Ok, thanks. I guessed the entries would be like that but was 100% sure.
These things are details which are not known to everybody and only some
people can guess what to do or to add to scsi.c; there were much
messages dealing with similar problems, so I wanted you to post an
explanation.
Greetings, Dietmar
Chiaki Ishikawa wrote:
>
> X-PMC-CI-e-mail-id: 10398
>
> >>>>> "Dietmar" == Dietmar Stein <[EMAIL PROTECTED]> writes:
>
> Dietmar> Who was the one got the idea with the scsi.c-file? Did he posted his
> Dietmar> message only to Charles or also to linux-scsi? What has he done exactly?
> Dietmar> Would be very nice and may help a lot of people, if answers again.
>
> It was me who sent a personal e-mail.
>
> By the time I reply with this message, someone might have
> explained what to do in detail, but here it goes anyway.
>
> Some SCSI devices have firmware problems and behave erratically
> when it is probed for non-existing non-zero LUN (>0).
>
> If you look at drivers/scsi/scsi.c, there is a chunk of lines that
> blacklists such devices so that the non-zero LUN probe is not done
> against such devices. (below is from 2.1.1xx source tree. 2.0.3x
> should have similar lines, but the data structure may have a different
> name.)
>
> Anyway, if you look at these entries ad the comment, you wil find that
> many SCSI devices (possibly older ones) may behave erratically if it
> is probed for non-zero (i.e. >0) LUN.
>
> I added a few lines of my own (between CI addition comment lines) and
> a few more. You can produce a diff against your own copy and see what
> actually have been added.
>
> BLIST_NONLUN means that there is only one LUN at the target (LUN 0),
> and no probe should be done.
> BLIST_SINGLELUN is, if I understand correctly, to produce only
> pending requests for against a LUN at a time or something to that
> effect.
> I think this is to reduce the shuffling of CDs in a changer device,
> but I am not sure.
> BLIST_FORCELUN is, if I recall correctly, is to force the probe
> of LUN anyway.
>
> You can read the earlier sections of the scsi.c file to
> figure out what these macros mean.
>
> Now the entry of this device_list is the one shown at boot time when
> these devices are scanned.
> VendorID, Product name, Revision, and the flags.
> If I recall correctly, Revision part is ignored, but
> may change in the future.
>
> ========================================
>
> /*
> * This is what was previously known as the blacklist. The concept
> * has been expanded so that we can specify other types of things we
> * need to be aware of.
> */
> static struct dev_info device_list[] =
> {
> {"TEAC","CD-R55S","1.0H", BLIST_NOLUN}, /* Locks up if polled for lun != 0 */
> {"CHINON","CD-ROM CDS-431","H42", BLIST_NOLUN}, /* Locks up if polled for lun != 0 */
> {"CHINON","CD-ROM CDS-535","Q14", BLIST_NOLUN}, /* Locks up if polled for lun != 0 */
> {"DENON","DRD-25X","V", BLIST_NOLUN}, /* Locks up if probed for lun != 0 */
> {"HITACHI","DK312C","CM81", BLIST_NOLUN}, /* Responds to all lun - dtg */
> {"HITACHI","DK314C","CR21" , BLIST_NOLUN}, /* responds to all lun */
> {"IMS", "CDD521/10","2.06", BLIST_NOLUN}, /* Locks-up when LUN>0 polled. */
> {"MAXTOR","XT-3280","PR02", BLIST_NOLUN}, /* Locks-up when LUN>0 polled. */
> {"MAXTOR","XT-4380S","B3C", BLIST_NOLUN}, /* Locks-up when LUN>0 polled. */
> {"MAXTOR","MXT-1240S","I1.2", BLIST_NOLUN}, /* Locks up when LUN>0 polled */
> {"MAXTOR","XT-4170S","B5A", BLIST_NOLUN}, /* Locks-up sometimes when LUN>0
>polled. */
> {"MAXTOR","XT-8760S","B7B", BLIST_NOLUN}, /* guess what? */
> {"MEDIAVIS","RENO CD-ROMX2A","2.03",BLIST_NOLUN},/*Responds to all lun */
> {"MICROP", "4110", "*", BLIST_NOTQ}, /* Buggy Tagged Queuing */
> {"NEC","CD-ROM DRIVE:841","1.0", BLIST_NOLUN}, /* Locks-up when LUN>0 polled. */
> {"RODIME","RO3000S","2.33", BLIST_NOLUN}, /* Locks up if polled for lun != 0 */
