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Snapshot an existing volume, attached to an instance:
Code Block $ openstack snapshot create --name <snapshot_name> --force <volume_name>
Note Note about volume snapshots: Notice the use of the --force switch when taking a snapshot of an attached volume; the snapshot will work and not fail, however if there are open files being actively written to the validity of the data being cloned cannot be guaranteed.
Installing command-line tools (OS X)
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