[already sent 2 days ago, but did not appear on the list] On Mon, Dec 02, 2013 at 11:36:47PM +0100, Thierry De Leeuw wrote: > Hi, > > Running Linux 3.12.1. I have disk /dev/sda2 with LVM that has, amongst > other, lvHome as a bcache device, and the cache resides on /dev/sdb1 > > My PC hung and I had to do a forced shutdown. > > Now the /dev/bcache0 (and so on) do not appear anymore. Perhaps you need to re-register / re-attach the backing device to the caching device, something like echo /dev/dm-xx > /sys/fs/bcache/register echo yyyyyyy > /sys/devices/virtual/block/dm-xx/bcache/attach If that does not help, you can try to force starting the bcache backing device without the caching device (might give you serious fs damage with writeback): echo "1" > /sys/devices/virtual/block/dm-xx/bcache/running But since you are using LVM, you might want to create a snapshot of the backing device LV before doing this, just in case. Regards Matthias -- 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
