Before you start
Associated forum post URL
No response
What is the problem you are having with rclone?
If a file was uploaded using rcat, this skips populating the md5 field. If a subsequent copyto is executed over that with --checksum, the checksum check is skipped as seen in the rclone -vv output below. This probably also affects copy, I have not tested.
...
2026/06/22 12:19:28 DEBUG : 6 go routines active
2026/06/22 12:19:28 DEBUG : rclone: Version "v1.74.3" starting with parameters ["./rclone" "--config=/dev/null" "--s3-provider=Cloudflare" "--s3-endpoint=https://<REDACTED>.r2.cloudflarestorage.com" "--s3-no-check-bucket" "--s3-env-auth=true" "--s3-chunk-size=5Gi" "--s3-copy-cutoff=5Gi" "--s3-upload-cutoff=5Gi" "--checksum" "-vv" "copyto" "/srv/up/b/tempfilez/tmp.F9JSfKLfJI" ":s3:<REDACTED>...flattened.ndjson.zst"]
2026/06/22 12:19:28 DEBUG : Creating backend with remote "/srv/up/b/tempfilez/tmp.F9JSfKLfJI"
2026/06/22 12:19:28 DEBUG : Using config file from ""
2026/06/22 12:19:28 DEBUG : fs cache: renaming child cache item "/srv/up/b/tempfilez/tmp.F9JSfKLfJI" to be canonical for parent "/srv/up/b/tempfilez"
2026/06/22 12:19:28 DEBUG : Creating backend with remote ":s3:<REDACTED>...2026/06/21/"
2026/06/22 12:19:28 DEBUG : :s3: detected overridden config - adding "{qzX-7}" suffix to name
2026/06/22 12:19:28 DEBUG : fs cache: renaming cache item ":s3:<REDACTED>...2026/06/21/" to be canonical ":s3{qzX-7}:<REDACTED>...2026/06/21"
2026/06/22 12:19:28 DEBUG : <REDACTED>...flattened.ndjson.zst: size = 541214 OK
2026/06/22 12:19:28 DEBUG : <REDACTED>...flattened.ndjson.zst: Dst hash empty - aborting Src hash check <--- THIS IS A
2026/06/22 12:19:28 DEBUG : tmp.F9JSfKLfJI: Size of src and dst objects identical <--- SERIOUS PROBLEM
2026/06/22 12:19:28 DEBUG : tmp.F9JSfKLfJI: Unchanged skipping
2026/06/22 12:19:28 INFO :
Transferred: 0 B / 0 B, -, 0 B/s, ETA -
Elapsed time: 0.0s
rclone version
rclone v1.74.3
- os/version: debian 12.6 (64 bit)
- os/kernel: 6.9.7 (x86_64)
- os/type: linux
- os/arch: amd64
- go/version: go1.26.2
- go/linking: dynamic
- go/tags: none
Built straight from https://github.com/rclone/rclone/releases/tag/v1.74.3
Operating system
Linux
Which cloud storage system are you using?
Cloudflare R2
Output of rclone config redacted
There is no config, everything runs with `... --config=/dev/null`
The command you were trying to run
A log from the command with the -vv flag
Anything else?
No response
Before you start
Associated forum post URL
No response
What is the problem you are having with rclone?
If a file was uploaded using
rcat, this skips populating themd5field. If a subsequentcopytois executed over that with--checksum, the checksum check is skipped as seen in therclone -vvoutput below. This probably also affectscopy, I have not tested.rclone version
rclone v1.74.3
Built straight from https://github.com/rclone/rclone/releases/tag/v1.74.3
Operating system
Linux
Which cloud storage system are you using?
Cloudflare R2
Output of
rclone config redactedThere is no config, everything runs with `... --config=/dev/null`The command you were trying to run
A log from the command with the
-vvflagAnything else?
No response