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Forum Discussion
Emergency - OS 6.4.0 - All my data is gone! Cannot reboot.
Hi, My readynas updated just over a week ago to 6.4.0. Since then it has been a little unstable, but I was able to reboot when it became unresponsive. Today I couldn't access the admin page, or ...
What I found in the end was that my btrfs volume takes a really long time to mount on every reboot.
To recover, (because I had a raid1 setup) I was able to remove 1 drive and use a linux box to mount the disk:
mdadm --verbose --assemble /dev/md127 /dev/sdb3 --run
The --run is required to mount a raid1 without all disks available.
I then was able to mount the btrfs disk, but I had to use special options, otherwise the mount process would take > 24 hours.
mount -t btrfs -o ro,recovery /dev/md127 /mnt
From there I did a factory reset on my readynas and am now able to rsync my old data from /mnt to my NAS box.
This problem can occur if the device gets powered off while the btrfs disk is being updated.
Hi jameswalmsey1,
It seems that you're able to fix the problem with your ReadyNAS and the data is currently being copied through RSYNC.
Let us know if you have other questions or in need of assistance.
Kind regards,
BrianL
NETGEAR Community Team
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