to many open files

All of a sudden the garbage collect job started to fail with: TASK ERROR: update atime failed for chunk/file "/mnt/proxmox-backup/.chunks/69f8/69f82c53064d2eb7795d401a63177ebda5bba778f02db397235e6508a2fee0ed" - EMFILE: Too many open files This happens after marked 85% (212 of 249 index files)...

Hello, we have a recurring issue where one of our proxmox backup servers thats under heavy load stops working about once a month. The pbs stopped working differently every time but it was always due to the an Error some where stateing "Too many open files". This time the proxmox-backup service...