iostat_parser: allow '-' for device names

Linux device-mapper names show up as 'dm-0', 'dm-1' and so on.
This allows users to store MogileFS files on encrypted devices
using dm-crypt and perhaps other, similar tools.

1 files changed, 3 insertions, 1 deletions

diff --git a/iostat_parser.rl b/iostat_parser.rl
index 27ede88..10ab104 100644
--- a/iostat_parser.rl
+++ b/iostat_parser.rl
@@ -14,7 +14,9 @@
                 }
                 fgoto main;
         };
-        device_name = ([a-zA-Z0-9/]+){1,71} $ {
+
+        # Linux device mapper: dm-N
+        device_name = ([a-zA-Z0-9/\-]+){1,71} $ {
                         if (iostat->dev_tip < (sizeof(iostat->dev)-1))
                                 iostat->dev[iostat->dev_tip++] = fc;
                         };