Important: MSR 2.9.x reaches End of Life (EOL) on 2026-DEC-01. Mirantis strongly recommends upgrading to the latest supported version to continue receiving updates, fixes, and support.

Too many open files

When migrating a large source installation to your MSR target environment, MMT can fail due to too many files being open. If this happens, the following error message displays:

failed to extract blob data to filesystem: failed to copy file <filename>
from storage driver to <registry name>: error creating file: <filename>:
open <filename>: too many open files

To resolve the issue, run the following command in the terminal on which you are running MMT:

ulimit -n 1048576