bcache has the advantage of being natively integrated to the linux
kernel, feeling more "proper". It seems slightly faster than flashcache
too, but YMMV. However you cannot add bcache as an afterthought to an
existing volume, but you can set up flashcache this way apparently.
I had a few crashes with bcache on different machines but never had any
corruption, so it looks production-safe.
Le Thu, 2 Jul 2015 07:48:48 -0300
German Anders <ganders@xxxxxxxxxxxx> écrivait:
> The idea is to cache rbd at a host level. Also could be possible to
> cache at the osd level. We have high iowait and we need to lower it a
> bit, since we are getting the max from our sas disks 100-110 iops per
> disk (3TB osd's), any advice? Flashcache?
--
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Emmanuel Florac | Direction technique
| Intellique
| <eflorac@xxxxxxxxxxxxxx>
| +33 1 78 94 84 02
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