[Bug 13143] New: scsi_debug doesn't manage more than 1Tb

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http://bugzilla.kernel.org/show_bug.cgi?id=13143

           Summary: scsi_debug doesn't manage more than 1Tb
           Product: SCSI Drivers
           Version: 2.5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: scsi_drivers-other@kernel-bugs.osdl.org
        ReportedBy: tvignaud@mandriva.com
        Regression: No


While debugging a partitionner software that has issues with disks bigger than
1Tb, I found out that scsi_debug doesn't manage more than 1Tb:

# modprobe scsi_debug virtual_gb=1000
# cat /proc/partitions |fgrep sdc
   8       32 1048576000 sdc
# rmmod scsi_debug
# modprobe scsi_debug virtual_gb=1100
# cat /proc/partitions |fgrep sdc
   8       32 9223372035860725760 sdc


dmesg shows that the additionnal 100Gb makes it loose sight:
sd 16:0:0:0: [sdc] 2097152000 512-byte hardware sectors: (1.07 TB/1000 GiB)
versus:
sd 15:0:0:0: [sdc] 18446744071721451520 512-byte hardware sectors: (18.4
EB/15.9 EiB)

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