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nicebud
Enthusiast
Enthusiast

san mirror error see vmfs after make mirror active

hello,

I synch mirror two IBM san DS4500 => DS4800 and 2 VMFS lun 1,2 of 1 TB

When I want to make lun on DS 4800 lun active I shut down all my vm change brocade zoning for only see DS 4800 controler rescan san on vmware, I see from vmware all my new path (vmha1:0:1 become think link vmhba1:2:1 ans vmhba2:1:2 become vmhba2:3:2 for example) but nothing is see on storage no vmfs ar mount in /vmfs/volumes/

So I rechange DS 4500 back in production and restart my VM with no error...

what can I have forget ?

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mike_laspina
Champion
Champion

Hi,

You can not write to an active sync or async mirror. You would have to stop the mirror or make a copy of it and then use the copy as writable.

As well if the ESX host detects the same UUID on a diferent LUN it will need to either resignature the volume in order to use it or you will have to change DisallowSnapshotLUN =1 to 0 and this will accept the volume. Be very careful with that function, have a look at this ppt it explains the option very well.

http://blog.laspina.ca/ vExpert 2009
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