USB-Offiste Remote Sync Error

Oct 13, 2025
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Forchheim
www.consato.de
I have a problem on every proxmox backup server that we manage for our customers.
We alway have a proxmox virtual enviroment in combination with a proxmox backup server and USB offisite disks.

There is only one USB offsite disk attached at a time, but proxmox backup server alway tries to sync the files on every USB Offiste disk, even if its not mounted / connected.

Is there a workaround or is it just not possible to configure it that the sync only runs on the connected USB offsite disk.

sorry for my bad grammar.
 
Hi,
there is the possibility to trigger sync jobs when a related removable datastore is mounted, see the run-on-mount flag as descirbed in https://pbs.proxmox.com/docs/managing-remotes.html#sync-jobs.
If you do not configure a schedule (leaving it blank) for the sync job, it will only be executed when the removable datastore is mounted.
 
Hi,
there is the possibility to trigger sync jobs when a related removable datastore is mounted, see the run-on-mount flag as descirbed in https://pbs.proxmox.com/docs/managing-remotes.html#sync-jobs.
If you do not configure a schedule (leaving it blank) for the sync job, it will only be executed when the removable datastore is mounted.
Hello Chris, thank you for your answer. With the flag
Code:
run-on-mount
will the jobs run continuously or will they only run once?
In our case the offsite-disks will be changed weekly.

Best regards
Jan
 
Hello Chris, thank you for your answer. With the flag
Code:
run-on-mount
will the jobs run continuously or will they only run once?
In our case the offsite-disks will be changed weekly.

Best regards
Jan
As stated in the docs, the flag is there to make the job start on mount, so unless the sync job has also a schedule, it will run only once:
If the run-on-mount flag is set, the sync job will be automatically started whenever a relevant removable datastore is mounted. If mounting a removable datastore would start multiple sync jobs, these jobs will be run sequentially in alphabetical order based on their ID.