Rclone about works on individual upstreams, but not on union

Help and Support
1

What is the problem you are having with rclone?

I use rclone union to combine multiple WebDAV remotes into one. When I check the individual WebDAV remotes using rclone about, it returns the total size and user storage space without any issues. However, when I include them in the union and then run rclone about on the union, I get the following error: NOTICE: Failed to about: about call failed: this usage field is not supported. I have tested all the individual WebDAV remotes, and they all work.

Run the command 'rclone version' and share the full output of the command.

rclone version

rclone v1.75.0

  • os/version: debian 13.6 (64 bit)
  • os/kernel: 7.1.3+deb13-amd64 (x86_64)
  • os/type: linux
  • os/arch: amd64
  • go/version: go1.26.5
  • go/linking: static
  • go/tags: none

Which cloud storage system are you using? (eg Google Drive)

WebDAV

The command you were trying to run (eg rclone copy /tmp remote:tmp)

rclone about ziel_union:

Please run 'rclone config redacted' and share the full output. If you get command not found, please make sure to update rclone.

[drive_1]
type = webdav
pass = XXX
url = https://XXXXXX/remote.php/webdav
vendor = other
user = XXX

[drive_2]
type = webdav
url = https://XXXXXX/remote.php/webdav
vendor = other
user = XXX
pass = XXX


[ziel_union]
type = union
upstreams = drive_1: drive_2:
create_policy = rand

A log from the command that you were trying to run with the -vv flag

#rclone about ziel_union: -vv
2026/08/15 15:59:46 DEBUG : rclone: Version "v1.75.0" starting with parameters ["rclone" "about" "ziel_union:" "-vv"]
2026/08/15 15:59:46 DEBUG : Creating backend with remote "ziel_union:"
2026/08/15 15:59:46 DEBUG : Using config file from "/root/.config/rclone/rclone.conf"
2026/08/15 15:59:46 DEBUG : Creating backend with remote "drive_2:"
2026/08/15 15:59:46 DEBUG : Creating backend with remote "drive_1:"
2026/08/15 15:59:46 DEBUG : found headers: 
2026/08/15 15:59:46 DEBUG : found headers: 
2026/08/15 15:59:46 DEBUG : union root '': actionPolicy = *policy.EpAll, createPolicy = *policy.Rand, searchPolicy = *policy.FF
2026/08/15 16:00:01 DEBUG : 5 go routines active
2026/08/15 16:00:01 NOTICE: Failed to about: about call failed: this usage field is not supported


# rclone about drive_1: -vv
2026/08/15 16:00:10 DEBUG : rclone: Version "v1.75.0" starting with parameters ["rclone" "about" "drive_1:" "-vv"]
2026/08/15 16:00:10 DEBUG : Creating backend with remote "drive_1:"
2026/08/15 16:00:10 DEBUG : Using config file from "/root/.config/rclone/rclone.conf"
2026/08/15 16:00:10 DEBUG : found headers: 
Total:   10 GiB
Used:    1.116 GiB
Free:    9.884 GiB
2026/08/15 16:00:35 DEBUG : 4 go routines active
2

This is strange as it works on my unions. I wonder if it is something WebDAV specific - shouldn't be... I have various unions but not with WebDAV.

Does it work for?:

# rclone about drive_2: -vv
3

Yes it does work normal with drive_2

rclone about drive_2: -vv

2026/08/15 18:38:22 DEBUG : rclone: Version "v1.75.0" starting with parameters ["rclone" "about" "drive_2:" "-vv"]
2026/08/15 18:38:22 DEBUG : Creating backend with remote "drive_2:"
2026/08/15 18:38:22 DEBUG : Using config file from "/root/.config/rclone/rclone.conf"
2026/08/15 18:38:22 DEBUG : found headers:
Total:   10 GiB
Used:    1.12 GiB
Free:    9.88 GiB