Iscsi and fcoe thin provision handling – HP EVA P6000 Storage User Manual
Page 144
iSCSI and FCoE thin provision handling
iSCSI and FCoE presented LUNs which experience the thin provision (TP) Overcommitted state, as
detected by P6000 Command View and illustrated in
will generally be
write-protected until the Overcommitted state is cleared. However, there is a special case for
Windows and Windows 2008 FCoE or iSCSI initiators, the TP Overcommitted LUNs are masked
and manual intervention through P6000 Command View is required to remove the mask by
re-presenting the LUN(s) to the iSCSI or FCoE initiator(s).
Note that the TP Overcommitted mask state, only for the iSCSI and FCoE presented LUNs, is cleared
by a restart of both of the iSCSI controllers.
Figure 68 FCoE presented LUN reported as TP Overcommitted
The masking is visible by navigating to the LUN’s presentation tab as illustrated in
, where it can be seen that the LUN is presented to the P6000 iSCSI Host port, but no longer
to a iSCSI or FCoE initiator. A user may walk through the Virtual Disks tabs and note each TP
Overcommited LUN and then present after the TP Overcommited state is cleared. Or a user may
first clear the TP Overcommitted state and then walk through the Virtual Disks presentation tabs
and re-present each LUN listed in the iSCSI HOST 01,02,03,04 lists which are found to no longer
be presented to iSCSI or FCoE initiators.
144 iSCSI or iSCSI/FCoE configuration rules and guidelines