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Lost Volumes following stuck Reboot
My NAS was gracefully rebooted but it was stuck at 97% for a long time so I forced reboot it. Unfortunately my volume is now missing. I can SSH to the NAS and also from GUI I can get to it but I get ...
You could send your logs in (see the Sending Logs link in my sig).
GM mdgm, thanks for your response. Is there a way I can tar/gzip or just extract the logs from shell and send you. My NetGear NAS web page is again stuck. I went to look at the front of the NAS and I see it's stuck again and in the process of rebooting again. I can SSH fine though and see the following mounted FS
root@ReadyNAS64:~# df -h
Filesystem Size Used Avail Use% Mounted on
udev 10M 4.0K 10M 1% /dev
/dev/md0 4.0G 2.7G 4.0K 100% /
tmpfs 1.9G 0 1.9G 0% /dev/shm
tmpfs 1.9G 8.7M 1.9G 1% /run
tmpfs 961M 1.4M 960M 1% /run/lock
tmpfs 1.9G 0 1.9G 0% /sys/fs/cgroup
/dev/md0 4.0G 2.7G 4.0K 100% is a bit unusual, saying that you are using 2.7GB out of 4.0GB, but the volume is 100% full. You could balancing the OS partition (using the btrfs command from ssh).
Though 2.7G used is also quite full - you must have installed some packages or apps that use OS partition space. You should probably shift some of those folders to the data volume (symlinks are one way to accomplish this). Of course that will need to wait until the data volume is mounted.
Thank you StephenB for your time. Yes, I agree a FS at 100% is just not right. I am trying to think if I did any package update before that may have taken effect following the reboot but can't recall (likely I am forgetting, after all something changed). Since I have another NAS on network and have connectivity I can temporarily scp files over if that might help and then attempt to do a reboot again to see if NAS can be brought up online
It's not really 100% full; there appear to be unused blocks that can be reclaimed to the free space pool. That is why I suggested the balance. Something like btrfs balance start / should work, though you can get it to run faster if you set some filters. https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs-balance
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