SSDs have all grown up now. Very fast speeds (250MB/s, 30000iops) can be had for a dollar per GB in last years drives, which now have pretty mature firmwares. For example the huge line of drives with Sandforce SF-2281 controllers. Why not use them for servers? For servers you usually want some kind of Raid (like a small Raid1). And/or LVM.
But it looks like the kind of drives I am talking about (RAInexpensiveD) expect TRIM[1] to be used on them. I found it very hard to see which Linux server distributions really do support TRIM going through the LVM and Raid layers. I did see mailing list announcements that version X of the kernel now has a patch supporting TRIM for mdraid. Same for LVM. But are those patches being backported to 3.2? Because Linux 3.2 seems to be the up and coming server kernel (at least for Debian based distros). Does TRIM actually work if you have an LVM sitting on top of a Raid1?
Since btrfs supports both TRIM and a lot of features found in mdraid and LVM, what about backports here? Are btrfs fixes being backported to 3.2?
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