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Solved
Missing volume after hard reboot
After losing access (no web, ssh, mounts, anything) from my ReadyNAS Pro 6 running 6.7.4 firmware, I decided to hard-reboot it by holding down the power button until it powered off. after booting...
I'm going to consider the data lost, and rebuild/factory reset back down to 4.2 for stability.
I think this is the answer without getting into costly data recovery services, or massive time investment.
Tried mounting from the command-line (at this point I'm a bit like a bull in a china shop... barely understanding the commands I'm Googling)...
sudo mount -r --source LABEL=33ea999f:data /data
mount: wrong fs type, bad option, bad superblock on /dev/md127,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
Tailing the dmesg...
dmesg | tail [ 1591.911995] BTRFS error (device md127): failed to read block groups: -5 [ 1591.912462] BTRFS critical (device md127): corrupt leaf, slot offset bad: block=2291416563712, root=1, slot=77 [ 1591.912478] BTRFS error (device md127): failed to read block groups: -5 [ 1591.914185] BTRFS critical (device md127): corrupt leaf, slot offset bad: block=2291416563712, root=1, slot=77 [ 1591.914200] BTRFS error (device md127): failed to read block groups: -5 [ 1591.916306] BTRFS critical (device md127): corrupt leaf, slot offset bad: block=2291416563712, root=1, slot=77 [ 1591.916320] BTRFS error (device md127): failed to read block groups: -5 [ 1591.939468] BTRFS critical (device md127): corrupt leaf, slot offset bad: block=2291416563712, root=1, slot=77 [ 1591.939484] BTRFS error (device md127): failed to read block groups: -5 [ 1591.954033] BTRFS error (device md127): open_ctree failed
I'm going to consider the data lost, and rebuild/factory reset back down to 4.2 for stability.
I think this is the answer without getting into costly data recovery services, or massive time investment.
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