From: Mark Lord <liml@rtr.ca>
To: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Mike <michael_six@users.sourceforge.net>,
B.Zolnierkiewicz@elka.pw.edu.pl,
list linux-ide <linux-ide@vger.kernel.org>
Subject: Re: Kernel 2.6.18 and above
Date: Sat, 21 Apr 2007 11:28:25 -0400 [thread overview]
Message-ID: <462A2D99.9090201@rtr.ca> (raw)
In-Reply-To: <200704202241.13223.bzolnier@gmail.com>
Bartlomiej Zolnierkiewicz wrote:
> On Friday 20 April 2007, Benjamin Herrenschmidt wrote:
>> I'm CC'ing linux-ide... looks like the disk which you say is 20GB is
>> misdetected by the IDE layer as being 2GB.
..
>> And here you can see that the partition map tries to use about 20GB...
>> so there is a discrepancy between what the partition map says and what
>> the IDE driver says. I suspect old kernel just ignores the later, while
>> newer kernels enforce the limit which causes your problem.
>>
>> Bart, I'm a bit at lost as to why the device size would be misdetected,
>> do you have an idea ? Might be worth getting a dump of the ID block...
>> Mike, can you send us a dump of the binary file /proc/ide/hdb/identify ?
>
> Since this is a 2.6.17->2.6.18 regression narrowing the problem down to
> the specific changeset (or at least -git or even -rc) seems like a most
> promising way in discovering the source of the issue.
Oddly enough, the IDENTIFY data that was posted shows this:
CHS current addressable sectors: 4128768
LBA user addressable sectors: 40188960
So, using CHS it appears as a 2GB drive, but using LBA we get a 20GB drive.
Is something mistakenly using CHS instead of LBA ??
-ml
prev parent reply other threads:[~2007-04-21 15:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4626AEF7.9010804@users.sourceforge.net>
[not found] ` <1177022657.7286.3.camel@localhost.localdomain>
[not found] ` <462811D6.9000304@users.sourceforge.net>
[not found] ` <1177051098.17978.4.camel@localhost.localdomain>
[not found] ` <46286D36.5090609@users.sourceforge.net>
2007-04-20 8:30 ` Kernel 2.6.18 and above Benjamin Herrenschmidt
2007-04-20 9:55 ` Mike
2007-04-20 20:41 ` Bartlomiej Zolnierkiewicz
2007-04-21 0:15 ` Benjamin Herrenschmidt
2007-04-21 15:28 ` Mark Lord [this message]
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