[SOLVED] Fatal Error: Failed to mount NFS Volume

[Tom Elliott]

Please check your /etc/exports file.

I imagine it currently looks like:

/images *(ro,sync,no_wdelay,no_subtree_check,insecure_locks,no_root_squash,insecure,fsid=0)
/images/dev *(rw,async,no_wdelay,no_subtree_check,no_root_squash,insecure,fsid=1)

You will need to change it to read as:

/srv/cifs/SRVADM/images *(ro,sync,no_wdelay,no_subtree_check,insecure_locks,no_root_squash,insecure,fsid=0)
/srv/cifs/SRVADM/images/dev *(rw,async,no_wdelay,no_subtree_check,no_root_squash,insecure,fsid=1)

Save the file and reload with sudo exportfs -a

[arnaudrigole]

Hello,

Thanks for ur help, effectively the /etc/exports file was default; i changed it but now the PXE “Mounting File System” step say

"mouting 10.1.11.64:/srv/cifs/SRVADM/images/dev on /images failed: Connection refused

Which credentials should i use ? i tried with domain account created for fog “adminfog”, with encrypted password, tried with “contoso\adminfog” also, tried with “fog” default storage nod + its password … i dont understand ?

EDIT: ok, i misunderstood one thing… i have already mounted the 10.1.11.64’s shared storage on /srv/cifs/SRVADM/images folder.
So, i think FOG must see this folder as a local folder, no ? so i defined “fog” local credentials, and now, when it reboot, “Mouting File System” step goes “Done”, but i still have “Fatal Error: Failed to mount NFS volume” ??

[ch3i]

@arnaudrigole said:

Hello,

Thanks for ur help, effectively the /etc/exports file was default; i changed it but now the PXE “Mounting File System” step say

"mouting 10.1.11.64:/srv/cifs/SRVADM/images/dev on /images failed: Connection refused

Which credentials should i use ? i tried with domain account created for fog “adminfog”, with encrypted password, tried with “contoso\adminfog” also, tried with “fog” default storage nod + its password … i dont understand ?

The client mount the NFS share without authentication, your problem is not here. I’ve never export a CIFS share via NFS.
The simple way is to enable NFS on your storage instead cifs.

[Quazz]

@arnaudrigole You can’t reexport a directory you’ve mounted with NFS. You need to mount it directly.

[arnaudrigole]

@Quazz

Thanks for your help. So, on fog storage node, instead of setup the “/srv/cifs/SRVADM/images” directory, mounted on a distant server; i setup directly the distant server with shared storage, with contoso credentials?

@ch3i
Désolé mais ça me paraît un peu compliqué, je connais pas vraiment la différence entre les deux. Je pensais que le cifs était utilisé pour monter des partage windows

[Quazz]

@arnaudrigole If NFS is enabled on that server for those directories then yes. If not, you’ll need to set that up.

[arnaudrigole]

@Quazz
But its not what i want to … FOG can’t write on a local directory and i dont understand why … i defined the storage node on /srv/cifs/SRVADM/image which is a directory on FOG server, BUT, i did a “mount -t cifs” on SRVADM distant server which looks OK.
for example, on fog server i create a test.txt file on this /images folder, and i see it on my windows server SRVADM, in D:/DATA_FOG/Images 's shared folder…

[Quazz]

@arnaudrigole FOG needs NFS access, it won’t use CIFS/SAMBA. I believe there is a tutorial on how to switch over to CIFS/SAMBA but it’s not officially supported.

https://forums.fogproject.org/topic/5145/script-to-install-samba-with-settings-for-fog

[arnaudrigole]

@Quazz
OK! But my data server SRVADM is a Windows Server 2008R2… i will look on it to enable NFS. Never did it before

[Sebastian Roth]

@arnaudrigole This might be helpful to you: https://wiki.fogproject.org/wiki/index.php/Windows_Storage_Node

[george1421]

@Sebastian-Roth While researching how to enable a Synology NAS for a storage node, it appears that current versions of FOG require a web server on the storage node too (as far as I can tell). While I haven’t had too much time to investigate, I’m thinking that it wants something in fog/services/ipxe folder

[arnaudrigole]

@Sebastian-Roth
Thank you, i think too !
But the described procedure seems to be not secured! (grant RW access for “all”, “all machines”, “everyone” on shared folders…

the cryptowall “locky” ransomware that we had last week ravaged our datas and infected all folders which was shared with “everyone” rw right…

[Quazz]

@arnaudrigole I’m guessing your CIFS/SAMBA shares are mounted as network drives on other computers, yes?

The NFS shares should only be mounted on computers that are going get their image captured or where an image will be deployed and only for the duration of those actions.

I’ve yet to see a virus sniff out possible NFS connections and then be able to somehow use the correct credentials to then infect the shares, but I guess I could be wrong

[arnaudrigole]

@Quazz
Hi!
Yeah thats it.
Ok, so its why when i type \SRVADM on a Windows computer i don’t see the NFS “FOG” directory i just shared ?

I’ll mount as described in the Sebastian’s procedure, and i’ll come back here so say whats up

[ch3i]

@arnaudrigole said:

@Sebastian-Roth
Thank you, i think too !
But the described procedure seems to be not secured! (grant RW access for “all”, “all machines”, “everyone” on shared folders…

the cryptowall “locky” ransomware that we had last week ravaged our datas and infected all folders which was shared with “everyone” rw right…

Au besoin PM moi sur le forum, je pourrais surement te venir en aide.

[Quazz]

@arnaudrigole That and also because Windows doesn’t support NFS by default.

[ch3i]

@Quazz said:

@arnaudrigole That and also because Windows doesn’t support NFS by default.

Windows support NFS… look at Server 2008/2012 (2008 > NFS V3 et 2012 > NFS V4.1)

[Quazz]

@ch3i Server yes, clients not.

[arnaudrigole]

I’ve another problem…
haven’t the time yet to mount my NFS storage so i keep using /images default directory of FOG; but when i try to download an image on a computer it said …

**FATAL ERROR: Failed to mount NFS volume
*if you believe the filesystem is mounted, make sure you have a file called .mntcheck in the directory you are mouting on the server.
**

i don’t see any “.mntcheck” file in /images and /images/dev…
So i created it with “touch /images/.mntcheck” and “touch /images/dev/.mntcheck” but it still dont work…
Can’t deploy anything now …

[Tom Elliott]

@arnaudrigole Did you edit the /etc/exports so it’s looking at the proper directory? If the CIFS share is still mounted on the server at /srv/cifs/SRVADM/images and your Exports file is still looking at /images and /images doesn’t exist on the FOG Server, it would still have a problem.

If /srv/cifs/SRVADM/images is mounted to the folder /images AND, before the share is mounted, and you create the /images/.mntcheck /images/dev/.mntcheck files, then mount the samba over the TOP of the folder, the mounted folder needs these files so you’d have to run the same touch commands to ensure those files are present on the share as well.

I think there’s almost too much going on to properly assist.

What is going on? Are you still mounting the /srv/cifs/SRVADM/images folder?

What’s in your /etc/exports file?

What version are you running?

Where are you defining the mount?

I could also be chasing a rabbit down a hole as I’m still not sure you can NFS Export a CIFS Share either.

If you’re that worried about security, why are you using a common system that OTHER users are accessing and writing data to as your mount point for where FOG stores its images?