retr0h/cookbook-parted — pull request #4 by shao1555 (2014-02-26 13:16:11+00:00)
Title: mkfs action failed on already formatted as XFS

in XFS partition, `file -sL` command returns below.

```
/dev/xvdf1: SGI XFS filesystem data (blksz 4096, inosz 256, v2 dirs)
```

to handle this response, add "ignore case" option to grep command.