Re: Use fast device only for metadata?

[Nikolaus Rath <Nikolaus@rath.org>]

On Feb 08 2016, Nikolaus Rath <Nikolaus@rath.org> wrote:
> Otherwise I'll give bcache a shot. I've avoided it so far because of the
> need to reformat and because of rumours that it doesn't work well with
> LVM or BTRFS. But it sounds as if that's not the case..

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 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

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