geotrellis/geotrellis — pull request #866 by hectcastro (2014-08-21 15:46:23+00:00)
Title: Make mkfs.ext3 step idempotent

Before this change set, the `mkfs` step would blindly attempt to format the specified devices without checking if they had already been formatted. Now there is a check that uses `blkid` to determine if the file system is formatted. The `mkfs` step now only attempts to format the device if `blkid` doesn't report `ext3` as the device's file system.