Does not work with Hardlinks

[karshd]

Hello and thanks for the script

It seems like it doesnt work with hardlinks

cp: cannot create hard link '/mnt/data/template/host-services-docker-dir.pxar.didx.zip' to '/mnt/cache/template/host-services-docker-dir.pxar.didx.zip'cp: cannot create hard link '/mnt/data/test/host-services-docker-dir.pxar.didx.zip' to '/mnt/cache/test/host-services-docker-dir.pxar.didx.zip': Invalid cross-device link
: Invalid cross-device link
ERROR:root:Unexpected error moving file: Command '['cp', '-al', '/mnt/cache/template/host-services-docker-dir.pxar.didx.zip', '/mnt/data/template/host-services-docker-dir.pxar.didx.zip']' returned non-zero exit status 1.
ERROR:root:Unexpected error moving file: Command '['cp', '-al', '/mnt/cache/test/host-services-docker-dir.pxar.didx.zip', '/mnt/data/test/host-services-docker-dir.pxar.didx.zip']' returned non-zero exit status 1.
2025-01-19 20:40:08,294 - ERROR - File Move Operation:
  From: /mnt/cache/template/host-services-docker-dir.pxar.didx.zip
  To: /mnt/data/template/host-services-docker-dir.pxar.didx.zip
  Unexpected error moving file: Command '['cp', '-al', '/mnt/cache/template/host-services-docker-dir.pxar.didx.zip', '/mnt/data/template/host-services-docker-dir.pxar.didx.zip']' returned non-zero exit status 1.
2025-01-19 20:40:08,295 - ERROR - File Move Operation:
  From: /mnt/cache/test/host-services-docker-dir.pxar.didx.zip
  To: /mnt/data/test/host-services-docker-dir.pxar.didx.zip
  Unexpected error moving file: Command '['cp', '-al', '/mnt/cache/test/host-services-docker-dir.pxar.didx.zip', '/mnt/data/test/host-services-docker-dir.pxar.didx.zip']' returned non-zero exit status 1.

Any chance to support hardlinks ?

[monstermuffin]

Hey @karshd, the system should support hardlinking and what you're seeing was supposed to be implemented for this (cp -al) but I don't use hardlinks personally so haven't been able to test this.
I just wrote a quick test and wasn't able to reproduce this, could you please give me more info about the setup?

• What filesystem type are you using for both the cache and backing storage?
• Are you using mergerfs? If so, could you share your mergerfs mount options?
• Could you share the output of df -T for both your cache and backing paths?

Looking into the Invalid cross-device link error, it may be that hardlinks will be unsupported based on the setup, but we can certainly see what can be done.