Linux running Veritas and zoning change

Question

Anyone else running a Linux environment with Veritas for multipathing?

Would you expect to see devices drop or errors when a zoning change is made to a host prior to removing the access records to the storage?

Trying to pre-stage storage to drop across a reboot and one of the servers seems to have noticed this change for some reason. I've followed this procedure in other environments but not that specific combination of OS/multi-path software.

Does Linux watch for Fabric changes and rescan immediately? Going through connectivity guides and posts and can't find anything to confirm or refute this is the way it should behave.

Looking for similiar experiences. This may also be a Linux thing (running RHEL 4.x) as we have very little Linux in our SAN.

bodnarg · Answer

I think I answered my own question on this one in a round-about way. Looks like Cisco (MDS) switches do hard-zoning by default so it was not an OS difference rather a new set of switches and lack of understanding on my part.

So this is a case of RTFM it appears...

dynamox · Answer

can you share where you download your Cisco documentation ..i only have a couple of CDs that came with the switch. I looked on Powerlink under Home > Support > Technical Documentation and Advisories > Hardware/Platforms Documentation > Connectrix Directors and Switches ..but only see Brocade/McData documentation.

Thanks

bodnarg · Answer

You need to go to the Cisco web site which is where some of the things get confusing. My understanding is that EMC does not OEM or modify anything with the Cisco hardware/software so with the exception of service everything in the Cisco documentation applies.

http://www.cisco.com/en/US/products/hw/ps4159/ps4358/

I launched the documentation from within the Device Manager GUI.

Found the fact that the Cisco switches do hard-zoning buried kind of deep within the documentation. Nice feature - but bad for a lazy Storage Administrator trying to save himself working an early weekend based on old knowledge

dynamox · Answer

thank you

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Linux running Veritas and zoning change

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