> {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN}, /* causes failed REQUEST SENSE on
>lun 1
> * for aha152x controller, which
>causes
> * SCSI code to reset bus.*/
> {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN}, /* causes failed REQUEST SENSE on
>lun 1
> * for aha152x controller, which
>causes
> * SCSI code to reset bus.*/
> {"SEAGATE", "ST296","921", BLIST_NOLUN}, /* Responds to all lun */
> {"SEAGATE","ST1581","6538",BLIST_NOLUN}, /* Responds to all lun */
> {"SONY","CD-ROM CDU-541","4.3d", BLIST_NOLUN},
> {"SONY","CD-ROM CDU-55S","1.0i", BLIST_NOLUN},
> {"SONY","CD-ROM CDU-561","1.7x", BLIST_NOLUN},
> {"TANDBERG","TDC 3600","U07", BLIST_NOLUN}, /* Locks up if polled for lun != 0 */
> {"TEAC","CD-ROM","1.06", BLIST_NOLUN}, /* causes failed REQUEST SENSE on
>lun 1
> * for seagate controller, which
>causes
> * SCSI code to reset bus.*/
> {"TEXEL","CD-ROM","1.06", BLIST_NOLUN}, /* causes failed REQUEST SENSE on
>lun 1
> * for seagate controller, which
>causes
> * SCSI code to reset bus.*/
> {"QUANTUM","LPS525S","3110", BLIST_NOLUN}, /* Locks sometimes if polled for lun
>!= 0 */
> {"QUANTUM","PD1225S","3110", BLIST_NOLUN}, /* Locks sometimes if polled for lun
>!= 0 */
>
> /* CI addition */
>
> {"QUANTUM", "EMPIRE_1080S", "1100", BLIST_NOLUN}, /* Locks sometimes if
>polled for lun != 0 */
> {"QUANTUM", "LIGHTNING 730S", "241E", BLIST_NOLUN}, /* Not sure. Just for
>safety. */
> {"IBM", "DALS-3540", "S60E", BLIST_NOLUN}, /* Not sure. Just for
>safety. */
>
> /* CI addition ends */
>
> {"MEDIAVIS","CDR-H93MV","1.31", BLIST_NOLUN}, /* Locks up if polled for lun != 0 */
> {"SANKYO", "CP525","6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra
>reset */
> {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */
> {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */
> {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */
>
> /*
> * Other types of devices that have special flags.
> */
> {"SONY","CD-ROM CDU-8001","*", BLIST_BORKEN},
> {"TEXEL","CD-ROM","1.06", BLIST_BORKEN},
> {"IOMEGA","Io20S *F","*", BLIST_KEY},
> {"INSITE","Floptical F*8I","*", BLIST_KEY},
> {"INSITE","I325VM","*", BLIST_KEY},
> {"NRC", "MBR-7", "*", BLIST_FORCELUN | BLIST_SINGLELUN},
> {"NRC", "MBR-7.4", "*", BLIST_FORCELUN | BLIST_SINGLELUN},
>
> {"NRC", "MBR-7", "110", BLIST_FORCELUN | BLIST_SINGLELUN},
> {"REGAL","CDC-4X","*", BLIST_MAX5LUN | BLIST_SINGLELUN},
>
> {"NAKAMICH","MJ-4.8S","*", BLIST_FORCELUN | BLIST_SINGLELUN},
> {"NAKAMICH","MJ-5.16S","*", BLIST_FORCELUN | BLIST_SINGLELUN},
> {"PIONEER","CD-ROM DRM-600","*", BLIST_FORCELUN | BLIST_SINGLELUN},
> {"PIONEER","CD-ROM DRM-602X","*", BLIST_FORCELUN | BLIST_SINGLELUN},
> {"PIONEER","CD-ROM DRM-604X","*", BLIST_FORCELUN | BLIST_SINGLELUN},
> {"EMULEX","MD21/S2 ESDI","*", BLIST_SINGLELUN},
> {"CANON","IPUBJD","*", BLIST_SPARSELUN},
>
> {"MATSHITA","PD","*", BLIST_FORCELUN | BLIST_SINGLELUN},
>
> /* do we need BLIS_KEY for this? */
> {"MATSHITA","PD-1 LF-1000","A111", BLIST_FORCELUN | BLIST_SINGLELUN | BLIST_KEY}, /*
> added... */
>
> {"YAMAHA","CDR100","1.00", BLIST_NOLUN}, /* Locks up if polled for lun != 0 */
> {"YAMAHA","CDR102","1.00", BLIST_NOLUN}, /* Locks up if polled for lun != 0 */
> {"nCipher","Fastness Crypto","*", BLIST_FORCELUN},
> /*
> * Must be at end of list...
> */
> {NULL, NULL, NULL}
> };
>
> --
> Ishikawa, Chiaki [EMAIL PROTECTED] or
> (family name, given name) [EMAIL PROTECTED]
> Personal Media Corp. ** Remove .NoSpam at the end before use **
> Shinagawa, Tokyo, Japan 142-0051
>
> -
> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> the body of a message to [EMAIL PROTECTED]
--
"Don't fear the Gates" (a little like Blue Oyster Cult)
Dietmar Stein, Systemadministrator UNIX/Linux
[EMAIL PROTECTED], [EMAIL PROTECTED]
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