Re: [RFC PATCH 0/9] tcmu: fix add/del failure handling

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Hi Nick and other reviewers.

Ignore this version of the patchset.

I have a new version that I will post in a couple of days when I am done
testing that incorporates Bart's comments and has bug fixes for my xcopy
patches.


On 06/12/2017 05:10 AM, Mike Christie wrote:
> Currently, tcmu does not get any response from userspace for
> device addition, removal and now reconfigure requests. This can
> result in partially created devices that initiators have access to
> and do not handle well.
> 
> The first patch is just some cleanups to the reconfigure code.
> 
> Patches 2 - 3, make the dev_index idr based, because tcmu needs a way
> for userspace to tell the kernel that it has executed a operation on
> a device.
> 
> Patches 4 makes add, del and reconfig sync so we can get info back from
> userspace before return succes/failure to LIO.
> 
> Patches 5 - 6 fix bugs in tcmu found during addition failure handling.
> 
> Patches 7 - 9 convert the xcopy code to use the idr helpers to loop
> over devices. I have not tested patches 7 - 9.
> 
> 
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