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    SubjectRE: 2.6.23.1 - sata_mv (7042) hang with large file operations
    Date
    From
    Additional information - the ~file size this is caused 
    is somewhere close to 260Mbytesfiles.

    If I create a ~260Mbytes file - my program finishes creating
    the file - but ~5 seconds later (I timed this by hitting enter
    on the console every second after completion of the command
    that should have done a fsync of the created file before exiting)...
    It hangs...

    I did a little playing around with /proc/sys/dev/scsi/logging_level
    (set to 0x7) - and it seems that the kernel/box locks up after
    this line:

    >> scsi_add_timer: scmd: efca83c0, time: 7500, (c0160660)
    >> scsi_delete_timer: scmd: efca83c0, rtn: 1
    >> scsi_add_timer: scmd: efca8840, time: 7500, (c0160660)


    Further analysis (setting logging level to 65535 (0xFFFF)
    Has the following behavior down low) -

    >> scsi_add_timer: scmd: efca8960, time: 7500, (c0160660)
    >> sd 0:0:0:0: [sda] Send: 0xefca8960
    >> sd 0:0:0:0: [sda] CDB: Write(10): 2a 00 00 47 92 27 00 01 48 00
    >> buffer = 0xc0553040, bufflen = 167936, done = 0xc016b194,
    queuecommand
    0xc017ed34
    >> leaving scsi_dispatch_cmnd()
    >> scsi_delete_timer: scmd: efca8960, rtn: 1
    >> sd 0:0:0:0: [sda] Done: 0xefca8960 SUCCESS
    >> sd 0:0:0:0: [sda] Result: hostbyte=DID_OK
    driverbyte=DRIVER_OK,SUGGEST_OK
    >> sd 0:0:0:0: [sda] CDB: Write(10): 2a 00 00 47 92 27 00 01 48 00
    >> sd 0:0:0:0: [sda] scsi host busy 1 failed 0
    >> sd 0:0:0:0: Notifying upper driver of completion (result 0)
    >>
    >> scsi_add_timer: scmd: efca82a0, time: 7500, (c0160660)
    >> sd 0:0:0:0: [sda] Send: 0xefca82a0
    >> sd 0:0:0:0: [sda] CDB: Write(10): 2a 00 00 47 93 6f 00 02 40 00
    >> buffer = 0xef5734c0, bufflen = 294912, done = 0xc016b194,
    queuecommand
    0xc017ed34
    >> leaving scsi_dispatch_cmnd()

    Nothing more - it hangs!

    This is really a nasty problem!!!!


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