Also, where's the end user documentation? On Fri, Feb 1, 2013 at 5:23 PM, Kent Overstreet <koverstreet@xxxxxxxxxx> wrote: > On Fri, Feb 1, 2013 at 4:57 PM, Michel Lespinasse <walken@xxxxxxxxxx> wrote: >> On Fri, Feb 1, 2013 at 4:44 PM, Darrick J. Wong <darrick.wong@xxxxxxxxxx> wrote: >>> This is a patch to migrate STEC's enhanceio driver out of their github >>> repository and into the staging tree. From their README: >>> >>> "EnhanceIO driver is based on EnhanceIO SSD caching software product developed >>> by STEC Inc. EnhanceIO was derived from Facebook's open source Flashcache >>> project. EnhanceIO uses SSDs as cache devices for traditional rotating hard >>> disk drives (referred to as source volumes throughout this document). >>> EnhanceIO can work with any block device, be it an entire physical disk, an >>> individual disk partition, a RAIDed DAS device, a SAN volume, a device mapper >>> volume or a software RAID (md) device." >> >> What's your take on the benefits of this vs bcache ? > > I've been trying to review it it for cache coherency and consistency > wrt. power failures, but the complete lack of high level documentation > is making that difficult. > > I saw some benchmarks the other day where on writes EIO was faster > than the raw device, which was... suspicious. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
