Re: [PATCH 0/1] RFC: Unreliable discard performance can cripple RAID1

From
Martin K. Petersen <hidden>
Date
2015-06-25 01:05:07
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"Jes" == Jes Sorensen [off-list ref] writes:
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Or is this some non-SATA/SCSI SSD that has a 'make_request_fn'
driver?  I think I came across one of those before (NVMe).  In that
case - the driver needs to be fixed.
Jes> Nope the block layer doesn't merge the requests at this point.

Then something broke it. Discard merging used to work.

-- 
Martin K. Petersen	Oracle Linux Engineering
  






  

    
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