Damn it! Everything working fine yesterday morning. Computer only used for backups. Latest UrBackup v.2.4.13 server using a BTRFS filesystem for backups. I have plenty of space on single partition btrfs filesystem (~20% of 6.5TB). I don’t know how many file descriptors are available, but lsof | wc -l returns 17058. Rebooted. Now I get multiple lines in log file:
WARNING: Error opening temporary file. Retrying…
and last line is:
ERROR: Error deleting directory “/urbackup/urbackup_tmp_files”
So, I thought I would use CLI to delete and recreate the temporary directory. As root, if I use either “rm -r” or “rmdir”, I get a response of a Read-only filesystem.
Since the directory is not a subvolume, I assumed “btrfs subvolume delete” wouldn’t work, but… I tried it anyway:
“btrfs subvolume delete /urbackup/urbackup_tmp_files/”
ERROR: not a subvolume: /urbackup/urbackup_tmp_files/
btrfs fi df -h /urbackup/
Data, single: total=6.20TiB, used=5.08TiB
System, DUP: total=8.00MiB, used=704.00KiB
Metadata, DUP: total=46.00GiB, used=18.76GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
What can I do to recover my situation? Thank you!