On Tue, 9 Aug 2016 09:39:45 -0400 Noah Massey <noah.massey@xxxxxxxxx> wrote: > Since your data and metadata profiles are both 'single', you may want > to consider creating the filesystem with the --mixed option, which > allows / forces BTRFS to use a single collection of data blocks for > both data and metadata. That also seems to be detrimental to performance, I had servers with mixed profile FSes which went painfully slow after a couple of years (daily snapshot creation and deletion, ~30-60 snapshots kept at all times), migrated them all now to the regular split profile. Fresh off mkfs they are fast of course, so not entirely certain "mixed" was the culprit, will see. One more problem with mixed is that you can't use the leaf and nodesize of 16k, which are accepted to be faster than the older default (and mixed's only option) of 4k. -- With respect, Roman
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