Is this any nearer to a solution?
I have the same issue on a Ubuntu 20.04.4 LTS; Kernel 5.4.0-105-generic x86_64
Level Time Message
Errors
03/28/22 19:55
Creating snapshot of "/mailcow_backups" failed
Errors
03/28/22 19:55
Snapshotting device /dev/sda1 via dattobd...
Errors
03/28/22 19:55
Using /dev/datto1...
Errors
03/28/22 19:55
driver returned an error performing specified action. check dmesg for more info: Invalid argument
Errors
03/28/22 19:55
Creating snapshot of "mailcow_backups" failed.
dmesg
[200809.885307] datto: block device is already being traced: -22
[200809.886917] datto: error setting up base block device: -22
[200809.888380] datto: error setting up tracer as active snapshot: -22
[200809.889929] datto: error during setup ioctl handler: -22
reboot fixed it for now.
But the logs in Ur show
Info
03/28/22 21:15
Removing snapshot on "116.xxx.224.xxx" for path "mailcow_backups" failed: FAILED**
dmesg | grep datto
[ 5.154706] dattobd: loading out-of-tree module taints kernel.
[ 5.156867] dattobd: module verification failed: signature and/or required key missing - tainting kernel
[ 5.160117] datto: failed to locate system call table, persistence disabled
[ 5.162073] dattobd: root block device = /dev/disk/by-uuid/64a65c41-0a19-4f9c-b68b-8577bc58b2e0
[ 5.175881] dattobd: mounting /dev/disk/by-uuid/64a65c41-0a19-4f9c-b68b-8577bc58b2e0 as ext4
dmesg | grep urbackup
[ 6.019669] systemd[1]: Configuration file /lib/systemd/system/urbackupclientbackend.service is marked executable. Please remove executable permission bits. Proceeding anyway.