MULTIPATH

multipath works immediately and as expected. there are no any claims
to multipath itself (except Bug #1240047, Bug #1240049).

problems are begun if you configure more than one initiator for one
physical Emulex CNA interface. obviously this problem relates not only
to multipath but in general to large quantity of initiators configured
in Emulex CNA BIOS.

the cause of this problem is open-iscsi.
'iscsiadm -m fw' will show only some initiators configured in
Emulex CNA BIOS - only one for each physical interface.
'iscsiadm -m discovery -t fw' will return the same implicitly.

further it is more upsetting.

'iscsiadm -m discovery -t fw' or 'iscsiadm -m discovery -t st ...'
(each one separately) can't build working base of nodes.
it gets confused in multipath and generates wild mishmash of
initiators, targets and paths. please note that some of such paths are
incorrect and do not lead to corresponding targets.
so it is impossible to fully automate the definition of nodes, instead
it is required to edit /etc/iscsi/nodes and /etc/iscsi/send_targets
manually.

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https://bugs.launchpad.net/bugs/1238169

Title:
  13.04 server: Fujitsu BX900/DX90 installation problem

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