On 27.10.2014, at 17:06, "Carlos E. R."
bcache is like a huge hd disk cache residing in a flash disk.
http://en.wikipedia.org/wiki/Bcache
Has some one tried it in openSUSE? Do you know of some document?
I have used it with openSUSE 13.1, it works great. In particular, when used in front of a RAID array of spinning disks, it can speed up writes significantly. With write-back caching enabled, applications write to the SSD cache and return, then bcache dumps it all to the RAID array later. Eventually I stopped using it simply because I don't really need the extra performance. After all, it is one more thing that can break. Also, I tried to bcache two RAID arrays on one machine. One problem with that is that the corresponding bcache devices (called /dev/bcache0 and /dev/bcache1) can't be used in /etc/fstab directly because they get assigned "randomly" by udev. The solution to that is supposed to be mapping by UUID using the links in /dev/bcache/by-uuid/, but unfortunately that's broken: http://bugzilla.opensuse.org/show_bug.cgi?id=880858 Using a single bcache shouldn't be a problem, though. Regards, Olav-- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org