It looks like everything went fine, what is the problem? On Fri, Oct 3, 2014 at 1:50 PM, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote: > > On 10/03/2014 03:37 PM, Slava Pestov wrote: >> Please include any bcache messages printed in dmesg when this happens. > > [87579.418945] bcache: bch_cached_dev_attach() Can't attach dm-4: already attached > [87579.418947] bcache: __cached_dev_store() Can't attach 8246b830-95d4-420d-aff8-894efc348801 > [87579.418947] : cache set not found > > For completeness, these are the steps are performed, soup to nuts: > > # wipefs -a /dev/dm-4 > 4 bytes [58 46 53 42] erased at offset 0x0 (xfs) > # wipefs -a /dev/dm-7 > 4 bytes [58 46 53 42] erased at offset 0x0 (xfs) > # wipefs -a /dev/sdc > # ./make-bcache -B /dev/dm-4 /dev/dm-7 -C /dev/sdc > Already a bcache device on /dev/sdc, overwrite with --wipe-bcache > # ./make-bcache -B /dev/dm-4 /dev/dm-7 -C /dev/sdc --wipe-bcache > UUID: 501486ea-d614-4a32-a137-bc8e004fcb85 > Set UUID: 8246b830-95d4-420d-aff8-894efc348801 > version: 0 > nbuckets: 761856 > block_size: 1 > bucket_size: 1024 > nr_in_set: 1 > nr_this_dev: 0 > first_bucket: 1 > UUID: 261cf532-ca93-45b7-a8fb-1eff57078953 > Set UUID: 8246b830-95d4-420d-aff8-894efc348801 > version: 1 > block_size: 1 > data_offset: 16 > UUID: eeca31ab-a632-4d7b-94f6-35e9b878344f > Set UUID: 8246b830-95d4-420d-aff8-894efc348801 > version: 1 > block_size: 1 > data_offset: 16 > # echo /dev/dm-4 > /sys/fs/bcache/register > # echo /dev/dm-7 > /sys/fs/bcache/register > # echo /dev/sdc > /sys/fs/bcache/register > > # ls -la /dev/b* > brw-rw---- 1 root disk 253, 0 Oct 3 14:39 /dev/bcache0 > brw-rw---- 1 root disk 253, 1 Oct 3 14:39 /dev/bcache1 > > # mkfs.xfs /dev/bcache0 > meta-data=/dev/bcache0 isize=256 agcount=44, agsize=268435455 blks > = sectsz=512 attr=2, projid32bit=0 > data = bsize=4096 blocks=11709285374, imaxpct=5 > = sunit=0 swidth=0 blks > naming =version 2 bsize=4096 ascii-ci=0 > log =internal log bsize=4096 blocks=521728, version=2 > = sectsz=512 sunit=0 blks, lazy-count=1 > realtime =none extsz=4096 blocks=0, rtextents=0 > > # mkfs.xfs /dev/bcache1 > meta-data=/dev/bcache1 isize=256 agcount=44, agsize=268435455 blks > = sectsz=512 attr=2, projid32bit=0 > data = bsize=4096 blocks=11709285374, imaxpct=5 > = sunit=0 swidth=0 blks > naming =version 2 bsize=4096 ascii-ci=0 > log =internal log bsize=4096 blocks=521728, version=2 > = sectsz=512 sunit=0 blks, lazy-count=1 > realtime =none extsz=4096 blocks=0, rtextents=0 > > # mount -o inode64,nobarrier,noatime,nodiratime /dev/bcache0 /mnt/V1A > # mount -o inode64,nobarrier,noatime,nodiratime /dev/bcache1 /mnt/V2A > > # ls -la /sys/fs/bcache > total 0 > drwxr-xr-x 3 root root 0 Oct 3 14:39 . > drwxr-xr-x 6 root root 0 Oct 2 16:32 .. > drwxr-xr-x 7 root root 0 Oct 3 14:50 8246b830-95d4-420d-aff8-894efc348801 > --w------- 1 root root 4096 Oct 3 14:39 register > --w------- 1 root root 4096 Oct 3 14:50 register_quiet > > # echo 8246b830-95d4-420d-aff8-894efc348801 > /sys/block/bcache0/bcache/attach > bash: echo: write error: Invalid argument > > >> On Fri, Oct 3, 2014 at 1:21 PM, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote: >>> # ls -la /sys/fs/bcache >>> total 0 >>> drwxr-xr-x 3 root root 0 Oct 3 14:39 . >>> drwxr-xr-x 6 root root 0 Oct 2 16:32 .. >>> drwxr-xr-x 7 root root 0 Oct 3 14:50 8246b830-95d4-420d-aff8-894efc348801 >>> --w------- 1 root root 4096 Oct 3 14:39 register >>> --w------- 1 root root 4096 Oct 3 14:50 register_quiet >>> >>> >>> # echo 8246b830-95d4-420d-aff8-894efc348801 > /sys/block/bcache0/bcache/attach >>> bash: echo: write error: Invalid argument >>> >>> >>> What's the problem here? >>> >>> Thanks, >>> Stan >>> -- >>> 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 -- 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
