Re: sata_mv port lockup on hotplug (kernel 2.6.38.2)

From: Tejun Heo
Date: Thu Sep 01 2011 - 21:13:19 EST


Hello,

On Mon, Aug 29, 2011 at 04:49:29PM +0100, Bruce Stenning wrote:
> I should mention that we are now working on kernel 2.6.39.4 (and are choosing
> not to go with 3.x to limit changes as we progress towards final testing.)

I don't think it would make any difference. The core EH hasn't
changed for some time now.

> [...]
> ata4: EH complete
> ata_scsi_error: EXIT
> __ata_port_freeze: ata4 port frozen
> ata_port_schedule_eh: port EH scheduled
> ata_scsiop_noop: ENTER
> ata_scsiop_read_cap: ENTER
> ata_scsiop_mode_sense: ENTER
> ata_scsiop_mode_sense: ENTER
> ata_scsiop_mode_sense: ENTER

That's weird. Another EH is scheduled after one completes but EH
doesn't kick in. Hmmm... can't see how that can happen. How easily
can you reproduce the problem?

Thanks.

--
tejun
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