Thank you for the tip!
This command actually those not work - "mount -o soft,tcp,timeo=133,retrans=1 
<remote directory> <local directory>"
Verbose output reports:

mount.nfs: timeout set for Fri May  7 09:58:35 2021
mount.nfs: trying text-based options 
'soft,tcp,timeo=10,retrans=1,vers=4.1,addr=A.A.A.A,clientaddr=B.B.B.B'
mount.nfs: mount(2): Input/output error
mount.nfs: mount system call failed

My previous tests (and cloudstack mounts) that were working were all on NFSv3. 
This is very weird that certain  Cloudstack mounts are made through NFSv3 and 
others through v4. 

I do tried to mount nfs v4 from XenCenter and it failed the same way.
- there is nothing in the XCPNG logs - SMlog or xensource log
- there is no traffic coming to the NFS server nor any traffic is seen on the 
firewall.

I believe there is something wrong with the XCP and Nfs v4 mount request, as 
soon as execute the command with NFS v3 specified it works
"mount -o soft,tcp,timeo=133,retrans=1, vers=3 <remote directory> <local 
directory>"

I will continue to investigate.

Regards,
Jordan


-----Original Message-----
From: Harikrishna Patnala <harikrishna.patn...@shapeblue.com> 
Sent: Thursday, May 6, 2021 5:43 AM
To: users@cloudstack.apache.org
Subject: Re: cannot create template?


[X] This message came from outside your organization


Hi Jordon,

You can try running the below mount command on XCP host which runs during this 
operation to see what is the actual mount problem, you can check it in verbose 
mode too.
"mount -o soft,tcp,timeo=133,retrans=1 <remote directory> <local directory>"

The other error raises a concern of adding unsupported XCP 8.2 version is added 
properly in CloudStack. I see your previous email thread about XCP-ng 8.2 
support.

"Failed to create templateUnsupported command issued: 
org.apache.cloudstack.storage.command.CopyCommand. Are you sure you got the 
right type of server?"

Can you check around the above exception if you get any clue around why exactly 
it failed. You can try the same operations with some lower versions of XCP-ng 
and see if it fails there too.

Regards,
Harikrishna
________________________________
From: Yordan Kostov <yord...@nsogroup.com>
Sent: Wednesday, May 5, 2021 6:17 PM
To: users@cloudstack.apache.org <users@cloudstack.apache.org>
Subject: RE: cannot create template?

It seems the host tries to mount the NFS and move the template there.
Unfortunately it cannot happen even though NFS can be mounted manualy or 
through Cloudstack when instances are deployed.

Output from XCPNG log files -> /var/log/cloud/cloud.log the following messages 
are seen.

DEBUG [root] Unexpected error while trying to mount x.x.x.x:/var/secondary to 
/var/run/cloud_mount/5c3a0c95-719c-4b1b-9d09-77f1dd475003
DEBUG [root] create_secondary_storage_folder failed.
DEBUG [root] CommandException raised while trying to umount 
/var/run/cloud_mount/5c3a0c95-719c-4b1b-9d09-77f1dd475003
DEBUG [root] #### CLOUD enter  delete_secondary_storage_folder #### DEBUG 
[root] delete_secondary_storage_folder, args: {'folder': 'template/tmpl/2/211', 
'remoteMountPath': 'x.x.x.x:/var/secondary'} DEBUG [root] Unexpected error 
while trying to mount x.x.x.x:/var/secondary to 
/var/run/cloud_mount/244482cf-48e4-4acf-bcd3-6c37bfac5014
DEBUG [root] delete_secondary_storage_folder failed.
DEBUG [root] CommandException raised while trying to umount 
/var/run/cloud_mount/244482cf-48e4-4acf-bcd3-6c37bfac5014

NFS firewall and XCPNG iptables are disabled.

Best regards,
Jordan




From: Yordan Kostov
Sent: Wednesday, May 5, 2021 1:15 PM
To: 'users@cloudstack.apache.org' <users@cloudstack.apache.org>
Subject: cannot create template?

Hey everyone,

                Bumped into the following error today while trying to create a 
template from ROOT volume.
Environment is: CS 4.15 + XCPNG 8.2 + presetup - Fiber storage

                The process failed with the following error message in the 
management server logs:
callHostPlugin failed for cmd: create_secondary_storage_folder with args 
remoteMountPath: X.X.X.X:/var/secondary, newFolder: template/tmpl/2/206,  due 
to There was a failure communicating with the plugin.

                GUI error is - (Centos 7) Failed to create templateUnsupported 
command issued: org.apache.cloudstack.storage.command.CopyCommand. Are you sure 
you got the right type of server?

                I am not really sure where to start here, there are no 
blockages on the networking side, also the NFS can mount to the hosts 
successfully and instances can be deployed from ISOs.

Best Regards,
Jordan

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