Re: [PATCH 3/7] scsi_dh: add hp sw device handler - testing and hit existing oops in radix_tree_gang_lookup (fix upstream)

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On Mon, 2008-03-10 at 18:33 -0700, Chandra Seetharaman wrote:
> Subject: scsi_dh: add hp sw device handler
> 
> From: Mike Christie <michaelc@xxxxxxxxxxx>
> 
> This patch adds a very basic scsi device handler for older hp boxes which
> cannot be upgraded.
> 
> Signed-off-by: Mike Christie <michaelc@xxxxxxxxxxx>
> Signed-off-by: Chandra Seetharaman <sekharan@xxxxxxxxxx>
> ---
> 
>  

FYI, I am testing the hp portion and hit and existing oops in
radix_tree_gang_lookup (fixed by upstream block layer patch):
http://www.gossamer-threads.com/lists/linux/kernel/880705?page=last

I saw the problem when doing this sequence:
1) multipath -F
2) "rmmod qla2xxx"
* This would trigger the oops

I added the following upstream commit
ffc4e7595734cf768fa60cea8a4d545dfef8231a on top of your patches and it
seems to have fixed the problem:
http://tinyurl.com/2bk392

My full patch series (started with 2.6.25-rc2):
# quilt series
patches/2.6.25-rc2-mm1.bz2
patches/scsi_dh-add-skeleton.patch
patches/scsi_dh-add-lsi-rdac.patch
patches/scsi_dh-add-hp-sw.patch
patches/scsi_dh-add-emc.patch
patches/scsi_dh-use-scsi-dh-in-dm-mpath.patch
patches/scsi_dh-remove-hwh-from-dm.patch
patches/scsi_dh-remove-hwh-infrastructure.patch
patches/linux-2.6.git-ffc4e7595734cf768fa60cea8a4d545dfef8231a.patch
#

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