For documentation purposes, this is the block device setup configured in the system to debug/test/fix/verify the bug.
disk partitioning: # fdisk /dev/sdb # create sdb1 and sbd2, 100G each. bcache backing device: LVM volume in partition 1 # pvcreate /dev/sdb1 # vgcreate vg-test /dev/sdb1 # lvcreate vg-test -n lv-test --size 99G bcache caching device: partition 2 # make-bcache -B /dev/mapper/vg--test-lv--test # make-bcache -C /dev/sdb2 bcache attach: # bcache-super-show /dev/sdb2 | grep cset.uuid cset.uuid 73f95583-561c-408f-a93a-4cbd2498f5c8 # echo 73f95583-561c-408f-a93a-4cbd2498f5c8 > /sys/block/bcache0/bcache/attach bcache writeback mode (important): # echo writeback > /sys/block/bcache0/bcache/cache_mode block device topology: # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdb 8:16 0 931.5G 0 disk ├─sdb2 8:18 0 100G 0 part │ └─bcache0 252:0 0 99G 0 disk /test └─sdb1 8:17 0 100G 0 part └─vg--test-lv--test 253:0 0 99G 0 lvm └─bcache0 252:0 0 99G 0 disk /test sda 8:0 0 931.5G 0 disk ├─sda2 8:2 0 931G 0 part / └─sda1 8:1 0 512M 0 part /boot/efi filesystem # mkfs.ext4 /dev/bcache0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1793901 Title: kernel oops in bcache module To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1793901/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
