On 4/10/17 10:06 PM, Andreas Dilger wrote: > Hi Ted, > now that FAST'17 is behind us, is there any plan to land the ext4-lazy code > (SMR optimizations) to the upstream kernel? This looks like it improves > some workloads even without SMR disks, and doesn't have any noticeable > overhead for other workloads. > > I'd guess the one thing that we might want to do is still allow the journal > to optionally checkpoint the metadata to the filesystem in the background, > when the filesystem is otherwise idle, so that in case of journal loss for > some reason the whole filesystem is not lost? IIRC even the new larger default journal size was a big win by itself, yes? -Eric
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