On 25/10/18 19:13, Paul Lawrence wrote: >> I have some questions about dm-bow: >> – How file system agnostic this feature is planned to be? While it is >> designed with ext4 in mind, is it going to work when used over other >> file systems, like FAT or BTRFS for example? > So long as the file system supports fstrim, it should work. If the file > system creates a lot of churn say by running garbage collection, I'd not > recommend it. And I really don't see the use case if the file system has > any sort of snapshot capability - that will always be a superior > solution to a block level one IMO. Sorry for being dense, but why is this posted to linux-raid, then? Raid does not support fstrim, and is filesystem-agnostic. I can imagine people here being interested, but it feels to me as though your functionality is completely orthogonal to raid. Sorry. Cheers, Wol
