From: James Bottomley <James.Bottomley@suse.de>
To: Lee Jones <lee.jones@canonical.com>
Cc: linux-scsi@vger.kernel.org
Subject: Re: Blank DVD is not detected / cannot burn
Date: Tue, 14 Sep 2010 07:18:44 -0500 [thread overview]
Message-ID: <1284466724.20409.8.camel@mulgrave.site> (raw)
In-Reply-To: <4C8F5C3E.80909@canonical.com>
On Tue, 2010-09-14 at 12:27 +0100, Lee Jones wrote:
> A bug as been reported me to where some DVD-RW drives are unable to
> detect blank DVDs. Apparently this is a regression issue, as the
> reporting user is insisting that they used to be able to burn DVDs
> using the same hardware.
>
> The reporting user provided this dmesg output. I believe they tried a
> few different disks to gain this response.
You neglected to say what kernel? I assume 2.6.35
> I am pasting dmesg output from these attempts:
> [ 3563.989601] sr 5:0:1:0: [sr0] Unhandled sense code
> [ 3563.989606] sr 5:0:1:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> [ 3563.989609] sr 5:0:1:0: [sr0] Sense Key : Medium Error [current]
> [ 3563.989614] sr 5:0:1:0: [sr0] ASC=0x10 <<vendor>> ASCQ=0x90
> [ 3563.989621] sr 5:0:1:0: [sr0] CDB: Read(10): 28 00 00 05 6f 60 00 00 02 00
> [ 3563.989629] end_request: I/O error, dev sr0, sector 1424768
> [ 3563.989633] quiet_error: 3 callbacks suppressed
> [ 3563.989636] Buffer I/O error on device sr0, logical block 178096
> [ 3607.084661] sr 5:0:1:0: [sr0] Device not ready
> [ 3607.084665] sr 5:0:1:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> [ 3607.084669] sr 5:0:1:0: [sr0] Sense Key : Not Ready [current]
> [ 3607.084673] sr 5:0:1:0: [sr0] Add. Sense: Medium not present
> [ 3607.084677] sr 5:0:1:0: [sr0] CDB: Read(10): 28 00 00 00 00 1e 00 00 02 00
> [ 3607.084685] end_request: I/O error, dev sr0, sector 120
> [ 3607.084690] Buffer I/O error on device sr0, logical block 15
> [ 3607.090021] sr 5:0:1:0: [sr0] Device not ready
> [ 3607.090023] sr 5:0:1:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
> [ 3607.090026] sr 5:0:1:0: [sr0] Sense Key : Not Ready [current]
> [ 3607.090029] sr 5:0:1:0: [sr0] Add. Sense: Medium not present
> [ 3607.090032] sr 5:0:1:0: [sr0] CDB: Read(10): 28 00 00 00 00 1e 00 00 02 00
> [ 3607.090039] end_request: I/O error, dev sr0, sector 120
So these are all direct pass throughs. That likely means the problem is
in the setup on the burner. If there's some filesystem above this,
there was a Read/Write flag error in blk_rq_map_kern ... but that was
introduced in 2.6.36-rc1.
The only recent changes to sr were the BLK pushdown and they were post
2.6.35.
James
next prev parent reply other threads:[~2010-09-14 12:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-14 11:27 Blank DVD is not detected / cannot burn Lee Jones
2010-09-14 12:18 ` James Bottomley [this message]
[not found] ` <4C8F6C2D.4070200@canonical.com>
2010-09-14 12:40 ` James Bottomley
2010-09-14 14:47 ` Lee Jones
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