.