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| author | Kurt Garloff <garloff@suse.de> | 2006-04-03 15:20:08 +0200 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-04-14 13:56:56 -0500 |
| commit | 13f7e5acc8b329080672c13f05f252ace5b79825 (patch) | |
| tree | 917c208390543eb0f926850778bf0540486e7ba3 /drivers/scsi/scsi_scan.c | |
| parent | 6c7154c97e20c0ea28547240dc86731c0cee1b2f (diff) | |
| download | talos-obmc-linux-13f7e5acc8b329080672c13f05f252ace5b79825.tar.gz talos-obmc-linux-13f7e5acc8b329080672c13f05f252ace5b79825.zip | |
[SCSI] BLIST_ATTACH_PQ3 flags
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: Kurt Garloff <garloff@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 5603dc6eca47..7d31a4b0f802 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -900,7 +900,7 @@ static int scsi_probe_and_add_lun(struct scsi_target *starget, /* * result contains valid SCSI INQUIRY data. */ - if ((result[0] >> 5) == 3) { + if (((result[0] >> 5) == 3) && !(bflags & BLIST_ATTACH_PQ3)) { /* * For a Peripheral qualifier 3 (011b), the SCSI * spec says: The device server is not capable of |
