Ready NAS 100 - No more space after a failed balance operation

[Mahiro]

Hi,

I was ran out of space on my NAS. I disabled the snapshots on my mounts, and managed to get about 100GB of free space. (but it was still saying I had about 1TB of snapshots which I could not find on the interface).

I launched a balance operation. It got stucked and the NAS was not responding at all. I had to reinstall the firmware (I could not even reboot, I had to unplug it... And it could not boot completely).

After that, the 1TB of snapshots were classified as Data. So I had only 100GB of free space. I checked with SSH and I found a /data/._share/MyShare/.snapshot/ folder, full of big files (and which could easily explain the 1TB of snapshot I had previoulsy). But MyShare is an old share that has been deleted from my NAS for years.

I tried deleting it, but I have a "Read-only file system" errror. When I do a mount -l, I can see :

/dev/md127 on /data type btrfs (rw,noatime,nodiratime,nospace_cache,subvolid=5,subvol=/) [5dbf1e0e:data]

I tried to launch a scrub operation, which took plenty of time (days) but is now over. The issue is that I now have only 64KB of free space. Is there something I can do to delete this folder and free some space ?

Thanks !

[Retired_Member]

you cannot use command "del" to delete Btrfs snapshot,please try the command as below if you confirmed the old share MyShare was already deleted.

command of listing btrfs snapshots

#btrfs sub list -s /data

delete snapshots

#btrfs sub delete /data/MyShare/.snapshots/*/snapshot