Recover from trespassed LUN on AIX

When a LUN is created through Navisphere Manager it is assigned a default SP owner. (Either SPA or SPB) Running the command powermt restore will attempt to trespass the LUN back to it's default owner if it is not currently already managed by it's default owner.

emcpassive2active is a script that only works on AIX hosts. This script is not 'aware' of the default owner of the LUN and forces a trespass on the LUN specified whether on it's default SP or not.

From the PowerPath 5.1 Release notes page 16:
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When a trespass occurs in a CLARiiON environment, a passive interface becomes the active interface. In this situation, bosboot will fail unless you transfer the rootvg PVID to the newly active interface. To do so, run the command /usr/sbin/emcpassive2active. Once you run the command, bosboot will succeed.
Run /usr/sbin/emcpassive2active whenever a trespass occurs. Note: On AIX 5.3 only, a trespassed CLARiiON boot device will hang if you run emcpassive2active and pprootdev fix. OPT 256084 in Table 5 on page 13 provides additional information.
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