On Monday, January 08, 2007 3:25 PM, James Bottomley wrote: > Right, I sort of suspected something like this. BUSY/QUEUE_FULL > handling was a bit iffy in 2.4; but it was sorted out in the 2003/4 > timeframe. Nowadays, I think you want to translate the > MPI_SCSI_STATUS_BUSY directly to SAM_STAT_BUSY (i.e. just remove the > special casing if). >
I think your'e on the same page with the folks from VMware, where the've asked us to go back to our old driver code. Meaning we kill the check for "MPI_SCSI_STATUS_BUSY", instead the sam status is sent back "as is" without changing the DID_OK to DID_BUS_BUSY, etc. My problem with that is whether is breaks the Fibre Channel Folks. Will FC failover solution work properly if we go back to the old code? I add Stephen Shirron and Mike Reed. I don't know. Here is an explanation why that fix was needed back about a year ago: "When a target device responds with BUSY status, the MPT driver was sending DID_OK to the SCSI mid layer, which caused the IO to be retried indefinitely between the mid layer and the driver. By changing the driver return status to DID_BUS_BUSY, the target BUSY status can now flow through the mid layer to an upper layer Failover driver, which will manage the I/O timeout." - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
