Description of problem: At my outher Servers I got Qlogic-FC-Cards they are working well with my SAN in an MPIO mode. Today I got a Server with Emulex LP9802 FC-Cards and see a Harddisk for every path to the LUN. Version-Release number of selected component (if applicable): RHEL4 nativ without any updates at the moment. How reproducible: load the lpfc module Steps to Reproduce: 1. rmmod lpfc 2. modprobe lpfc 3. dmesg Actual results: scsi8 : Emulex LightPulse LP9802 2 Gigabit PCI Fibre Channel Adapter on PCI bus 09 device 10 irq 58 scsi: unknown device type 12 Vendor: HP Model: HSV200 Rev: 5031 Type: RAID ANSI SCSI revision: 05 Attached scsi generic sg7 at scsi8, channel 0, id 0, lun 0, type 12 scsi: unknown device type 12 Vendor: HP Model: HSV200 Rev: 5031 Type: RAID ANSI SCSI revision: 05 Attached scsi generic sg8 at scsi8, channel 0, id 1, lun 0, type 12 scsi: unknown device type 12 Vendor: HP Model: HSV200 Rev: 5031 Type: RAID ANSI SCSI revision: 05 Attached scsi generic sg9 at scsi8, channel 0, id 2, lun 0, type 12 scsi: unknown device type 12 Vendor: HP Model: HSV200 Rev: 5031 Type: RAID ANSI SCSI revision: 05 Attached scsi generic sg10 at scsi8, channel 0, id 3, lun 0, type 12 Expected results: I don't know. Additional info:
The direction that Linux is taking is to make all the lower-level drivers present all paths to a device as separate devices. It is then up to the DM-multipath component to combine the paths into a virtual device. The Qlogic and the Emulex drivers in RHEL 3 and 4 have always done this by default. If your Qlogic driver is combining multiple paths, then I believe you are not using the driver that ships with RHEL, or you are setting some non-default parameter. The output shown above, where you have "unknown device type", "Type: RAID", and sg driver rather than sd driver may be a different problem. Please upgrade to Update 3, make sure that the Emulex HBA has been granted access to the LUNs, and try this again. Post the full /var/log/messages if there is still a problem.
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