On Wed, May 25, 2022 at 11:44:01AM -0700, Eric Wheeler wrote: > In your experience, which SAS/SATA RAID controllers are best behaved in > terms of policies and reporting things like io_opt and > writeback/writethrough to the kernel? I never had actually good experiences with any of them. That being said I also haven't used one for years. For SAS or SATA attachd to expanders setups I've mostly used the mpt2/3 family of controllers which are doing okay.