Re: DM-Cache Writeback & Direct IO?

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Subject: Re: DM-Cache Writeback & Direct IO?
From: Leonardo Santos <heiligerstein@xxxxxxxxx>
Date: Wed, 8 Jul 2015 14:55:05 -0300
In-reply-to: <CAEZ+n-j_9QGWi7pdZY71VAmF-tnuRWb_8neWBd3iKMTm-yQU1A@mail.gmail.com>
References: <9E0DEE10BA62134F89BB5A513CA84BC3A1A6B5CA@MAILSERVER01.trt9a.local> <CAEZ+n-j_9QGWi7pdZY71VAmF-tnuRWb_8neWBd3iKMTm-yQU1A@mail.gmail.com>
Reply-to: device-mapper development <dm-devel@xxxxxxxxxx>

Are you using sequential or random workload?

It's important, since DMCache bypasses sequential I/O based on theshold.

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