End user documentation is on our github. I think it should go with the user level utilities, rather than the kernel driver.
-Amit

-----Original Message-----
From: Kent Overstreet [mailto:koverstreet-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org]
Sent: Friday, February 01, 2013 5:25 PM
To: Michel Lespinasse
Cc: Darrick J. Wong; Amit Kale; linux-bcache; device-mapper
development; Kent Overstreet; Mike Snitzer; LKML; Jason Warr;
thornber-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
Subject: Re: [RFC] [DONOTAPPLY] [PATCH] enhanceio: STEC EnhanceIO SSD
caching software for Linux kernel

Also, where's the end user documentation?

On Fri, Feb 1, 2013 at 5:23 PM, Kent Overstreet
[off-list ref] wrote:

quoted

On Fri, Feb 1, 2013 at 4:57 PM, Michel Lespinasse [off-list ref]

wrote:

quoted

quoted

On Fri, Feb 1, 2013 at 4:44 PM, Darrick J. Wong

[off-list ref] wrote:

quoted

quoted

quoted

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

quoted

quoted

quoted

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).

quoted

quoted

quoted

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

quoted

is making that difficult.

I saw some benchmarks the other day where on writes EIO was faster
than the raw device, which was... suspicious.

PROPRIETARY-CONFIDENTIAL INFORMATION INCLUDED



This electronic transmission, and any documents attached hereto, may contain confidential, proprietary and/or legally privileged information. The information is intended only for use by the recipient named above. If you received this electronic message in error, please notify the sender and delete the electronic message. Any disclosure, copying, distribution, or use of the contents of information received in error is strictly prohibited, and violators will be pursued legally.