I manage docker environment on RHEL 7.1 host. Currently I use docker engine v1.9 and what I'd like to do is to upgrade this docker engine to v1.13. My docker engine uses devicemappers as storage, and I noticed that almost 75% of its disk space is used by orphaned volumes, so I would like to take an opportunity and remove old devicemapper and create new one.
So I am looking for a tool which can allow me to operate on devicemappers.
I found tool
dmsetup but this one is missing on my machine (command not found on rhel 7.1).
When I try to look for this with yum:
yum provides dmsetup
I am getting:
Loaded plugins: langpacks, package_upload, product-id, subscription-manager No matches found
Do you know how can I get this tool or maybe you can suggest another tool for managing devicemapper?