Hi,
In short:
When mounting a second subvolume from a pool, I get this error:
"mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sda,
missing code page or helper program, or other."
dmesg | grep BTRFS only shows this error:
info (device sda): disk space caching is enabled
error (device sda): Remounting read-write after error is not allowed
What happened:
In my RAID1 pool with two disk, I successfully replaced one disk with
btrfs replace start 2 /dev/sdx
After that, I mounted the pool and did
btrfs fi show /mnt
which showed WARNINGs about
"filesystems with multiple block group profiles detected"
(don't remember exactly)
I thought it is a good idea to do
btrfs balance start /mnt
which finished without errors.
Now, I can only mount one (sub)volume of the pool at a time. Others can
only be mounted read-only. See error messages at top of this mail.
Do you have any idea what happened or how to fix it?
I already tried rescue zero-log and super-recovery which was successful
but didn't help.
Regards, Jakob
