On Sun, 4 Jun 2017, Marc MERLIN wrote: > On Sun, Jun 04, 2017 at 06:55:09PM -0700, Marc MERLIN wrote: > > gargamel:/sys/block/bcache1/bcache# echo 1 > stop > > returned nothing. > > Actually I was kind of expecting a note in my logs that the cache had > > been stopped, but eh, at least no errors :) > > Right, but now how do I re-enable my cache? > I can't seem to. > > gargamel:/sys/block/md8# ls bcache > ls: cannot access 'bcache': No such file or directory > > gargamel:/sys/block/bcache1# l > total 0 > drwxr-xr-x 8 root root 0 Jun 4 18:53 ./ > drwxr-xr-x 15 root root 0 Jun 4 18:53 ../ > -r--r--r-- 1 root root 4096 Jun 4 18:53 alignment_offset > -rw-r--r-- 1 root root 4096 Jun 4 18:53 badblocks > lrwxrwxrwx 1 root root 0 Jun 4 18:53 bcache -> ../md8/bcache > lrwxrwxrwx 1 root root 0 Jun 4 18:53 bdi -> ../../bdi/252:16/ > > gargamel:/sys/block/bcache1# l ../md8/bcache > ls: cannot access '../md8/bcache': No such file or directory Don't trust ../ to link correctly with so many symlinks floating around. Sometimes ../ will be interpreted correctly via a link path, other times it will use the '..' inode's content which may not be the way you came in. I'm not saying thats the problem, but perhaps... > echo /dev/md8 > 4a46e74d-0376-41e7-aff4-0a0497b9e3c5/unregister Try echo 1 > uuid/unregister > gargamel:/sys/block/bcache1/bcache# echo /dev/md8 > /sys/fs/bcache/register > bcache: register_bcache() error opening /dev/md8: device already registered > > Looks like stop doesn't unregister the device, I can't re-register it, > nor restart it. > > Or am I missing something? > I'd love not to have to reboot to recover :) Is /dev/md8 the cache or bdev? Did you stop the cache, too, in /sys/fs/bcache/uuid/stop? Stopping via /sys/block/bcache0/bcache/stop doesn't stop the cache IIRC. -- Eric Wheeler > > Thanks, > Marc > -- > "A mouse is a device used to point at the xterm you want to type in" - A.S.R. > Microsoft is to operating systems .... > .... what McDonalds is to gourmet cooking > Home page: http://marc.merlins.org/ | PGP 1024R/763BE901 > -- 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
