This is an existing configuration that broke with the VPD rescan
changes. The problem is that the error causes a rescan to be
initiated, which results in endless error messages.
On Fri, 2016-06-03 at 03:15 +0000, Tom Yan wrote:
> Why not get qemu have it fixed instead?
>
> On Tuesday, 31 May 2016, Johannes Thumshirn <jthumshirn@xxxxxxx>
> wrote:
> On Tue, May 31, 2016 at 09:42:29AM -0400, Ewan D. Milne wrote:
> > Linux fails to boot as a guest with a QEMU CD-ROM:
> >
> > [ 4.439488] ata2.00: ATAPI: QEMU CD-ROM, 0.8.2, max
> UDMA/100
> > [ 4.443649] ata2.00: configured for MWDMA2
> > [ 4.450267] scsi 1:0:0:0: CD-ROM QEMU QEMU
> CD-ROM 0.8. PQ: 0 ANSI: 5
> > [ 4.464317] ata2.00: exception Emask 0x0 SAct 0x0 SErr
> 0x0 action 0x6 frozen
> > [ 4.464319] ata2.00: BMDMA stat 0x5
> > [ 4.464339] ata2.00: cmd
> a0/01:00:00:00:01/00:00:00:00:00/a0 tag 0 dma 16640 in
> > [ 4.464339] Inquiry 12 01 00 00 ff 00res
> 48/20:02:00:24:00/00:00:00:00:00/a0 Emask 0x2 (HSM violation)
> > [ 4.464341] ata2.00: status: { DRDY DRQ }
> > [ 4.465864] ata2: soft resetting link
> > [ 4.625971] ata2.00: configured for MWDMA2
> > [ 4.628290] ata2: EH complete
> > [ 4.646670] ata2.00: exception Emask 0x0 SAct 0x0 SErr
> 0x0 action 0x6 frozen
> > [ 4.646671] ata2.00: BMDMA stat 0x5
> > [ 4.646683] ata2.00: cmd
> a0/01:00:00:00:01/00:00:00:00:00/a0 tag 0 dma 16640 in
> > [ 4.646683] Inquiry 12 01 00 00 ff 00res
> 48/20:02:00:24:00/00:00:00:00:00/a0 Emask 0x2 (HSM violation)
> > [ 4.646685] ata2.00: status: { DRDY DRQ }
> > [ 4.648193] ata2: soft resetting link
> >
> > ...
> >
> > Fix this by suppressing VPD inquiry for this device.
> >
> > Reported-by: Jan Stancek <jstancek@xxxxxxxxxx>
> > Tested-by: Jan Stancek <jstancek@xxxxxxxxxx>
> > Cc: <stable@xxxxxxxxxxxxxxx>
> > Signed-off-by: Ewan D. Milne <emilne@xxxxxxxxxx>
>
> Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx>
>
> --
> Johannes Thumshirn
> Storage
> jthumshirn@xxxxxxx +49 911
> 74053 689
> SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
> GF: Felix Imendörffer, Jane Smithard, Graham Norton
> HRB 21284 (AG Nürnberg)
> Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76
> 0850
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