[Raid 5 btrfs - cannot mount]

Hi! Thanks for your answer. Apparently I don't have a group volume because typing vgdisplay --verbose or lvdisplay --verbose gives me the following output:

Quote

root@Synology:~# vgdisplay --verbose
    Using volume group(s) on command line.
    No volume groups found.
root@Synology:~# lvdisplay --verbose
    Using logical volume(s) on command line.
    No volume groups found.

 

cat /etc/fstab gives me the following:

Quote

root@Synology:~# cat /etc/fstab
none /proc proc defaults 0 0
/dev/root / ext4 defaults 1 1
/dev/md2 /volume1 btrfs auto_reclaim_space,synoacl,ssd,relatime 0 0

 

This is how it looks on my machine (hope you don't mind it's in german):

 

What advice can you give me? Should I try the commands from the other post?
btrfs rescue super /dev/md2
sudo btrfs-find-root /dev/md2
sudo btrfs insp dump-s -f /dev/md2
btrfs check --init-extent-tree /dev/md2

btrfs check --init-csum-tree /dev/md2

btrfs check --repair /dev/md2

 

Or is executing a btrfs recovery my best chance? Appreciate your help!

[Raid 5 btrfs - cannot mount]

Hi!

Unfortunately I have a big problem with my NAS. There is important data on the Raid 5 volume (consisting of 4 4TB hard drives). The raid seems to be fine, more likely a problem with the file system (btrfs). I hope someone can help me with my problem (fingers crossed).

I'm really grateful for any help.  The logs are attached. Please let me know if more logs are needed.

logsl.txt