topic Re: Continous Access Problem in Disk Enclosures

Continous Access Problem

Paul Hawkins — Mon, 01 Sep 2008 06:44:41 GMT

Hi,

When trying to create a pairing in CA (async)we get the message...

"The specified expanded volume in the RCU is not defined".

Our P-Vol is a 12 way LUSE but the S-Vol is just a large device created from space.

Does the S-Vol have to match the P-Vol in every way? They are the same size but the S-vol is R5 and the P-Vol is Raid1...The S-Vol is single device but the P-Vol is Open-V*12...

Thanks in advance

Re: Continous Access Problem

IBaltay — Mon, 01 Sep 2008 07:41:21 GMT

Hi,
http://bizsupport.austin.hp.com/bc/docs/support/SupportManual/c01210043/c01210043.pdf
page 40 answers your question:
"LUSE PVOL must be paired with an S-VOL of the same size and structure ...

Re: Continous Access Problem

Paul Hawkins — Mon, 01 Sep 2008 08:23:38 GMT

Helpful document.
I had anticipated this and built Open-V*12 to match the p-vol. I still get the error message... Could it be that the status of the s-vol is Normal (Quick Format). Does the status have to be Normal before the pair can be created?

Re: Continous Access Problem

IBaltay — Mon, 01 Sep 2008 08:34:23 GMT

you should check also the CU conditions on page 60 of the above document

Re: Continous Access Problem

Paul Hawkins — Mon, 01 Sep 2008 08:59:38 GMT

Same LU Type.... Does it matter that pvol is Raid1 and svol is raid 5? They are both OpenV*12....

Re: Continous Access Problem

IBaltay — Mon, 01 Sep 2008 09:10:30 GMT

the only condition for LUSE replication is that all PVOL/SVOL LUSE LDEVs must
match in size and order (both LUSE in the pair(. CA does not care on the disk attributes and RAID type.

Re: Continous Access Problem

Paul Hawkins — Mon, 01 Sep 2008 10:13:48 GMT

I still get the error message... Could it be that the status of the s-vol is
Normal (Quick Format).
Does the status have to be Normal before the pair can be created?

Re: Continous Access Problem

IBaltay — Mon, 01 Sep 2008 10:21:45 GMT

check if all the LUSE LDEVs are correctly formated and reformat the one which is not.
(Also the GID/LUN/CU must be appropriate)

Re: Continous Access Problem

Paul Hawkins — Tue, 02 Sep 2008 08:39:10 GMT

Schoolboy error....I was using the CU in the pair definition where I should hae been using the GID... Thanks for the help.

Re: Continous Access Problem

Paul Hawkins — Tue, 02 Sep 2008 08:40:26 GMT

Details above