On 02/01/2013 05:24 PM, Jack Wang wrote: > > 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 sorry, no response either.
Thanks, Tao > > ? > Thanks, > Tao >> >> Jack >> >> -- >> To unsubscribe from this list: send the line "unsubscribe >> linux-kernel" in the body of a message to majord...@vger.kernel.org >> 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 majord...@vger.kernel.org More majordomo info at > http://vger.kernel.org/majordomo-info.html > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majord...@vger.kernel.org > 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-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
