Mike Christie <michaelc@xxxxxxxxxxx> wrote: > Grant Grundler wrote: >> On Tue, Sep 2, 2008 at 9:05 AM, Mike Anderson >> <andmike@xxxxxxxxxxxxxxxxxx> wrote: >>> From: Mike Christie <michaelc@xxxxxxxxxxx> >>> >>> Multipath is best at handling transport errors. If it gets a device >>> error then there is not much the multipath layer can do. It will just >>> access the same device but from a different path. >>> >>> This patch breaks up failfast into device, transport and driver errors. >> >> Is there any document that describes what those errors are for each >> class of transport? > > > > Not yet. For SCSI I was still trying to classify the host byte errors, > because drivers are using them differently. I had sent patches in the > thread here > http://marc.info/?l=linux-scsi&m=121918956332584&w=2 > that just start syncing up the transport errors for SCSI by adding some > new transport host byte errors and converting drivers and transport > classes to them. > I can work on a patch to the scsi_mid_low_api.txt document that describes the mapping / policy of these changes (i.e., DID_* / sense to SCSI_MLQUEUE_DIS_* mapping to blk_failfast_* mapping ). -andmike -- Michael Anderson andmike@xxxxxxxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
