Got it!
There's a conflict between open-iscsi and multipath-tools. After
removing multipath-tools, mounting iSCSI LUNs works fine! So there are
two options:
1. quick fix: mark the conflict in the package meta-data so that they cannot
be installed simultaneously
2. slow fix: work out why
Public bug reported:
Distro: Jaunty
Package: open-iscsi-2.0.870.1-0ubuntu3
Iscsi target: openfiler
Expected outcome: mount succeeds
Actual outcome: mount fails
Details:
I am able to log in to my iSCSI LUN using iscsiadm, but when I try to
mount the partition I get an error. This used to work on