From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul B. Henson Date: Mon, 17 Feb 2014 14:12:10 -0800 Subject: cache support In-Reply-To: <0C83CD55-18B6-4407-9A42-72F9D6C5683D@redhat.com> References: <096101cf2214$d241ed60$76c5c820$@acm.org> <52F205CA.1090807@redhat.com> <0a3901cf22af$ae01d2d0$0a057870$@acm.org> <52F2AD44.8030006@redhat.com> <0a7b01cf22db$da3f56c0$8ebe0440$@acm.org> <0fff01cf276c$d059c8d0$710d5a70$@acm.org> <0C83CD55-18B6-4407-9A42-72F9D6C5683D@redhat.com> Message-ID: <185501cf2c2d$53f02030$fbd06090$@acm.org> List-Id: To: lvm-devel@redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit > From: Brassow Jonathan > Sent: Wednesday, February 12, 2014 9:40 AM > > I'll let others weigh-in on the overhead of introducing thin-provisioning. > However, my experience is that the overhead is very small and the benefit is > very large. [...] > You now have a very fast thin pool from which you will create thin volumes > and snapshots. Everything is cached with low overhead. Hmm, interesting; this would allow me to work within the confines of the intended lvm cache support yet achieve my goal of using a single cache device for all of my LV's. That does seem preferable to trying to manage dm-cache manually with dmsetup. Thanks.