could not verify mount point, check if .mntcheck exists /bin/fog.download

[alperi]

Hello,
on my fog when I try deploy an image I have this error.
version : 1.5.10
.mncheck files are present
NFS server is running
results of : showmount -e 10.20.51.150 are good

root@fogadm:~# find /images/ -name .mntcheck
/images/.mntcheck
/images/dev/.mntcheck

root@fogadm:~# systemctl status nfs-kernel-server.service 
* nfs-server.service - NFS server and services
     Loaded: loaded (/lib/systemd/system/nfs-server.service; enabled; preset: enabled)
    Drop-In: /run/systemd/generator/nfs-server.service.d
             `-order-with-mounts.conf
     Active: active (exited) since Fri 2026-01-16 10:41:43 CET; 30min ago
    Process: 315731 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
    Process: 315732 ExecStart=/usr/sbin/rpc.nfsd (code=exited, status=0/SUCCESS)
   Main PID: 315732 (code=exited, status=0/SUCCESS)
        CPU: 6ms
Jan 16 10:41:43 fogadm systemd[1]: Starting nfs-server.service - NFS server and services...
Jan 16 10:41:43 fogadm systemd[1]: Finished nfs-server.service - NFS server and services.

root@fogadm:~# showmount -e 10.20.51.150
Export list for 10.20.51.150:
/images/dev *
/images     *
## and same result from another computer
alperi@xub-ematt-10:~$ showmount -e 10.20.51.150
Export list for 10.20.51.150:
/images/dev *
/images     *

Fog is installed since September as a Debian Bookwrom container on Proxmox 9 and I have deployed and capture without problem.
I don’t know what happened. Any idea ?
Thanks

[george1421]

@alperi The bit if detail you are missing is what the kernel parameters were that was sent to the fog client. From what you posted it appears that the FOG server has all of the bits in the right spots.

In the kernel parameters that are passed to bzImage during boot up it lists where the FOS engine can find the deployment server. I would verify the IP addresses are correct. If everything appears correct with the parameters, we can debug this a bit more by debug deploy and then manually interact with the fos engine from the target PC’s console.