W dniu 26.08.2016 o 04:10, Kent Overstreet pisze: > On Thu, Aug 25, 2016 at 02:03:33PM +0200, Marcin Mirosław wrote: >> https://lwn.net/Articles/655183/ : >> "Caveat: don't try to use tiering and checksumming or compression at the >> same time yet, the read path needs to be reworked to handle both at the >> same time." >> >> Is it sill valid? > > No, I did do that read path reworking, they should work. > > However, I haven't been focusing on or exercising the multi device stuff in > quite awhile - my main priority has been making single device filesystems rock > solid and finishing off compression and such. > > Tiering ought to work, but can you hold off on exercising anything else? e.g. > the active/RO transition stuff - I'm going to have to spend a fair amount of > time digging into that code and figuring out what makes sense when the time > comes. Ok, I'll focuse on one disk bcachefs. > The checksum error is highly concerning though - that was related to messing > with cache0/state, correct? I think Christopher is using tiering with > checksumming enabled, can you confirm? Yes, I only did echo "readonly", next "active" to >state. It was enough to get BUG in kern.log. Marcin -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
