On Fri, Apr 10, 2015 at 2:58 PM, arnaud gaboury <arnaud.gaboury@gmail.com> wrote:
On Fri, Apr 10, 2015 at 2:38 PM, arnaud gaboury <arnaud.gaboury@gmail.com> wrote:
Below is part of $ lsblk return:
----------------------------------------- sdb sdb 8:16 ├─sdb1 sdb1 8:17 btrfs poppy-root └─sdb2 sdb2 8:18 --------------------------------------------------
/dev/sdb2 has no filesystem yet, and is not mounted anywhere.
Now running this command: ------------------------------------------------------ # make-bcache --block 4k --bucket 2M -B /dev/sdd4 -C /dev/sdb2 --discard Can't open dev /dev/sdb2: Device or resource busy -----------------------------------------------------------
I can't find any reason for /dev/sdb2 to be busy.
looking more carefully in /dev, I couldn't find any mapper or loop device be the culprite Running # mount | column -t did not show the device anywhere
------------------------------------------------------- $ journalctl -k .............................. Apr 10 14:18:32 hortensia kernel: bcache: register_cache() registered cache device sdb2 ................................................ # echo 1 > /sys/fs/bcache/2f01de58-8645-44e6-820e-13d6580b8d5b/stop # make-bcache --block 4k --bucket 2M -B /dev/sdd4 -C /dev/sdb2 --discard UUID: c205843b-127a-46e4-81d6-cee3dc6c587e Set UUID: 02afb25f-d9a4-47f3-9a0c-b84f071dfff6 version: 0 nbuckets: 13891 block_size: 8 bucket_size: 4096 nr_in_set: 1 nr_this_dev: 0 first_bucket: 1 UUID: 91771811-4f40-4e67-b2df-7baf0df3229a Set UUID: 02afb25f-d9a4-47f3-9a0c-b84f071dfff6 version: 1 block_size: 8 data_offset: 16 $ lsblk └─sdb2 sdb2 8:18 bcache └─bcache0 bcache0 254:0 ......................................................... └─sdd4 sdd4 8:52 bcache └─bcache0 bcache0 254:0 -------------------------------------------------------------------- Thank you journalctl. Everything is under control
Thank you for hint.
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