From: Mark Lord <liml@rtr.ca>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: IDE/ATA development list <linux-ide@vger.kernel.org>
Subject: Re: What's with libata and DVDs ?
Date: Sun, 07 Dec 2008 11:13:13 -0500 [thread overview]
Message-ID: <493BF619.7000003@rtr.ca> (raw)
In-Reply-To: <20081207112032.25089ac9@lxorguk.ukuu.org.uk>
Alan Cox wrote:
> On Sat, 06 Dec 2008 23:47:09 -0500
> Mark Lord <liml@rtr.ca> wrote:
>
>> Attempting to play a known-good DVD-video in MythTV-0.21
>> using libata in kernel 2.6.27.7 :
>>
>> sr 4:0:0:0: [sr0] unaligned transfer
>
> Your system somehow generated a scsi request which was not 2K aligned.
> The scsi mid layer then reported that and added padding - which
> presumably didn't help because the command shouldn't have been misaligned
> in the first place.
>
> If you strace it do you see any misaligned requests coming from user
> space - also btw is the cd layer reporting the sector size wrong
> anywhere ?
..
No complaints from the cd layer -- just that unaligned message.
I've changed that message to actually *show* the values it is complaining
about (what a concept, duh..), so next time I reproduce it there will be
some information as to what was really going on.
Probably just a buggy app, or maybe 64-bit porting error in it.
Cheers
prev parent reply other threads:[~2008-12-07 16:12 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-07 4:47 What's with libata and DVDs ? Mark Lord
2008-12-07 5:01 ` Mark Lord
2008-12-07 11:20 ` Alan Cox
2008-12-07 16:13 ` Mark Lord [this message]
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=493BF619.7000003@rtr.ca \
--to=liml@rtr.ca \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=linux-ide@vger.kernel.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.