Re: [PATCH 2/2] Drivers: scsi: storvsc: Force discovery of LUNs that may have been removed.

Christoph Hellwig
2014-08-19T17:54:31Z

On Sat, Aug 16, 2014 at 08:09:48PM -0700, K. Y. Srinivasan wrote:
> The host asks the guest to scan when a LUN is removed or added.
> The only way a guest can identify the removed LUN is when an I/O is
> attempted on a removed LUN - the SRB status code indicates that the LUN
> is invalid. We currently handle this SRB status and remove the device.
>
> Rather than waiting for an I/O to remove the device, force the discovery of
> LUNs that may have been removed prior to discovering LUNs that may have
> been added.

This looks pretty reasonable to me, but I wonder if we should move this
up to common code so that it happens for any host rescan triggered by
sysfs or other drivers as well.