I'm keeping an eye on btrfs, which looks very promising to me. The best
of most worlds, should eliminate the need for md/lvm, and the developers
appear to be taking ssd into account, although to be honest btrfs
appears to be a bit i/o intensive (mostly due to cow). Good stuff none
the less. Oracle will reportedly be using it, and Fedora developers are
trying hard to make it the default in F17.
--
-Eric 'shubes'
On 02/12/2012 12:08 PM, Michael Butash wrote:
I think it's still a lot of theory and assumption that goes on trying to
figure out exactly how to treat these darn SSD's just right, and every
one is different. So much information, yet none of it is really
comprehensive how exactly to deal with them across all the various
fs-types. It took me a few weeks to get my recipe working somewhat
reliably on my hp laptop, where the laptop has it's own issue to
compound it too (relating to disk security/locking in bios).
Kind of a shame, It only makes linux look piss poor when you have to
spend so much effort to figure out such a basic disk function if you
want to do it "right" and get the most performance/longevity. I still in
no way know if I really am, either. I'm hoping someone at canonical,
redhat, or even the disk vendors start building partitioning systems
intelligent account for SSD's, otherwise they're creating timebombs. My
first pair of SSD's didn't last a year before one began getting flaky
(2nd gen sata3 micron, the "good" ones), and that was with default
alignment with md/lvm atop it (no disk encryption at the time, just the
homedir).
Since trim support is still pretty wack (doesn't work fully between
lvm/luks/raid), I heard disk vendors are they're pushing the garbage
collection into hardware in the disk now at least. Maybe they need to
align themselves for the stupid os' too. :)
-mb
On 02/12/2012 09:34 AM, Eric Shubert wrote:
That's interesting, as I settled on 32x32 as well. It seems to fit all
the possibilities (4k sectors, etc).
Great minds think alike. ;)
Yeah, the installers aren't up to snuff with alignment or GPT yet from
what I've seen.
Thanks.
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