You could setup Shuttl and call its copy/freeze scripts manually.
Here's how you do it:
1. Install and configure Shuttl.
2. Start Splunk and make sure Shuttl is running by looking at the Shuttl dashboard.
3. call $SPLUNK_HOME/etc/apps/shuttl/bin/warmToColdScript.sh /absolute/path/to/bucket /absolute/path/to/bucket
And your buckets should now be copied.
And yes, I've written "/absolute/path/to/bucket" twice. That's because usually when you use that script, you want to move the bucket from Splunk's warm to cold directory.
Alternative: Use this modified script, placed in Shuttl's bin directory: https://gist.github.com/petterik/7793825
Call it with a single argument of the bucket's absolute path. Installing, configuring and starting Shuttl is still needed.
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