Bug#687456: btrfs: Oops when adding a device on a degraded raid1 filesystem
severity 687456 normal
In fact I created the RAID1-like filesystem the wrong way (btrfs wiki
is wrong). I was using a RAID1 strategy only for the metadata and not
the data. With the following command-line to create the fs, I no longer
get the Oops:
# mkfs.btrfs -m raid1 -d raid1 /dev/vdb /dev/vdc
(-d flag added).
Nevertheless, we still have a condition where we got a kernel Oops where
we should not so I am leaving the bug open but with a "normal" severity.