On Feb 07 2016, Nikolaus Rath <Nikolaus@xxxxxxxx> wrote: > Hello, > > The internet claims that using bcache with LVM is not a good idea > (eg. on https://wiki.archlinux.org/index.php/Bcache )- but I wasn't able > to find any substantial information other than this general > recommendation. > > Is this still (or has ever been) correct? If so, what issues can arise? > And does this happen only when using bcache on top of an LVM LV, or also > when using a bcache device as an LVM PV? I now have the following stack: btrfs on LUKS on LVM on bcache The VG contains two bcache PVs with backing devices on different spinning disks, and a shared cache device on SSD. I'm using Kernel 4.3. I'm super happy with the performance, boot times increased from 1:30 minutes to X11 and 2:00 to Firefox to roughly 0:10 to X11 and 0:30 to Firefox. Time will tell if it also keeps my data intact, but I hope btrfs would at least detect any corruption. Best, -Nikolaus (No Cc on replies please, I'm reading the list) -- GPG encrypted emails preferred. Key id: 0xD113FCAC3C4E599F Fingerprint: ED31 791B 2C5C 1613 AF38 8B8A D113 FCAC 3C4E 599F »Time flies like an arrow, fruit flies like a Banana.« -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
