topic Re: relocatepd not same cage type in HPE 3PAR StoreServ Storage

Relocatepd not same cage type

JohanHelmer — Tue, 03 Feb 2015 02:51:43 GMT

Hi All,

I using the following command “relocatepd” to move over some PD, has anybody some experience with this command?

The issue i have is that if I try to move a disk;
Relocatepd start –f 0:9-2:11
I getting the following message back.
Cage 0 and cage 2 are not the same cage type.

Its I an 7200 and cage 0 is also the controller cage. And therefore its different with cage 1,2 and 3.

Do someone now a work around or a fix how I could move over this PD.

output showcage

Id Name LoopA Pos.A LoopB Pos.B Drives Temp RevA RevB Model Side
0 cage0 1:0:1 0 0:0:1 0 18 18-32 3219 3219 DCN1 n/a
1 cage1 1:0:2 1 0:0:2 0 16 19-33 3219 3219 DCS2 n/a
2 cage2 1:0:1 1 0:0:1 1 8 19-34 3219 3219 DCS2 n/a
3 cage3 1:0:2 0 0:0:2 1 6 31-34 3219 3219 DCS2 n/a

thanks a lot
Johan

P.S. This thread has been moved from Storage Area Networks (SAN) (Enterprise) to HP 3PAR StoreServ Storage. - Hp Forum Moderator

Re: relocatepd not same cage type

Dennis Handly — Sat, 31 Jan 2015 07:15:56 GMT

relocatepd isn't documented, you'll need to talk to Support.

Are you trying to physically move a PD to the other cage? Why?

If you have spare disks, you can copy the chunklets.

Re: relocatepd not same cage type

JohanHelmer — Mon, 02 Feb 2015 12:10:50 GMT

Hello Dennis,

I know, cant find mush about it unfortunatly.

Yes trying to meve PD thats why i need this comand, simple reason for its as we have curent 4 cages and al disks ar in the first two cages so need to be spread out over the rest of the cages so they are poplated eaqual.

Its a sceliton test box thats why we need to move it it's not an option just to buy more disks.

Johan

Re: relocatepd not same cage type

Sheldon Smith — Mon, 02 Feb 2015 14:15:48 GMT

You should talk to Sales: HP 3PAR Rebalance Service.

Re: relocatepd not same cage type

JohanHelmer — Mon, 02 Feb 2015 15:04:45 GMT

Raised a call to HP. received the following answer. I am not satisfied on it and would like to now a deep dive. Keep you posted, if someone has a better explanation please let me now.

The “relocatepd” cannot be performed in the manner described in the case as the types of cages are not compatible or the same type of cage, however on deeper inspection I found the following prerequisites needed to perform a “relocatepd” command:

The target disk must exist in the specified source cage and slot
The destination cage and slot must be valid and unoccupied
The source and destination cages must be compatible
For same-node relocation, the destination must not reduce the HA level
For multi-node relocation, the destination must not cause remote I/O

In your case the command failed when the system reached the #3 check, so if you are able to resolve this the “relocatepd” command should complete ok.

Re: relocatepd not same cage type

JohanHelmer — Mon, 02 Feb 2015 15:11:37 GMT

Yes, HP 3PAR Rebalance Service would be an option.

just to give you some back ground 3par is in a test environment and i don’t want to spend money for doing some movements of disks that i could do myself.

this gives me the opportunity to learn.

if it was an production environment i would not hesitated and make sure a HP engineer do this trick.

Re: relocatepd not same cage type

Dennis Handly — Mon, 02 Feb 2015 20:06:47 GMT

>all disks are in the first two cages, so need to be spread out over the rest of the cages

>It's a skeleton test box

Since test system, you could probably shutdown your system and just move the drives.

(You may want to get a "showpd -i" list in case you need to move the drives back.)

>The source and destination cages must be compatible

Hmm, the message says "same", not compatible.

Re: relocatepd not same cage type

JohanHelmer — Thu, 05 Feb 2015 10:39:38 GMT

Hi All,

I had contact with one of the product managers of 3par.

He reached out to some colleagues and confirm that it was a bug. In the next major release this will be fixed.

Also he waits for a possible workaround, if I know more I will post it.

cheers

Re: relocatepd not same cage type

Henry A.C. Jansen — Tue, 28 Jul 2015 12:17:50 GMT

Hi Guys,

Johan is/was right.. seems to be a bug in 3.2.1MU2... We had the same issue relocating drives from a DCN1 to a DCS2 cage.. (Cage with nodes and a simple M6710)...

We flashed the Array to 3.2.1MU3 and now relocatepd works like a charm....

Takes a loooooooong time though...

Regards,

Henry