After installation of VMware vSphere 5.5 Update 1 connectivity to NFS storage could be randomly lost with volumes reporting All Paths Down state. This issue was noticed around mid April and reported here.VMware documented the issue in KB article  2076392 Intermittent NFS APDs on VMware ESXi 5.5 U1

At June 10 VMware released a patch for this issue as described in KB 2077360. The patch can be downloaded using VMware Update Manager or using  VMware download page

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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Tonight I need to configure the Multipath Policy from “Most Recently Used” to “Round Robin (VMware) on our vSphere 4.1 and HP EVA6400 environment. After reading “Configuration best practices for HP StorageWorks Enterprise Virtual Array (EVA) family and VMware vSphere 4” I decided to change the path status

To check the status of the Multipath Policy you can run the following PowerCLI script:

Per host:

Get-VMhost ESXHOST | Get-ScsiLun -LunType disk

Per Cluster:

Get-Cluster CLUSTERNAME| Get-VMHost | Get-ScsiLun -LunType disk

To change the Multipath Policy you can run the following command:

Per Host:

Get-VMHost ESXHOST | Get-ScsiLun -CanonicalName "naa.6005*" | Set-ScsiLun -MultipathPolicy "roundrobin"

Result in vCenter:

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

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Last week I had some trouble by a customer, 4 of my 8 datastores aren’t visible/accessible on the 6 ESX 3.5u2 hosts connected to a (FC) HP MSA1500.  Some datastores become unavailable and some were not affected. Numerous VMs were down, some of those with warning messages like Orphaned and Inaccessible.

Oke.. let’s troubleshoot:

Checking for active paths: esxcfg-mpath -l | grep -i active

FC 6:2.1 210100e08bb27a58<->500508b30091aac9 vmhba1:0:2 On active preferred
FC 6:2.1 210100e08bb27a58<->500508b30091aac9 vmhba1:0:6 On active preferred
Local 70:0.0 vmhba2:0:0 On active preferred
FC 6:2.1 210100e08bb27a58<->500508b30091aac9 vmhba1:0:1 On active preferred
FC 6:2.1 210100e08bb27a58<->500508b30091aac9 vmhba1:0:5 On active preferred
FC 6:2.1 210100e08bb27a58<->500508b30091aac9 vmhba1:0:3 On active preferred
FC 6:2.1 210100e08bb27a58<->500508b30091aac9 vmhba1:0:7 On active preferred
FC 6:2.1 210100e08bb27a58<->500508b30091aac9 vmhba1:0:0 On active preferred
FC 6:2.1 210100e08bb27a58<->500508b30091aac9 vmhba1:0:4 On active preferred

All online!

Checking for death paths: esxcfg-mpath -l | grep -i death

[root@esxmeri01 /]#

None death paths!

Checking my HBA’s connected to the SAN: cd /vmfs/devices/disks and list:  ls vmh*

vmhba1:0:1:0  vmhba1:0:2:1  vmhba1:0:4:0  vmhba1:0:5:1  vmhba1:0:7:0  vmhba2:0:0:1   vmhba2:0:0:3  vmhba2:0:0:6  vmhba2:0:0:9
vmhba1:0:1:1  vmhba1:0:3:0  vmhba1:0:4:1  vmhba1:0:6:0  vmhba1:0:7:1  vmhba2:0:0:10  vmhba2:0:0:4  vmhba2:0:0:7
vmhba1:0:2:0  vmhba1:0:3:1  vmhba1:0:5:0  vmhba1:0:6:1  vmhba2:0:0:0  vmhba2:0:0:2   vmhba2:0:0:5  vmhba2:0:0:8

All online!

Represent LUN’s from HP ACU to ESX hosts:

I unpresent and represented the LUN’s in the HP ACU to the hosts, did a rescan but no still no success

Read more…

sanderdaems

Sander Daems is founder and author of this blog and working as a Sr. Infrastructure Consultant by IT-Value. Sander has over 10 years experience in IT, primary focus: virtualization, storage and SBC

More Posts - Website

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