run "check --read-data-subset=x%" after every backup

[rdiaz02]

I'd like to run a "check --read-data-subset=2.5%" after every successful backup, but I don't know how to do it.

I am doing this from a laptop, and have a systemd file that takes care of launching npbackup every 15 minutes. So what I'd like to do is run the check --read-data-subset 2.5% after the backup (and housekeeping) finish.

The standard housekeeping does not seem to accept the "read-data-subset" argument.

Of course, I can run

npbackup-gui --run-as-cli --raw "check --read-data-subset 2.5%"

but that executes the check unconditionally, and that is not what I want.

Concatenating --backup and --raw, like

npbackup-gui --run-as-cli --backup --raw "check --read-data-subset 2.5%"

runs the backup and exits (with success) without running the check.

Using the post-execution commands with

restic --check --read-data-subset 2.5%

fails with the error

WARNING :: Post-execution of command restic check --read-data-subset=2.5% failed with:
using temporary cache in /tmp/restic-check-cache-2628526043
create exclusive lock for repository
Fatal: repository does not exist: unable to open config file: stat xxxxx:_[o_O]_hidden_by_npbackup/config: no such file or directory
Is there a repository at the following location?
xxxxxx:_[o_O]_hidden_by_npbackup

I guess I could build more complex logic into the systemd file, like only run the check --read-data-subset 2.5% if the output from the --backup run does not include the string "No backup necessary". But I think this might be overcomplicating things, and I maybe missing something much simpler in the config. (I've seen #123 where the read-data-subset is used, but I don't see how to apply it here).