Hello,
I have been having problems on my ESX 4.1 servers whenever I have to take offline a Datastore to run any maintenance at the storage level.
I remember to have experienced similar issues when I upgraded from ESX 3.5 to 4.0, and VMware released a patch to address this.
VMware ESX 4.0, Patch ESX400-200912401-BG: Updates vmkernel, vmklinux, tools, CIM, and perftools (1016291)
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=101629...
But for ESX 4.1 there are no patches available, so I am wondering if I am the only one experiencing this.
On my case, the moment I remove the LUN the ESX server starts having problems, like losing access through the vSphere Client and failing to execute any vSphere CLI commands.
Any clues on how to prevent this behavior on the ESX server is highly appreciated.
Thanks,
Juan.