I have reproduced this a third time and it seems was also able to confirm that the md device returns out of sync data:
# Tell btrfs to check checksums of files and metadata. $ btrfs scrub start -B /dev/mapper/md1_crypt # It reported: # - 106 errors # - 2 correctable, 104 uncorrectable # - 98 errors were checksum errors. # If you check /var/log/kern.log you'll see all the spam about checksum errors. What seems critical in reproducing it is applying step 3 to both disks as I had originally described. FYI by "Reboot" at the end of step 3 I meant "shut down". And you don't have to reboot at the start of step 4, its enough to keep the already booted session of the second disk of step 3. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1801555 Title: [FATAL] mdadm --grow adds dirty disk to RAID1 without recovery To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mdadm/+bug/1801555/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
