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DataServer-IP on Linux Red Hat requirements - problem with communication

  • November 13, 2024
  • 7 replies
  • 117 views
M
Byte
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Hi,

Does the Dataserver-IP feature require any special libraries, packages or customization on Red Hat 9.4? like here:

 

I have 2 Media Agents and I want to share mount paths (LUNs mounted to each MA). But there are some errors eg. with Data Verification or backup:

Cannot connect to Data Server, please make sure desination MediaAgent is up and running and there is no network / connvectivity issue between source and desination Media Agent.

In NFSTtransport log:

3dfs server @ [cv-ma-g02] failed to start, reason: Services/3dfs are not reachable or refusing connection

There is no firewall between them, there are able to cummunicate, services are running but still problem exists. There is no NFS service installed on this server - should I install it?

Best answer by backup

Hi @mateusznitka,

To share the Dataserver IP, we need to enable the ports 111,2049 & 2050 to be opened between two media agents. Make sure these ports are opened. Use cvping to check the connection.

If you are able to connect the ports both ways, add below additional settings on primary Media Agents

nMount3Port and nNFS3Port with values 2050 and 2049 respectively.

3dnfs is the service used when Dataserver-IP share is in place. 3DNFS requires NFS-Ganesha packages to run.

You can also check the service of 3dnfs by using cmd: netstat -tulpn | grep 3dnfs

If any RPMs are missing in these MA’s, this service will won’t run. To check if any RPMs missing, do the following, this will show you the missing RPMs, you need to install them and then restart CV services

  1. Navigate to Installation_Directory/Base
  2. Execute: ./3dnfsd -vm InstanceName -cn ClientName

 

Hope it helps!

Warm Regards,

Sravan Kondeti

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B
Byte
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  • backup
  • Byte
  • 16 replies
  • Answer
  • November 14, 2024

Hi @mateusznitka,

To share the Dataserver IP, we need to enable the ports 111,2049 & 2050 to be opened between two media agents. Make sure these ports are opened. Use cvping to check the connection.

If you are able to connect the ports both ways, add below additional settings on primary Media Agents

nMount3Port and nNFS3Port with values 2050 and 2049 respectively.

3dnfs is the service used when Dataserver-IP share is in place. 3DNFS requires NFS-Ganesha packages to run.

You can also check the service of 3dnfs by using cmd: netstat -tulpn | grep 3dnfs

If any RPMs are missing in these MA’s, this service will won’t run. To check if any RPMs missing, do the following, this will show you the missing RPMs, you need to install them and then restart CV services

  1. Navigate to Installation_Directory/Base
  2. Execute: ./3dnfsd -vm InstanceName -cn ClientName

 

Hope it helps!

Warm Regards,

Sravan Kondeti

Sravan Kondeti
Damian Andre
1 person likes this
  • Damian Andre
    Damian Andre
Rajiv
Vaulter
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  • RajivVaulter
  • Vaulter
  • 316 replies
  • November 14, 2024

Hello ​@mateusznitka 

nfs-utils should be installed on both the MA’s along with rpcbind and make sure they are able to communicate over 2049, 111, 2052.

Entering Required Firewall Settings to Configure DataServer-IP

 

Once done, try to restart the CV services and check using netstat if these ports are listening or not.

Best,

Rajiv Singal

A
Vaulter
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Please follow the documentation in below link

https://documentation.commvault.com/2023e/expert/sharing_mount_path_using_dataserver_ip.html

 

Make sure required firewall settings are configured

https://documentation.commvault.com/2023e/expert/entering_required_firewall_settings_to_configure_dataserver_ip.html

M
Byte
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  • mateusznitka
  • Author
  • Byte
  • 10 replies
  • November 15, 2024

Hi, thank you all for answers.

 

I had missing nfs-ganesha libraries indeed. 

I think it will be good to put information about this packages in documentation.

 

Best regards,

MN

M
Byte
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  • mateusznitka
  • Author
  • Byte
  • 10 replies
  • November 15, 2024

The problem is I don’t see nfs-ganesha packages available for RHEL 9. 

Even on Commvault Store there are nfs-ganesha only for RHEL 7 and 8: https://cloud.commvault.com/webconsole/softwarestore/#!/96/712

How can I get nfs-ganesha for RHEL 9?

T
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  • Tanmoy
  • 2 replies
  • January 6, 2025

Hi,

netstat -tunlp | grep 2050, shows no output

rpcbind and nfs* packages are installed on rhel 9.4

able to do cvping to port 111 & 2049

firewall is off in all MA and CommServ,

Selinux is in Permissive mode. 

backup is getting completed but while restore getting error like: Error Code: [62:2687]
Description: Export / Mount failed for mount path [/backupstorage10/6ILYU6_01.03.2025_16.32/CV_MAGNETIC], please check if the mount path is accessible on Data Server [SISHA820G3-47]. Check the logs for detailed error.
Source: SISHA820G3-45, Process: cvd “

M
Byte
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  • mateusznitka
  • Author
  • Byte
  • 10 replies
  • February 25, 2025

For those having trouble with DataServer-IP on RHEL 9:

I contacted support, for now the only option is to install RHEL 8 on MA, since there is no Ganesha package for RHEL 9.

This should definitely be in the documentation, because it is confusing now - it says it supports RHEL9, but it turns out that one of the basic features does not work on it.

Damian Andre
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  • Damian Andre
    Damian Andre

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