decoding VNX Unique id to lun/serial number

they can't provide you with output from inq ?

fair enough, i am being cautiously optimistic

They probably dont know what inq is ☺

how often do you gather SPCollects ?

Well..the reason to ask is, we are able to do it for vmax but i dont see why it cant be decoded.

Ofcourse inq and powerpath can help identifying the disk.

But the question still remain.. is there a way ???

If you know which array this LUN resides on you can find this information. It's a bit of a round about way but you can get it. I don't know of any way to identify serial number of the array a LUN resides on from the UID. There may be a way but I don't know it.

If you generate an SP collect there are a number of zip files that make up the SP collect. Extract the *sus.zip file from the *data.zip SP collect file. In that *sus.zip file there is a file called SPx_cfg_info.txt. If you open that file (for either SP) you can use this to find the LUN. You need to take that UID and put a : in between every two numbers. I've taken your UID to demonstrate:

60:06:01:60:0e:70:36:00:5f:41:d9:e7:ff:87:e3:11

Search in that cfg_info file and it should find an entry (if that LUN exists on the array). If you scroll up slightly from where you find that UID it will tell you the LUN name and number.

Here is an example from a lab array here:

LOGICAL UNIT NUMBER 1031

Prefetch size (blocks) =         0

Prefetch multiplier =            0

Segment size (blocks) =          0

Segment multiplier =             0

Maximum prefetch (blocks) =      0

Prefetch Disable Size (blocks) = 0

Prefetch idle count =            0

Prefetching: NO

Prefetched data retained    NO

Read cache configured according to

specified parameters.

Name                        LUN 1031

Minimum latency reads N/A

RAID Type:                  N/A

RAIDGroup ID:               N/A

State:                      Bound

Stripe Crossing:            0

Element Size:               0

Current owner:              SP A

Offset:                     N/A

Auto-trespass:              DISABLED

Auto-assign:                DISABLED

Write cache:                ENABLED

Read cache:                 ENABLED

Idle Threshold:             0

Idle Delay Time:            0

Write Aside Size:           0

Default Owner:              SP A

Rebuild Priority:           N/A

Verify Priority:            N/A

Prct Reads Forced Flushed:  0

Prct Writes Forced Flushed: 0

Prct Rebuilt:               100

Prct Bound:                 100

LUN Capacity(Megabytes):    819200

LUN Capacity(Blocks):       1677721600

UID:                        60:06:01:60:F5:E7:32:00:C3:99:5B:C6:29:0F:E3:11

Is Private:                 NO

Snapshots List:             Not Available

MirrorView Name if any:     Not Available

i've seen clariion port decoder (on elabadvisor) but i have not see any decoders for VNX LUNs.

i am just thinking of how practical this approach is for every day operational activities from customer perspective. You would have to gather SPCollects from multiple arrays and parse the output. In busy shops that information is outdated a couple hours into the work day. I would build something that queries LUN WWNs using symdev list or naviseccli on the fly.

I agree that would be very handy. I don't have the ability to make those changes myself but can pass that around here.

I'm with VNX Support so I don't gather them a lot but I look at them pretty frequently. I wish there were a quicker way to get this same information but I'm not aware of anything like this in Unisphere.

Not a fast or necessarily easy option but the only way I know of to do this.

Hi Vivek,

You need to look at this from host. There are different commands on different host end. First Identify from which array the LUN is coming & you can then find the rest of the details from Storage end.

Thanks

Rakesh