Re: [PATCH] [SCSI] libsas panic when single phy disabled on a wide port

Jack Wang
2011-10-06T03:33:13Z

I reproduce this when echo 1/0 > /sys/class/sas_phy/phyxxx/enable phyxxx is
one in a wide port.
RE: [PATCH] [SCSI] libsas panic when single phy disabled on a wide port
>
> Our duplication is to send an out-of-band CLI command to a downstream
> expander's Firmware and tell it to disable one of it's phys. Sounds
> simple, but not when someone else has all the customized pieces and
> serial cables ;-/ and the duplicator has moved on in priority.
>
> Pregnant thought, smp_phy_control --phy=? --op=dis (wrong side, probably
> too 'wide' of an aim) has not been tried ...
>
> Sincerely -- Mark Salyzyn
>
> -----Original Message-----
> From: dan.j.williams@gmail.com [mailto:dan.j.williams@gmail.com] On
> Behalf Of Dan Williams
> Sent: Tuesday, October 04, 2011 7:31 PM
> To: Mark Salyzyn
> Subject: Re: [PATCH] [SCSI] libsas panic when single phy disabled on a
> wide port
>
> . . .
>
> What is your reproduction scenario for this bug? We see this in our
> larger topology hotplug tests, but I don't think we have a simple
> reproducer.
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