>> First, filelevel is usually useless. Say you have 50 VMs with Windows >> server something. A lot of them are bound to have a ton of equal >> If you look at IOPS instead of just sequencial speed, you'll see the >> difference. A set of 10 drives in a RAID-6 will perhaps, maybe, give >> you 1kIOPS, while a single SSD might give you 50kIOPS or even more. >> This makes a huge impact. > > IOPs are already well server by LVM cache. So, I genuinely ask: what > would be tiering advantage here? I'll love to ear a reasonable use case. LVMcache only helps if the cache is there in the first place and IIRC it's cleared after a reboot. It help won't that much over time with large storage. It also wastes space. Vennlig hilsen roy -- Roy Sigurd Karlsbakk (+47) 98013356 http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- Hið góða skaltu í stein höggva, hið illa í snjó rita. _______________________________________________ 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/
