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  1. 15 4月, 2006 3 次提交
    • K
      [SCSI] BLIST_ATTACH_PQ3 flags · 13f7e5ac
      由 Kurt Garloff 提交于 
      Some devices report a peripheral qualifier of 3 for LUN 0; with the original
code, we would still try a REPORT_LUNS scan (if SCSI level is >= 3 or if we
have the BLIST_REPORTLUNS2 passed in), but NOT any sequential scan.
Also, the device at LUN 0 (which is not connected according to the PQ) is not
registered with the OS.

Unfortunately, SANs exist that are SCSI-2 and do NOT support REPORT_LUNS, but
report a unknown device with PQ 3 on LUN 0. We still need to scan them, and
most probably we even need BLIST_SPARSELUN (and BLIST_LARGELUN). See the bug
reference for an infamous example.

This is patch 3/3:
3. Implement the blacklist flag BLIST_ATTACH_PQ3 that makes the scsi
   scanning code register PQ3 devices and continues scanning; only sg
   will attach thanks to scsi_bus_match().
Signed-off-by: NKurt Garloff <garloff@suse.de>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      13f7e5ac
    • K
      [SCSI] Better log messages for PQ3 devs · 6c7154c9
      由 Kurt Garloff 提交于 
      Some devices report a peripheral qualifier of 3 for LUN 0; with the original
code, we would still try a REPORT_LUNS scan (if SCSI level is >= 3 or if we
have the BLIST_REPORTLUNS2 passed in), but NOT any sequential scan.
Also, the device at LUN 0 (which is not connected according to the PQ) is not
registered with the OS.

Unfortunately, SANs exist that are SCSI-2 and do NOT support REPORT_LUNS, but
report a unknown device with PQ 3 on LUN 0. We still need to scan them, and
most probably we even need BLIST_SPARSELUN (and BLIST_LARGELUN). See the bug
reference for an infamous example.

This patch 2/3:
If a PQ3 device is found, log a message that describes the device
(INQUIRY DATA and C:B:T:U tuple) and make a suggestion for blacklisting
it.
Signed-off-by: NKurt Garloff <garloff@suse.de>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      6c7154c9
    • K
      [SCSI] Try LUN 1 and use bflags · 4186ab19
      由 Kurt Garloff 提交于 
      Some devices report a peripheral qualifier of 3 for LUN 0; with the original
code, we would still try a REPORT_LUNS scan (if SCSI level is >= 3 or if we
have the BLIST_REPORTLUNS2 passed in), but NOT any sequential scan.
Also, the device at LUN 0 (which is not connected according to the PQ) is not
registered with the OS.

Unfortunately, SANs exist that are SCSI-2 and do NOT support REPORT_LUNS, but
report a unknown device with PQ 3 on LUN 0. We still need to scan them, and
most probably we even need BLIST_SPARSELUN (and BLIST_LARGELUN). See the bug
reference for an infamous example.

This is patch 1/3:
If we end up in sequential scan, at least try LUN 1 for devices
that reported a PQ of 3 for LUN 0.
Also return blacklist flags, even for PQ3 devices.
Signed-off-by: NKurt Garloff <garloff@suse.de>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>
      4186ab19
  3. 13 4月, 2006 19 次提交
  5. 12 4月, 2006 18 次提交