Check you ESX/ESXi versions. Also, is it a VMFS3 or VMFS5 datastore?

The UCS storage group is esxi 5.1 vmfs5.

The other storage group is esxi 5.0 vmfs5

But when I add a lun from the UCS storage group to the 5.0 Cluster, a rescan of the hba shows the lun under storage.

What is causing it not to work the other way?

Can you install VSI Storage viewer and confirm if VMAX LUNs are visible from UCS hosts?

Is the HLU # the same for the LUN? I don't think that will prevent you from seeing the datastore but verify that as well.

Hi,

you should check the vmkernel.log file after performing a rescan operation.

And you should check the following VMware article.

ESXi 5.x hosts fail to mount VMFS5 volumes that are formatted with ATS-only capabilities

Hth,

Ralf

yes I can see the clariion luns in vsi.

here is what i see in vmkernel

2013-01-30T18:23:07.740Z cpu18:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:23:07.740Z cpu18:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:23:07.740Z cpu18:9173)FSS: 4972: No FS driver claimed device 'control': Not supported

2013-01-30T18:23:07.841Z cpu18:9173)VC: 1547: Device rescan time 57 msec (total number of devices 7)

2013-01-30T18:23:07.841Z cpu18:9173)VC: 1550: Filesystem probe time 112 msec (devices probed 6 of 7)

2013-01-30T18:26:08.915Z cpu2:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:08.915Z cpu2:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:08.915Z cpu2:9173)FSS: 4972: No FS driver claimed device 'control': Not supported

2013-01-30T18:26:08.937Z cpu2:9173)VC: 1547: Device rescan time 58 msec (total number of devices 7)

2013-01-30T18:26:08.937Z cpu2:9173)VC: 1550: Filesystem probe time 113 msec (devices probed 6 of 7)

2013-01-30T18:26:08.974Z cpu2:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:08.974Z cpu2:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:08.974Z cpu2:9173)FSS: 4972: No FS driver claimed device 'control': Not supported

2013-01-30T18:26:08.992Z cpu2:9173)VC: 1547: Device rescan time 6 msec (total number of devices 7)

2013-01-30T18:26:08.992Z cpu2:9173)VC: 1550: Filesystem probe time 26 msec (devices probed 6 of 7)

2013-01-30T18:26:09.036Z cpu2:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:09.036Z cpu2:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:09.036Z cpu2:9173)FSS: 4972: No FS driver claimed device 'control': Not supported

2013-01-30T18:26:09.049Z cpu2:9173)VC: 1547: Device rescan time 6 msec (total number of devices 7)

2013-01-30T18:26:09.049Z cpu2:9173)VC: 1550: Filesystem probe time 25 msec (devices probed 6 of 7)

2013-01-30T18:26:09.110Z cpu2:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:09.110Z cpu2:9173)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:09.110Z cpu2:9173)FSS: 4972: No FS driver claimed device 'control': Not supported

2013-01-30T18:26:09.123Z cpu2:9173)VC: 1547: Device rescan time 6 msec (total number of devices 7)

2013-01-30T18:26:09.123Z cpu2:9173)VC: 1550: Filesystem probe time 29 msec (devices probed 6 of 7)

2013-01-30T18:26:09.635Z cpu4:9171)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:09.635Z cpu4:9171)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:09.635Z cpu4:9171)FSS: 4972: No FS driver claimed device 'control': Not supported

2013-01-30T18:26:09.661Z cpu4:9171)VC: 1547: Device rescan time 7 msec (total number of devices 7)

2013-01-30T18:26:09.661Z cpu4:9171)VC: 1550: Filesystem probe time 29 msec (devices probed 6 of 7)

tried adding this lun into another ucs host storage group and still same issue...

From what I see, LUNs are visible at SCSI or at storage adapter level but not from datastore level.                                    

Below error seems more of filesystem error

2013-01-30T18:26:09.635Z cpu4:9171)Vol3: 692: Couldn't read volume header from control: Not supported

2013-01-30T18:26:09.635Z cpu4:9171)FSS: 4972: No FS driver claimed device 'control': Not supported

Please refer http://kb.vmware.com/kb/2014155, which talks on one of the related issue.

Also refer http://kb.vmware.com/kb/2004605

Is was an error on my part. I added the wrong lun which is a RDM formatted with ntfs. So other hosts will not see it as a vmfs partition.

thnak for your help