NFS Share of Synology

[idijoost]

Hello everyone,

I recently troubleshooted a problem with an NFS mount on proxmox VE. My proxmox was a fresh an newly installed server. I then tried to mount a Synology NFS share in the Proxmox VE. Proxmox coudn't load the export. And when I filled in the export manual proxmox gave me an error saying that the host is offline.

I then made a post on Reddit about this issue. And a lot of people tried to help and gave some opinions on the problem. I eventually posted pictures here.

I noticed the following:

1. Proxmox can ping the Synology NAS (even though when trying to mount proxmox said server is oflline (error code 500).
2. I can mount the NFS share in a VM on the Proxmox host.
3. I can mount the NFS on a Linux PC other in the network.
4. No firewalls that are blocking the connection.
5. Tried fiddling with the versions of NFS - no luck there.
6. The showmount -e command (and an other that I can't remember) causes the Shell to freeze with no output. Until I CTRL+C out of it.

Eventually I decided to mount the NFS mount in the CLI (Shell) of proxmox. And guess what. Mounted without any Issues. Now I could call it a day, and keep it the way it is now. The only thing I really cant wrap my head around is why is this not working in the GUI? Is this is a bug or something?

- To rule out my install wans't broken or something I reinstalled proxmox on a node and tried to NFS mount from there. Same issue (host is offline).
- The firewall in the pictures and such were all set to open for testing purposes
- I run version 7.3-3

I hope to hear form you soon.

 

[bbgeek17]

Its possible you are affected by this condition https://forum.proxmox.com/threads/pvestatd-nfs-mount-storage-is-not-online.118466/#post-524717

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[idijoost]

Its possible you are affected by this condition https://forum.proxmox.com/threads/pvestatd-nfs-mount-storage-is-not-online.118466/#post-524717

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

I don't really get what I is going on here to be honest. Is this a bug?

 

[bbgeek17]

Historically NFS consisted of many services that worked together - https://web.mit.edu/rhel-doc/3/rhel-rg-en-3/ch-nfs.html
NFSv4 no longer requires rpcbind, some NAS providers allow users to disable it, or dropped it unconditionally.
Up until recently PVE has relied on RPC reply to determine the health of the NFS service. As the conversation in that thread indicates, PVE developers have amended the health check to be move flexible.
The change has not been released yet.

Whether or not its what you are experiencing can be confirmed by running the commands mentioned on above page.
To be pedantic, the code Functions As Designed, so its not a "bug". But it certainly needed an adjustment for current common configurations.

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[idijoost]

Historically NFS consisted of many services that worked together - https://web.mit.edu/rhel-doc/3/rhel-rg-en-3/ch-nfs.html
NFSv4 no longer requires rpcbind, some services allow users to disable it, or drop it unconditionally.
Up until recently PVE has relied on RPC reply to determine the health of the NFS service. As the conversation in that thread indicates, PVE developers have amended the health check to be move flexible.
The change has not been released yet.

Whether or not its what you are experiencing can be confirmed by running the commands mentioned on above page.
To be pedantic, the code Functions As Designed, so its not a "bug". But it certainly needed an adjustment for current common configurations.

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

Thank you very much, so basically (because I can mount it trough CLI) I am not going crazy but probably going to be fixed in the future?

EDIT: any clue on when it is going to be released?

 

[bbgeek17]

EDIT: any clue on when it is going to be released?

Thats a question for developers. They may decide to answer it here, or you can post the question to bugzilla.
You can also apply the code change as a patch manually on your system and see if that resolves your issue.
https://www.howtogeek.com/415442/how-to-apply-a-patch-to-a-file-and-create-patches-in-linux/

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox