Re: [PATCH 00/11] First pass at merging Bart's HA work

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On 28 November 2012 03:34, Bart Van Assche <bvanassche@xxxxxxx> wrote:
> On 11/26/12 05:44, David Dillow wrote:
>>
>> Here is a first, UNTESTED, pass at preparing a merge of Bart's SRP HA
>> work to upstream. It is not complete, as I have not yet added the
>> transport layer error handling and related patches. It is also currently
>> missing the patch to maintain a single connection for an I_T nexus.
>>
>> I swapped Ishai's code to recreate QP/CQs for each connection, as that
>> adds recovery from fatal hardware errors, and reduces the code needed to
>> avoid stale completions. Similarly, Vu's patch slightly reduces reconnect
>> times.
>>
>> Target blocking/unblocking hasn't been added from Bart's patch that
>> removes the SRP_TARGET_CONNECTING state; I think it is probably the right
>> thing to do, but want to think it over a bit more.
>>
>> Similarly, I'm looking for a clean way to start the reconnection effort
>> as soon as we get an error through the CQ -- we know that any pending
>> commands are lost to us at that point, so we should be able to kick them
>> back upstream quickly. This should allow multipath to reissue them on one
>> of the remaining good paths.
>>
>> This series compiles, but is otherwise UNTESTED. I'll be working on that
>> over the next few days, with an eye on getting as much of Bart's work
>> into 3.8 as possible.
>
>
> Thanks Dave for doing all this work. A reworked and retested patch series
> that should address all comments that have been posted so far can be found
> here: http://github.com/bvanassche/linux/srp-ha. I can repost the entire
> patch series if you want. The changes compared to the previous time this
> patch series was posted are:
> * Integrated Ishai's and Vu's patches for recreating the QP and the CQs.
> * Took advantage of SCSI core changes that make scsi_remove_host() wait
>   until device removal and error handling finished (will post these
>   shortly).
>
> Bart.

This is grreat news, would be really good to see this merged for 3.8

Bart - I will test the new srp-ha branch in our environment.

>
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Joseph.

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