[Bug 10486] New: kernel 2.6.25 4G FC arrays don't work properly with qla2xxx driver

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http://bugzilla.kernel.org/show_bug.cgi?id=10486

           Summary: kernel 2.6.25  4G FC arrays don't work properly with
                    qla2xxx driver
           Product: SCSI Drivers
           Version: 2.5
     KernelVersion: 2.6.25
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: blocking
          Priority: P1
         Component: QLOGIC QLA2XXX
        AssignedTo: scsi_drivers-qla2xxx@kernel-bugs.osdl.org
        ReportedBy: andrej.filipcic@ijs.si


Latest working kernel version: 2.6.23
Earliest failing kernel version: 2.6.24
Distribution: gentoo
Hardware Environment: opteron
Software Environment: x86_64
Problem Description:

With 2.6.24 and 25 there are troubles with qla2xxx module. 4G FC
arrays (Infortrend) are not working properly, while 2G FC are OK. 

Detecting 4G array gives:
 sd 8:0:0:0: [sdc] Very big device. Trying to use READ CAPACITY(16).
 sd 8:0:0:0: [sdc] 44918798336 512-byte hardware sectors (22998425 MB)
 sd 8:0:0:0: [sdc] Write Protect is off
 sd 8:0:0:0: [sdc] Mode Sense: 8f 00 00 08
 sd 8:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support
DPO or FUA
 sd 8:0:0:0: [sdc] Very big device. Trying to use READ CAPACITY(16).
 sd 8:0:0:0: [sdc] 44918798336 512-byte hardware sectors (22998425 MB)
 sd 8:0:0:0: [sdc] Write Protect is off
 sd 8:0:0:0: [sdc] Mode Sense: 8f 00 00 08
 sd 8:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support
DPO or FUA
 sdc: sdc1
 sd 8:0:0:0: [sdc] Attached SCSI disk

and later on, generated by vgscan:

 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 0
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 44918798208
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 44918798320
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 0
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 8
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 0
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 44918798114
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 44918798282
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 34
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 42
 sd 8:0:0:0: [sdc] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK,SUGGEST_OK
 end_request: I/O error, dev sdc, sector 34


2.6.23 (gentoo-sources) works fine. I am not sure whether this is a regression
in the driver or something else. The controller is
QLogic QLE220 - PCI-Express to 4Gb FC, Single Channel
ISP5432: PCIe (2.5Gb/s x4)
and firmware version is 4.02.02 (from sys-block/qla-fc-firmware-20071207)
On qlogic site there is a newer firmware (4.03.02), although I doubt the
firmware would be the cause of the problems.

To be honest, I have not checked 2.6.25 release but rather rc8, however there
are no qla2xxx related patches since then.


Steps to reproduce: boot 2.6.24 or 25, run vgscan


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