On Tue, 19 Dec 2017 13:32:48 -0500 Cathy Avery <cavery@xxxxxxxxxx> wrote: > When an I/O is returned with an srb_status of SRB_STATUS_INVALID_LUN > which has zero good_bytes it must be assigned an error. Otherwise > the I/O will be continuously requeued and will cause a deadlock in the > case where disks are being hot added and removed. sd_probe_async will > wait forever for its I/O to complete while holding scsi_sd_probe_domain. > > Also returning the default error of DID_TARGET_FAILURE causes > multipath to not retry the I/O resulting in applications receiving I/O > errors before a failover can occur. > > Signed-off-by: Cathy Avery <cavery@xxxxxxxxxx> > Signed-off-by: Long Li <longli@xxxxxxxxxxxxx> When working on the DVD probe issue I saw that error handling was problematic. Thanks for fixing. Reviewed-by: Stephen Hemminger <stephen@xxxxxxxxxxxxxxxxxx>
