From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 15566] New: SCSI Generic queueing info result never indicates
direct data transfer?
Date: Wed, 17 Mar 2010 22:39:30 GMT
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http://bugzilla.kernel.org/show_bug.cgi?id=15566
Summary: SCSI Generic queueing info result never indicates
direct data transfer?
Product: IO/Storage
Version: 2.5
Kernel Version: 2.6.18-2.6.32
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: SCSI
AssignedTo: linux-scsi@vger.kernel.org
ReportedBy: mh-linux-kernel@loup.net
Regression: No
The sg info result never returns a nonzero result despite
SG_FLAG_DIRECT_IO flag and aligned READ_10 and WRITE_10 data buffer.
Is direct io occuring as requested? If not, why not? If so, why
doesn't the info value behave as documented in the HOWTO?
I've run both over usb (which I can understand why not direct) and
to SATA drives that normally work fine with O_DIRECT read/write.
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