Strange device name for JMB RAID

Mark Junker mjscod at
Thu Nov 9 20:22:12 UTC 2006


I have a Gigabyte mainboard with a JMicron controller. It gets
recognized by dmraid without problems but it creates strange device names.

Here's the directory listing:

crw-rw---- 1 root root  10, 63 2006-11-07 08:39 control
brw-rw---- 1 root disk 254,  0 2006-11-09 20:48 jmicron_JRAID           ^A
brw-rw---- 1 root disk 254,  1 2006-11-07 07:39 Ubuntu-root

And this is the output of "dmraid -tay":

jmicron_JRAID           ^A: 0 312541184 mirror core 2 131072 nosync 2
/dev/sdb 0 /dev/sdc 0
jmicron_JRAID           ^A1: 0 312528447 linear
/dev/mapper/jmicron_JRAID           ^A 63

As you can see, the device name contains spaces and a ^A (0x01) at the
end of the device name which may cause problems when FDISK tries to sync
the devices using ioctl calls. The device for the partition doesn't get
created too.

Any idea what's the problem?

The output of "uname -a":

Linux mjcoder 2.6.19-rc2-g4d99bfac-dirty #1 SMP PREEMPT Tue Oct 17
11:45:46 CEST 2006 x86_64 GNU/Linux

Mark Junker

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