scsi: Devices offlined

scsi: Devices offlined

[Wakko Warner]

[84797.683873] sr 1:0:13:0: scsi: Device offlined - not ready after error recovery

Is there anyway to make the kernel "online" a device that has done this? 
I've had this happen on various devices (mostly on usb where I can
unplug/replug), but this time, it's on a scsi controller and the driver is
not a module.

If it's possible to do this w/o rebooting, I'd like to know for when I have
this happen in the future.

If it matters, the driver is aic79xx, kernel 2.6.20.

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Re: scsi: Devices offlined

[Philippe Troin]

Wakko Warner <wakko@animx.eu.org> writes:

> [84797.683873] sr 1:0:13:0: scsi: Device offlined - not ready after error recovery
> 
> Is there anyway to make the kernel "online" a device that has done this? 
> I've had this happen on various devices (mostly on usb where I can
> unplug/replug), but this time, it's on a scsi controller and the driver is
> not a module.
> 
> If it's possible to do this w/o rebooting, I'd like to know for when I have
> this happen in the future.

Have you tried:

  echo remove-single-device BUS ID LUN > /proc/scsi
  echo add-single-device BUS ID LUN > /proc/scsi

?

Phil.

Re: scsi: Devices offlined

[Wakko Warner]

Philippe Troin wrote:
> Wakko Warner <wakko@animx.eu.org> writes:
> 
> > [84797.683873] sr 1:0:13:0: scsi: Device offlined - not ready after error recovery
> > 
> > Is there anyway to make the kernel "online" a device that has done this? 
> > I've had this happen on various devices (mostly on usb where I can
> > unplug/replug), but this time, it's on a scsi controller and the driver is
> > not a module.
> > 
> > If it's possible to do this w/o rebooting, I'd like to know for when I have
> > this happen in the future.
> 
> Have you tried:
> 
>   echo remove-single-device BUS ID LUN > /proc/scsi
>   echo add-single-device BUS ID LUN > /proc/scsi

I tried:
echo "scsi remove-scingle-device 1 0 13 0" > /proc/scsi/scsi
<device removed from /proc/scsi/scsi list>
echo "scsi add-scingle-device 1 0 13 0" > /proc/scsi/scsi
<device does not show up in /proc/scsi/scsi list>

I also tried your method, which just gives invalid argument (using
/proc/scsi/scsi, since /proc/scsi is a directory)

According to scsi_proc.c:
        /*
         * Usage: echo "scsi add-single-device 0 1 2 3" >/proc/scsi/scsi
         * with  "0 1 2 3" replaced by your "Host Channel Id Lun".
         */

        /*
         * Usage: echo "scsi remove-single-device 0 1 2 3" >/proc/scsi/scsi
         * with  "0 1 2 3" replaced by your "Host Channel Id Lun".
         */

Either way, nothing.

Er, on second though, I actually unplugged the power from the scsi device
and replugged it and it shows up now.  Oh well..  Thanks anyway =)

-- 
 Lab tests show that use of micro$oft causes cancer in lab animals
 Got Gas???