Hello Gordan,
Gordan Bobic wrote (ao):
> Mike Fedyk wrote:
> >On Wed, Mar 10, 2010 at 11:49 AM, Gordan Bobic <[email protected]> wrote:
> >>Are there options available comparable to ext2/ext3 to help reduce
> >>wear and improve performance?
With SSDs you don't have to worry about wear.
> And while I appreciate hopeful remarks along the lines of "I think
> you'll get more out of btrfs", I am really after specifics of what
> the ssd mount option does, and what features comparable to the
> optimizations that can be done with ext2/3/4 (e.g. the mentioned
> stripe-width option) are available to get the best possible
> alignment of data and metadata to increase both performance and life
> expectancy of a SSD.
Alignment is about the partition, not the fs, and thus taken care of
with fdisk and the like.
If you don't create a partition, the fs is aligned with the SSD.
> Also, for drives that don't support TRIM, is there a way to make the
> FS apply aggressive re-use of erased space (in order to help the
> drive's internal wear-leveling)?
TRIM has nothing to do with wear-leveling (although it helps reducing
wear).
TRIM lets the OS tell the disk which blocks are not in use anymore, and
thus don't have to be copied during a rewrite of the blocks.
Wear-leveling is the SSD making sure all blocks are more or less equally
written to avoid continuous load on the same blocks.
Sander
--
Humilis IT Services and Solutions
http://www.humilis.net
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
