[PATCH] IBM Power RAID driver - third version

[PATCH] IBM Power RAID driver - third version

[Brian King]

I have uploaded the third version of the ipr device driver to:

http://www-124.ibm.com/storageio/ipr/patch-2.6.3-ipr-2.0.0-6.gz

Major changes:

1. Removed use of bit fields.
2. Removed show_queue_depth since we can use default one.
3. Added FIXME comments to issues still outstanding that
    require midlayer changes
4. Several bug fixes.

Outstanding issues:

1. Driver needs the start_unit patch I submitted in order to function
    properly. This has still not been accepted. A 2.6.3 patch can be
    found at: http://www-124.ibm.com/storageio/ipr/patch-2.6.3-start_unit.gz
2. Driver needs the array_controller patch, which still has not been
    accepted. http://www-124.ibm.com/storageio/ipr/patch-2.6.3-array_controller.gz
3. Still checking allow_cmds flag in queuecommand. ERP ops (e.g. TUR),
    still do not check host_blocked. Patch to force retries to obey
    host_blocked flag has been accepted, will be submitting another
    patch to fix ERP ops. Once this is accepted, I will remove the check.
4. ioa_is_dead flag still exists and is checked in queuecommand. Need to
    add a scsi_set_host_offline interface to change this.
5. res->del_from_ml flag still exists. To remove it requires a
    scsi_set_device_offline interface.
6. Driver is still modifying the command timeout. Once an acceptable
    alternative is agreed upon, this can be cleaned up.

Please apply. I will continue working the outstanding issues and
update the ipr driver along with the rest of the patch.


-- 
Brian King
eServer Storage I/O
IBM Linux Technology Center

Re: [PATCH] IBM Power RAID driver - third version

[Brian King]

There was a bug in this version causing system hangs on certain
machines as I was doing memory space accesses with memory space
disabled, please use
http://www-124.ibm.com/storageio/ipr/patch-2.6.3-ipr-2.0.0-7.gz
instead.

Also, you will need:
http://www-124.ibm.com/storageio/ipr/patch-2.6.3-ipr-pci-ids
as well.

Thanks

-Brian


Brian King wrote:
> I have uploaded the third version of the ipr device driver to:
> 
> http://www-124.ibm.com/storageio/ipr/patch-2.6.3-ipr-2.0.0-6.gz
> 
> Major changes:
> 
> 1. Removed use of bit fields.
> 2. Removed show_queue_depth since we can use default one.
> 3. Added FIXME comments to issues still outstanding that
>    require midlayer changes
> 4. Several bug fixes.
> 
> Outstanding issues:
> 
> 1. Driver needs the start_unit patch I submitted in order to function
>    properly. This has still not been accepted. A 2.6.3 patch can be
>    found at: http://www-124.ibm.com/storageio/ipr/patch-2.6.3-start_unit.gz
> 2. Driver needs the array_controller patch, which still has not been
>    accepted. 
> http://www-124.ibm.com/storageio/ipr/patch-2.6.3-array_controller.gz
> 3. Still checking allow_cmds flag in queuecommand. ERP ops (e.g. TUR),
>    still do not check host_blocked. Patch to force retries to obey
>    host_blocked flag has been accepted, will be submitting another
>    patch to fix ERP ops. Once this is accepted, I will remove the check.
> 4. ioa_is_dead flag still exists and is checked in queuecommand. Need to
>    add a scsi_set_host_offline interface to change this.
> 5. res->del_from_ml flag still exists. To remove it requires a
>    scsi_set_device_offline interface.
> 6. Driver is still modifying the command timeout. Once an acceptable
>    alternative is agreed upon, this can be cleaned up.
> 
> Please apply. I will continue working the outstanding issues and
> update the ipr driver along with the rest of the patch.
> 
> 


-- 
Brian King
eServer Storage I/O
IBM Linux Technology Center