On 22 Jun 2017, Eric Wheeler verbalised: > The physical blocksize must be the same as the cachedev IIRC. If 4k, use > -w 4k in make-bcache. There's a thread somewhere discussing those > details. They are both 4096, and my make_bcache line was make_bcache -B /dev/md/fast -C /dev/ssd2 --block 4096 --bucket 2M --data-offset $((2*30720)) which should be appropriate, I think? (This was my second attempt: I came out with a number of unprintable words when I found that make_bcache doesn't try to figure out an appropriate data offset when used atop a RAID array, so the default options misalign the entire thing.) (Something I didn't make clear enough is that there there were several successful restarts and remounts before the failed one.) This is a writethrough cache, so it can't be a writeback problem (thank goodness). -- NULL && (void) -- 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
