>>>>> "Joe" == Joe Thornber <thornber@xxxxxxxxxx> writes: Joe> On Tue, Oct 29, 2019 at 08:25:23PM -0400, John Stoffel wrote: >> >>>>> "Joe" == Joe Thornber <thornber@xxxxxxxxxx> writes: >> >> [ I saw this and couldn't resist asking for more details ...] >> Joe> Also there are big changes to bcache coming, that remove file Joe> descriptors from the interface completely. See the branch Joe> 2019-09-05-add-io-manager for more info (bcache has been renamed Joe> io_manager). >> >> Can you post the full URL for this, and maybe give us a teaser on what >> to expect? I run lvache on my home system and I'd love to know how to >> A) improve reporting of how well it works, and B) whether I'm using it >> right, and of course C) if bcache would be a better replacement. >> >> I'm using Linux v5.0.21 (self compiled) on Debian 9.11 with lvcache >> setup. It's a pair of mirrored 250gb SSDs in front of 4tb of mirrored >> disk. >> >> So anything where I can use my SSDs to cache my data accesses is >> certainly interesting. Joe> Sorry, I think we're getting confused with similarly named Joe> things. There is a component in LVM source called 'block cache' Joe> that we use to scan devices in parallel (under the hood it uses Joe> aio). That component is being renamed. It's nothing to do with Joe> the disk caching technology called 'bcache'. Ah... that's a good reason for this rename then. Joe> However, Dave Teigland has been adding support to LVM for a new Joe> caching target that emphasises caching writes. So keep an eye Joe> out for that. Will do. It's never really been clear if lvcache has really helped or not, the testing was in-conclusive. John _______________________________________________ linux-lvm mailing list linux-lvm@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
