I have found this morning this error message on the welcome screen of the console on one esx host:
LVM 4941 : vmhba1:0:1:1 may be snapshot disabling access
See resignaturing section in SAN conf guide.
VMFS Volume Resignaturing
VMFS volume resignaturing allows you to make a hardware snapshot of a VMFS
volume and access that snapshot from an ESX Server system. It involves resignaturing
the volume UUID and creating a new volume label. You can control resignaturing as
! Use the LVM.EnableResignature option to turn auto‐resignaturing on or off
(default is off).
! As a rule, a LUN should appear with the same LUN ID to all hosts that access the
LUN. Under certain circumstances, you need to change this behavior using the
I wont use hardware snapshot of VMFS volume, should i Use the LVM.EnableResignature option to turn auto‐resignaturing on anyway?
This will happen if the ESX servers in the cluster do not have matching LUN IDs set for each VMFS LUN. You should check that first.
have you moved the LUN on your storage system ?
This could change your LUN ID of your LUN.
It will then show this new LUN ID to all your ESX servers, but ESX doesn't like it that the LUN ID's change.