Caching Thumbs in .cache/thumbnails not same hash for 2 pc's

Hi, I have a large set of images and videos and access them by mount share (nfs).
I would like to create the thumbnails (which are living in .cache/thumbnails) on the host and share on each pc, but run in the issue that the local pc’s create the thumbs again with different file names.

I learned somewhere that the file names are md5 hashes, somehow decoded.

My file has same md5 hash by accessing local and from remote.

site$ md5sum 1.jpg 
75a3f19be2b9c897c97a2e37e640d436  1.jpg

but dolphin generates not recognize the files createt on remote (copied by rsync) and creates new set of files.

429ae7fc3976e8553df4be60d7fbaa52.png
5566d46e9c4a4fce8a57f36310a8af1cf.png

Any idea how to fix this? Or what’s happening there. Maybe there is some mixed key with is evolved and needs to be set.

The hash is computed on the file path not its content.

Computing md5 for all images would be noticeably slow.

The content is in .cache, that is a cache for the local machine, not meant to be shareable.
On the other hand generating thumbnails is cheap, and syncing that is really zealous.

1 Like

Over network nothing cheap. I also access over internet by for example ssh fs mounted as share. Dolphin tries to generate previews what is lot of traffic.

There is a info for feature

Creating previews over network is very traffic intensive.
So the questing is still open. Is there any way to share thumbs? May be there is some mix in key that can be shared for different systems to archive that the preview have the same uids(names).