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. The LVM is available (I can see /dev/mapper/vgData_lvHome), when I do a bcache-super-show /dev/mapper/vgData_lvHome I get sb.magic ok ssb.first_sector 8 [match] sb.csum xxxxx [match] ssb.version 1 [backing device] dev.label (empty) dev.uuid xxxxx dev.sector_per_block 8 dev.sector_per_bucket 1024 dev.data.first_sector 16 dev.data.cache_mode 1 [writeback] dev.data.cache_state 2 [dirty] cset.uuid yyyyyyy (note that it matches the entry in /sys/fs/bcache) similar stuff for the other logical volumes so looks like the header is ok. dmesg reports only the following entries about bcache bcache: bch_journal_replay() journal replay done, 46 keys in 17 entries seq 973143 bcache: register_cache() registered cache sdb1 note that the same replay message is reported at each reboot. /dev/block has no bcache* entries looking at /sys/fs/bcache/yyyyyy what seems suspicious to me is that the cache_available_percent is at 100 and dirty data is at 0 is it because it is not "connnected" to the backing devices? What can I do now to recover from this situation/help providing you information to determine the problem and hav my disk back? Thanks! Thierry -- 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
