I can't say I have tried it but -pog would all also result in duplicating files (assuming they are different).

On 9/25/22 14:49, Hardy via rsync wrote:
Thanks Kevin,

-a implies rlptgoD and I obviously used it by comfort and habit. Omitting -t (and perhaps also gop, not really needed) might solve my problem? Will give it a try.

Am 25.09.22 um 20:30 schrob Kevin Korb via rsync:
-a is telling rsync to copy the metadata.  --size-only is telling rsync to skip the contents of files that are the same time.  Without --link-dest rsync would just update the metadata on the target. However, with --link-dest rsync is being told to make the same file with 2 different metadatas.  It can only do so by duplicating the file (effectively the same as --copy-dest).

On 9/25/22 14:26, Hardy via rsync wrote:

rsync shall ignore differences in meta (inode) data, but does not even with --size-only. -- If in combination with --link-dest.
Is there any flag I missed?

I use
rsync -avbuH --size-only --stats --delete-excluded --link-dest=/path/to/last "user@system:Shared/Data" /path/to/now

to sync backup-style and use the --link-dest option to minimize traffic (and space) and still have a full backup each time. So far nothing special. Now it happens that at the source side data changes are moderate, but meta information (like atime, mtime) do change a lot. I didn't find a solution to make rsync ignore these differences to use a link. --size-only and -t (implied by -a) work ok with a simple syncs, but obviously (for me) it does not in combination with --link-dest. I can understand the motivation behind this: rsync is not allowed to change meta data of the existing inode, nor can it neglect the change - or can it?


        Kevin Korb                      Phone:    (407) 252-6853
        Systems Administrator           Internet:
        FutureQuest, Inc.               ke...@futurequest.net  (work)
        Orlando, Florida                k...@sanitarium.net (personal)
        Web page:                       https://sanitarium.net/
        PGP public key available on web site.

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