HP Surestore Disk Array FC60 HP SureStore E Disk Array FC60 - (English) Advanc - Page 294

Note Does the primary path selected using LVM impact LUN ownership? Yes. The primary path established using LVM defines the owning controller for the LUN. This may override the controller ownership defined when the LUN was bound. For example, if controller A was identified as the owning controller when the LUN was bound, and LVM subsequently established the primary path to the LUN through controller B, controller B becomes the owning controller. To change the controller ownership of a LUN, type: amcfg -M -c • cntrlrID identifies the controller (A or B) that is being assigned LUN ownership Command Example The following example changes the ownership of LUN 3 to controller B on disk array 0000005EBD20. amcfg -M 3 -c B 0000005EBD20 Replacing a LUN It is possible to replace an existing LUN. This operation unbinds the LUN and then rebinds it using the new parameters specified. This is useful if you wish to change the settings of an existing LUN, such as its size or RAID level, using a single command. CAUTION All data on a LUN is lost when it is replaced. Make sure you backup any important data on the LUN before replacing it. Note Can I replace any LUN on the disk array? Although you can replace any LUN, the replace command is intended to be used with LUN 0. LUN 0 is unique in that it must exist on the disk array to permit communication with the host. Consequently, you cannot unbind LUN 0. If you want to alter LUN 0, you must use the replace command. For all other LUNs, it is recommended that you use the unbind and bind commands to alter LUN configuration. 294 Managing the Disk Array Using Array Manager 60