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Re: [PATCH 00/20] LightNVM: pblk patches for 4.13

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> On 27 Jun 2017, at 00.29, Jens Axboe <axboe@kernel.dk> wrote:
> 
> On Mon, Jun 26 2017, Javier González wrote:
>> Hi Matias,
>> 
>> Here you have the pblk patchset for this window.
>> 
>> Apart from small fixes for LightNVM core and pblk, there are three
>> relevant changes:
>> 
>> - Metadata for each line is no longer issued on a separate workqueue,
>>   but instead, all I/Os are scheduled on the write thread. This allows
>>   to have more control over LUN collisions. The result is that we can
>>   use the full bandwidth of the device for user data. In the 4.12 pblk,
>>   we use ~25% of the bandwidth for metadata.
>> 
>> - The rate-limiter and GC have been tuned to keep the GC writer busy.
>>   Also, capacity per line is guaranteed for GC I/O as we reach
>>   capacity.
>> 
>> - We have now a FTL state machine. This allows to fail gracefully to
>>   user space in case of irrecoverable errors. This state machine will
>>   be the base for the pblk's FTL log.
>> 
>> The patches apply into your for-4.13/core. You can also find them in:
> 
> Nope, they do not. Patch #7 fails, because it's not on top of the
> bio_set changes that went in a week or two ago. I hand applied that one,
> didn't find issues with the rest.
> 
> But please remember to ensure that it applies on top of the current
> branch.

Thanks Jens. Won't happen again.

Javier

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[PATCH 00/20] LightNVM: pblk patches for 4.13 "Javier González" <jg@lightnvm.io> - 2017-06-26 12:00 +0200
  [PATCH 04/20] lightnvm: pblk: add debug stat for read cache hits "Javier González" <jg@lightnvm.io> - 2017-06-26 12:00 +0200
  [PATCH 02/20] lightnvm: propagate right error code to target "Javier González" <jg@lightnvm.io> - 2017-06-26 12:00 +0200
  [PATCH 14/20] lightnvm: pblk: choose optimal victim GC line "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 17/20] lightnvm: pblk: add lock assertions on helpers "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 15/20] lightnvm: pblk: set metadata list for all I/Os "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 01/20] lightnvm: re-convert ppa format on I/O failure "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 13/20] lightnvm: pblk: decouple bad block from line alloc "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 11/20] lightnvm: pblk: issue multiplane reads if possible "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 06/20] lightnvm: pblk: generalize erase path "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 19/20] lightnvm: pblk: set mempool and workqueue params. "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 16/20] lightnvm: pblk: cleanup unnecessary code "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 18/20] lightnvm: pblk: redesign GC algorithm "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 12/20] lightnvm: pblk: simplify meta. memory allocation "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  [PATCH 20/20] lightnvm: pblk: fail gracefully on irrec. error "Javier González" <jg@lightnvm.io> - 2017-06-26 12:10 +0200
  Re: [PATCH 00/20] LightNVM: pblk patches for 4.13 Jens Axboe <axboe@kernel.dk> - 2017-06-27 00:30 +0200
    Re: [PATCH 00/20] LightNVM: pblk patches for 4.13 Javier González <jg@lightnvm.io> - 2017-06-27 10:10 +0200

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