NFS mounting broken on newish LX images

[sjorge]

I noticed NFS share mounting was broken when trying to upgrade to a new Ubuntu 20.04 images from 16.04 (new image, not an in place upgrade)

OS	Image Provider	Host	Result
Ubuntu 20.04	Joyent	SmartOS 20210426T094839Z	Broken
Ubuntu 20.04	Joyent	Omnios Bloody	Broken
Ubuntu 20.04	OmniOS	Omnios Bloody	Broken
Ubuntu 18.04	OmniOS	Omnios Bloody	OK
Ubuntu 16.04	Joyent	SmartOS 20210426T094839Z	OK
Ubuntu 16.04	Joyent	Omnios Bloody	OK
Debian 9	Joyent	SmartOS 20210426T094839Z	OK
Debian 9	Joyent	Omnios Bloody	OK
Debian 10	OmniOS	Omnios Bloody	Broken

Doesn't look to be SmartOS specific as OmniOS has the same problem,

I noticed on I noticed rpc.statd fails to start according to systemd, however the process is running when checking with ps. I also noticed that on Ubuntu 20.04 lx_lockd isn't started, but it runs fine manually. I think mount -t nfs never gets to the state where we start lx_lockd.

I also noticed the rpc.statd failure on Ubuntu 18.04 on OmniOS but there mounting works fine. I'm guessing it's a mix of systemd and nfs-common changes that is causing the failure.

[sjorge]

Poke @papertigers

[papertigers]

I think I recall seeing something similar, I will try and trace down what's happening and how viable a fix might be.

[sjorge]

I think the rpc.statd one is a systemd related change systemd/systemd@db256aa but I don't think that is the problem here, as it works fine in 18.04 which also has the rpc.statd issue.

[papertigers]

Okay I have setup one OmniOS sparse zone sharing a directory and one ubuntu 20.04 lx zone.
sharemgr share -F nfs -o anon=1000,ro /share
root@ubuntu20:~# mount -t nfs -o vers=4,ro 192.168.50.13:/share /share

root@ubuntu20:/share# ls
hello

How are you attempting to setup the share via systemd or /etc/fstab?

[papertigers]

Spoke with @sjorge over irc. It seems that mount attempts versions 4.2, 4.1, 4.0, and 3. Specifying -o vers=4 is a workaround for now. Need to do a refresh into how lx_lockd is triggered and what might be happening.

[sjorge]

And trying all them manually, only vers=4 works the others fail.

[Adel-Magebinary]

smartos-live/src/dockerinit/src/dockerinit.c

Line 1293 in 7d7d173

(readonly == B_TRUE) ? "vers=3,sec=sys,ro" : "vers=3,sec=sys",

This might help?