[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

All the NFS datastore are unmounted

Posted on 2012-09-12
16
Medium Priority
?
1,186 Views
Last Modified: 2012-09-19
We have a HA & DRS cluster in our virtual environment. The ESX version is 3.5 and the virtual center version is 2.5.

The storage for all the ESX hosts in this cluster are provided from NetApp storage. The Luns are assigned to all ESX hosts as NFS. So the storage for the ESX is a NFS storage.

All of a sudden in one of the ESX host all the LUNs are shown in the virtual center as inactive. In other ESX hosts they are working fine.

I have checked the configuration of this ESX host with others in the cluster, every thing seems to be fine. Checked with the storage team and they said every thing is fine from their end.

I have enclosed the Logs,  kindly refer.

I need to find a solution for this. Thanks
RDIT0801.txt
0
Comment
Question by:jmohan0302
  • 9
  • 7
16 Comments
 
LVL 124
ID: 38391228
check the Host server can still contact the NFS server?
0
 

Author Comment

by:jmohan0302
ID: 38391404
Yes the Host can contact the NFS server. IN addition to that we have the nfs server names listed in /etc/hosts file as well

I could ping the NFS server but vmkping fails.

Moreover, the NFS shares are configured through VMHBA cards and not through iscsi adaptors
0
 
LVL 124

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1500 total points
ID: 38391427
okay, there is an issue with the VMKernel Portgroup which carries the NFS traffic.
0
Free Backup Tool for VMware and Hyper-V

Restore full virtual machine or individual guest files from 19 common file systems directly from the backup file. Schedule VM backups with PowerShell scripts. Set desired time, lean back and let the script to notify you via email upon completion.  

 

Author Comment

by:jmohan0302
ID: 38391453
Ok. But I am using HBA cards and I need understand here what is the relationship with VMkernal portgroup

We have the VMkernal portgroup for vmotion and not for the iscsi connectivity
0
 
LVL 124
ID: 38391478
VMKernel is a special portgroup which carries iSCSI and NFS traffic.
0
 

Author Comment

by:jmohan0302
ID: 38391487
Ok. You mean to say If I recreate the vmkernal portgroup the issue may fix right
0
 
LVL 124
ID: 38391510
if you have removed it, or you do not have one, YES!
0
 

Author Comment

by:jmohan0302
ID: 38391544
I have the vmkernal portgroup

I changed the NIC Teaming settings , now I could see some of the volumes are mounted
0
 

Author Comment

by:jmohan0302
ID: 38391557
But still some volumes seems to be unmounted
0
 
LVL 124
ID: 38391564
can you vmkping the server.

check the IP address or DNS references, you may need to re-create the connection and datastore names.
0
 

Author Comment

by:jmohan0302
ID: 38392204
Enclosed is the output when I ran the command.

ls -l /vmfs/volumes

I just need to understand why still some datastores are inactvie, while all the NFS volumes are mounted:



[root@rdit0801 root]# esxcfg-nas -l
fc_lin_01_nfs is /vol/fc_lin_01_nfs from fc_lin_01_nfs mounted
fc_w2k3_01 is /vol/fc_w2k3_01_nfs from fc_w2k3_01_nfs mounted
fc_w2k3r2_01_nfs is /vol/fc_w2k3r2_01_nfs from fc_w2k3r2_01_nfs mounted
fc_w2k8_01_nfs is /vol/fc_w2k8_01_nfs from fc_w2k8_01_nfs mounted
fc_w2k8_02_nfs is /vol/fc_w2k8_02_nfs from fc_w2k8_02_nfs mounted
fc_w2k_01_nfs is /vol/fc_w2k_01_nfs from fc_w2k_01_nfs mounted
fc_xp_01_nfs is /vol/fc_xp_01_nfs from fc_xp_01_nfs mounted
sata_191_vault01 is /vol/sata_191_vault01 from sata_191_vault01 mounted
sata_191_vault10 is /vol/sata_191_vault10 from sata_191_vault10 mounted
sata_arch_nfs is /vol/sata_arch_nfs from sata_arch_nfs mounted
sata_bkp_01_nfs is /vol/sata_bkp_01_nfs from sata_bkp_01_nfs mounted
sata_lab_media_01_nfs is /vol/sata_lab_media_01_nfs from sata_lab_media_01_nfs mounted
[root@rdit0801 root]#
LUNS.JPG
0
 
LVL 124
ID: 38392346
ocassionally, nfs mounts do not mount again, incorrect permissions, cannot find the NFS server.

dismount, and just re-create the connection, if the mount is not successful it will report the error message, and reason why.
0
 

Author Comment

by:jmohan0302
ID: 38393465
I am unable to do a vmkping for the unmounted   NFS
0
 
LVL 124

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1500 total points
ID: 38393662
there is still a network issue communicating with that NAS.
0
 

Assisted Solution

by:jmohan0302
jmohan0302 earned 0 total points
ID: 38400994
Thanks a lot. The issue is resolved. In the Vmkernal port group we have NIC teaming is configured. Though NIC teaming is configured, the connectivity through one of the VMnic is really not connected fully. So some of the Luns are tried reaching through vmnic which is not fully connected. After breaking the Teaming the issue is resolved
0
 

Author Closing Comment

by:jmohan0302
ID: 38412954
Good
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, I will show you HOW TO: Perform a Physical to Virtual (P2V) Conversion the easy way from a computer backup (image).
In this article will go through how to backup a vPostgres DB from a broken vCenter Appliance and restore to a new vCenter Appliance.
Teach the user how to rename, unmount, delete and upgrade VMFS datastores. Open vSphere Web Client: Rename VMFS and NFS datastores: Upgrade VMFS-3 volume to VMFS-5: Unmount VMFS datastore: Delete a VMFS datastore:
This Micro Tutorial walks you through using a remote console to access a server and install ESXi 5.1. This example is showing remote access and installation using a Dell server. The hypervisor is the very first component of your virtual infrastructu…
Suggested Courses

834 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question