On 02/01/2013 04:50 PM, Jack Wang wrote: > Hi All, > In our product system, we have several sata disks attached to one > machine. So when one of the disk fails, the jbd2(yes, we use ext4) > will hang forever and we will get something in /var/log/messages like below. > It seems to me that the io sent to the scsi layer is never returned > back with -EIO which is a little bit surprised for me(It should be a > timeout somewhere, right?). We have tried echo "offline" > > /sys/block/sdl/device/state, but it doesn't work. So is there any way > for us to let the scsi device returns all the io requests back with > EIO so that all the end_io can be called accordingly? Am I missing something here? > > Thanks, > Tao > [Jack Wang] > Hi Tao, > > Have you tried: > echo 1 > /sys/block/sdv/device/delete It will do some IO first so it will hang doing IO. > echo "- - -" > /sys/class/scsi_host/host What do you mean for this line? [Jack Wang] Sorry I mean to let the driver rescan to get the disk back. The line should be : echo "- - -" > /sys/class/scsi_host/hostx/scan. Per above delete does not work , so no need to run this. > > another way is : > find out which phy the disk attached to and: > echo 1 > /sys/class/sas_phy/phy-x:x:x/link_reset sorry, I have done it, but there is no response. [Jack Wang] What about echo 1 > /sys/class/sas_phy/phy-x:x:x/hard_reset ? Thanks, Tao > > Jack > > -- > To unsubscribe from this list: send the line "unsubscribe > linux-kernel" in the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- 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 -- 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
