From: Albert Lee <albertcc@tw.ibm.com>
To: YUP <yupadmin@gmail.com>
Cc: albertl@mail.com, Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
linux-ide@vger.kernel.org,
Sergei Shtylyov <sshtylyov@ru.mvista.com>,
Jeff Garzik <jeff@garzik.org>
Subject: Re: libata: CD and dvd devices not recognized
Date: Thu, 22 Mar 2007 14:06:18 +0800 [thread overview]
Message-ID: <46021CDA.3070807@tw.ibm.com> (raw)
In-Reply-To: <4600F45C.3000303@gmail.com>
Hi Yarema,
Thanks for the detailed log.
It looks like the bad INQUIRY command
"CDB (4:0,1,0) 12 01 00 00 fe 00 00 00 00" (INQUIRY, length=254, EVPD=1)
is coming from the user space, not the SCSI mid-layer.
I guess two problems together caused this bug:
1. Ubuntu Linux issues an incorrect INQUIRY command to the drive.
(Other distros seem to have the INQUIRY correct.)
2. The incorrect INQUIRY happens to cause the AOpen drive frozen.
(The HP drive is immune from the incorrect INQUIRY command.
"check condition" is returned for the bad INQUIRY.)
We have two possible solutions here:
a. Patch Ubuntu, such that the incorrect INQUIRY is fixed.
b. Patch kernel, such that the AOpen drives are blacklisted.
Each INQUIRY is inspected for the blacklisted drives.
If the INQUIRY looks wrong, the INQUIRY is rejected.
I guess a. is the preferred solution...
--
albert
next prev parent reply other threads:[~2007-03-22 6:06 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-14 22:14 libata: CD and dvd devices not recognized YUP
2007-03-15 3:56 ` Albert Lee
2007-03-15 13:11 ` YUP
2007-03-15 17:32 ` Albert Lee
2007-03-16 10:16 ` YUP
2007-03-16 15:06 ` Albert Lee
2007-03-16 15:50 ` YUP
2007-03-17 13:29 ` Bartlomiej Zolnierkiewicz
2007-03-17 14:39 ` Albert Lee
2007-03-17 15:00 ` Bartlomiej Zolnierkiewicz
2007-03-17 18:38 ` YUP
2007-03-17 18:47 ` YUP
2007-03-17 19:12 ` Bartlomiej Zolnierkiewicz
2007-03-17 19:22 ` YUP
2007-03-17 20:07 ` Bartlomiej Zolnierkiewicz
2007-03-18 10:07 ` YUP
2007-03-18 15:10 ` Bartlomiej Zolnierkiewicz
2007-03-18 15:22 ` YUP
2007-03-18 15:54 ` Bartlomiej Zolnierkiewicz
2007-03-18 15:49 ` YUP
2007-03-18 22:48 ` YUP
2007-03-19 3:31 ` Albert Lee
2007-03-19 8:22 ` YUP
2007-03-19 8:29 ` Albert Lee
2007-03-19 12:10 ` Sergei Shtylyov
2007-03-19 19:35 ` YUP
2007-03-20 7:27 ` Albert Lee
2007-03-20 9:07 ` Albert Lee
2007-03-21 4:52 ` Albert Lee
2007-03-21 9:01 ` YUP
2007-03-22 6:06 ` Albert Lee [this message]
2007-03-22 7:09 ` Tejun Heo
2007-03-22 12:37 ` Alan Cox
2007-03-23 3:40 ` Albert Lee
2007-03-23 15:19 ` Douglas Gilbert
2007-03-26 5:50 ` Albert Lee
2007-03-22 14:50 ` Sergei Shtylyov
2007-03-23 3:21 ` Albert Lee
2007-03-19 23:02 ` YUP
2007-03-20 15:23 ` Sergei Shtylyov
2007-03-23 22:13 ` Bartlomiej Zolnierkiewicz
2007-03-26 5:53 ` Albert Lee
2007-03-18 6:42 ` YUP
2007-03-16 22:37 ` YUP
2007-03-17 3:24 ` Albert Lee
2007-03-17 9:09 ` YUP
2007-03-17 10:51 ` Albert Lee
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=46021CDA.3070807@tw.ibm.com \
--to=albertcc@tw.ibm.com \
--cc=albertl@mail.com \
--cc=bzolnier@gmail.com \
--cc=jeff@garzik.org \
--cc=linux-ide@vger.kernel.org \
--cc=sshtylyov@ru.mvista.com \
--cc=yupadmin@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).