[...] > My question is whether OpenBSD addresses the special characteristics > of solid state drives, especially those having to do with longevity > and reliability. I can't find anything written on this. Linux has > certain means for addressing this issue, such as fstrim as well as > various kernel options. Is there anything I have missed with OpenBSD > on this subject?
I'm certainly not one to reply to this question on the raw metal/filesystem level, but I can assure you that I have used OpenBSD on SSDs (in different computers) for several years by now without noticing any of the scares that circulate about SSDs (those seem to be mainly filesystem corruption and/or significant slowdown). Some of the concerns may simply go back to early generations of SSD drives. I recall that tedu@ discussed SSDs and these matters on his flak blog previously that may contain more details and possibly reassurance for you. Mounting with softdep seems to be advisable. I'm happy to be complemented or corrected by someone with more in-depth knowledge of the low-level aspects of SSDs.
