9 Nov
2012
9 Nov
'12
12:07 a.m.
Chris Samuel <chris@csamuel.org> writes:
On 05/11/12 10:07, Toby Corkindale wrote:
* set the 'discard' mount flag if you're using ext4, or 'ssd' on btrfs. (This tells the SSD when you've deleted stuff to free up space, and allows it to work a lot more efficiently)
That option is "discard" for btrfs too, the "ssd" option (which is automatically set if the kernel detects the disk as being non-rotational) determines allocation and commit log strategies.
Also ssd_sparse IIRC, for a different flavour of FTL. It's not very clear to me how to know which of the two to use.