Sync error due to same date but different size ?

[donauinsel]

Good morning. I have some problems syncing to NAS drives. Only a few files (4 or 5) from this dir cannot be synced because of the following error in FFS.

Die folgenden Elemente haben ungelöste Konflikte und werden nicht synchronisiert werden:
Ordnerpaar: \\nas1\backup\drive1 <-> \\nas2\backup\drive2.
BACKUP\folder\database.MYD: Die Dateien haben dasselbe Datum, aber unterschiedliche Größen.
Datum: Mi, 06.09.2023 09:53:58 Größe: 101.808.320 <-
Datum: Mi, 06.09.2023 09:53:58 Größe: 101.531.788 ->


[xCSxXenon]

Transfer them manually. They have different content in them but the timestamps are the same so FFS can't know which one is newer to decide which one to keep

[donauinsel]

When deleting the files FFS will copy them again but the next day i get the same error ?

[Zenju]

You're probably using the "old" "Update" variant. With the "changes"-based varant, this error does not occur: viewtopic.php?t=10594

[donauinsel]

I had this issue never before - i think last release - btw. the "changed-based" variant is extremly slow ..

[Zenju]

The "changed-based" sync config has no impact on sync performance.

[donauinsel]

Hmm so maybe this happens on first run only ?

[xCSxXenon]

I would figure out why the content is changing every time you sync the file...

[Zenju]

Hmm so maybe this happens on first run only ?

Yes, this error can come up on the first run, and only there: There's no database file yet, so FFS falls back on "differences"-based sync directions for "update". In this case the actual value of the file modification time is required and "same date, different size" is therefore a conflict.