From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 30062] New: Huge amounts of "HDIO_GET_IDENTITY failed for
/dev/sr0" messages during boot
Date: Mon, 28 Feb 2011 10:52:28 GMT
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https://bugzilla.kernel.org/show_bug.cgi?id=30062
Summary: Huge amounts of "HDIO_GET_IDENTITY failed for
/dev/sr0" messages during boot
Product: IO/Storage
Version: 2.5
Kernel Version: 2.6.38-rc6
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: blocking
Priority: P1
Component: SCSI
AssignedTo: linux-scsi@vger.kernel.org
ReportedBy: monoped@sudrala.de
Regression: Yes
My system (Crux 2.7) contains an older SCSI disk, and a SCSI CD writer
(Plextor). When booting into 2.6.38, I get an endless sequence of errors like
ata_id[xyz]: HDIO_GET_IDENTITY failed for '/dev/sr0'
The errors start when the command
udevadm trigger --type=devices --action=add
is executed. There are also about 50 udevd processes in the process list. The
system gets extremely slow, and the only way to make it usable again is by
saying 'killall udevd'. Apparently udev has an issue with the CD writer (while
it handles the harddisk correctly).
The same system works well with kernel 2.6.37.
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