Can't go back to RW mode after system "protected" itself

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dbrami wrote:

To "fix" any issues, i pulled out a drive and put it back in, knowing some file scanning happens. The system status shows "healthy" but i still can't write any data.

 

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Very bad idea actually.  You are lucky you didn't lose all your data.

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dbrami wrote:

 

My research has led me to believe i need to unmount my subvolumes and remount as rw.

 

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No.  The mitigation needed depends on exactly what the file system error is - but unmounting/remounting the subvolume is never the answer. 

The error you posted is saying that you couldn't roll back a snapshot.  That of course will fail if the volume is already read-only, because the roll back requires write access to the volume.  So we don't yet have the info needed to tell what is wrong.  Possibly it is in the full log zip file, so I suggest downloading that right away.  But that is also problematic, since the error happened on 8 April or before, so the needed detials might no longer be in the logs.

If you don't have a full backup of your data, then the first step is to do that.  It is definitely at risk.  If you don't have enough storage, then purchase external drives, or whatever you need.  Back up what critical (irreplacable) data you can while waiting for the storage to arrive.

After you've ensured data safety, you have two basic options.  One is to try to repair what is wrong.  The other is to do a factory default, reconfigure the NAS, and restore data from backup.  Although the second option can be a lot of work, in practice it is often quicker than trying to repair the problem (and success is more certain).

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dbrami wrote:

Rolling back to snapshots doesn't work and Tech Support won't respond to me. 

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As I said above, rolling back to snapshots requires writing to the volume.  The NAS isn't allowing that.  The rationale is that any any writes to the volume is llikely to result in data loss.

Unfortunately many folks here are finding Netgear support to be non-responsive.  My own opinion is that Netgear has been quiet-quiting their storage business for some years now, and that they no longer have trained support staff.  Netgear hasn't announced anything - but the facts are that new ReadyNAS can't be found for purchase, and Netgear hasn't introduced a new ReadyNAS product since 2017.

Things have gotten worse - perhaps as a result of my meddling prior to reading your solutions.

And my logs have just blown up with the following pair of warnings:

When i run `mnt` command in CLI, i don't see any of my subvolumes that I *used* to have:

/dev/md127 on /data type btrfs (ro,noatime,nodiratime,nospace_cache,subvolid=5,subvol=/)
/dev/md127 on /home type btrfs (ro,noatime,nodiratime,nospace_cache,subvolid=257,subvol=/home)
/dev/md127 on /apps type btrfs (ro,noatime,nodiratime,nospace_cache,subvolid=258,subvol=/.apps)
/dev/md127 on /run/nfs4/data/CloudSync type btrfs (ro,noatime,nodiratime,nospace_cache,subvolid=2166,subvol=/CloudSync)
/dev/md127 on /run/nfs4/data/Data_backup type btrfs (ro,noatime,nodiratime,nospace_cache,subvolid=6290,subvol=/Data_backup)
/dev/md127 on /run/nfs4/data/Photos_Videos type btrfs (ro,noatime,nodiratime,nospace_cache,subvolid=3353,subvol=/Photos_Videos)
/dev/md127 on /run/nfs4/home type btrfs (ro,noatime,nodiratime,nospace_cache,subvolid=257,subvol=/home)
/dev/md127 on /run/nfs4/data/BananaMovies type btrfs (ro,noatime,nodiratime,nospace_cache,subvolid=271,subvol=/BananaMovies)

I now have a big enough external disk but can't access the data AND the NAS was not able to recognize the 5TB drive when plugged into the USB 3.0 port in the back...

SO much headaches...

Any ideas on proper command for remounting my subvolumes as btrfs so i can backup my data then factory reset?

Thanks in advance.

Daniel