I figured it out. The backing drives have a 512B sector size, and I used 4k with the cache drive. I'm shocked they don't use 4k, they're all relatively recent WD blacks. I thought they all transitioned years and years ago. Thanks anyways. On Tue, Dec 10, 2019 at 1:07 PM Eric Wheeler <bcache@xxxxxxxxxxxxxxxxxx> wrote: > > On Mon, 9 Dec 2019, Nathan Dehnel wrote: > > > root@gentooserver /home/nathan # blockdev --report /dev/bcache0 > > RO RA SSZ BSZ StartSec Size Device > > rw 256 512 4096 0 1000203083776 /dev/bcache0 > > root@gentooserver /home/nathan # blockdev --report /dev/md0 > > RO RA SSZ BSZ StartSec Size Device > > rw 256 512 4096 0 14255390720 /dev/md0 > > root@gentooserver /home/nathan # blockdev --report /dev/sda1 > > RO RA SSZ BSZ StartSec Size Device > > rw 256 512 4096 2048 1000203091968 /dev/sda1 > > root@gentooserver /home/nathan # bcache-super-show /dev/md0 > > sb.magic ok > > sb.first_sector 8 [match] > > sb.csum E9D560726742DDAB [match] > > sb.version 3 [cache device] > > > > dev.label (empty) > > dev.uuid cf8bc992-9797-4f47-8d3c-78731f5d1c2e > > dev.sectors_per_block 8 <<< > ^^^^^^^^^^^^^^^^^^^^^^^^^ > > > dev.sectors_per_bucket 1024 > > dev.cache.first_sector 1024 > > dev.cache.cache_sectors 27841536 > > dev.cache.total_sectors 27842560 > > dev.cache.ordered yes > > dev.cache.discard no > > dev.cache.pos 0 > > dev.cache.replacement 0 [lru] > > > > cset.uuid 45511b33-6bb8-42d5-a255-3de1749f8dda > > root@gentooserver /home/nathan # bcache-super-show /dev/sda1 > > sb.magic ok > > sb.first_sector 8 [match] > > sb.csum 7D8A76D84F264724 [match] > > sb.version 1 [backing device] > > > > dev.label (empty) > > dev.uuid d4d2b9d6-077d-4328-b2cd-14f6db259955 > > dev.sectors_per_block 1 <<< > ^^^^^^^^^^^^^^^^^^^^^^^^^ > > I think this is the issue. > > Assuming your cache doesn't have data on it yet, try this: > make-bcache --block 4k -B /dev/sdX1 > > -- > Eric Wheeler > > > > > dev.sectors_per_bucket 1024 > > dev.data.first_sector 16 > > dev.data.cache_mode 0 [writethrough] > > dev.data.cache_state 0 [detached] > > > > cset.uuid 4ae1adfc-b345-419f-9ce0-b450854370b0 > > > > On Mon, Dec 9, 2019 at 7:15 PM Eric Wheeler <bcache@xxxxxxxxxxxxxxxxxx> wrote: > > > > > > On Mon, 9 Dec 2019, Nathan Dehnel wrote: > > > > > > > [ 9651.101227] bcache: bch_cached_dev_attach() Couldn't attach sda1: > > > > block size less than set's block size > > > > > > What do these report: > > > > > > blockdev --report /dev/bcache0 > > > blockdev --report /dev/sdX # bcache cache dev > > > blockdev --report /dev/sdY # bcache bdev > > > > > > > > > bcache-super-show /dev/sdX # bcache cache dev > > > bcache-super-show /dev/sdY # bcache bdev > > > > > > -- > > > Eric Wheeler > > > > > > > > > > > On Mon, Dec 9, 2019 at 6:30 PM Eric Wheeler <bcache@xxxxxxxxxxxxxxxxxx> wrote: > > > > > > > > > > On Mon, 9 Dec 2019, Nathan Dehnel wrote: > > > > > > > > > > > root@gentooserver / # echo 45511b33-6bb8-42d5-a255-3de1749f8dda > > > > > > > /sys/block/bcache0/bcache/attach > > > > > > -bash: echo: write error: Invalid argument > > > > > > > > > > What does `dmesg` say? > > > > > > > > > > > > > > > -- > > > > > Eric Wheeler > > > > > > > > > > > > > > > > > > > > > > > > > > > How should I fix this? > > > > > > > > > > > >
