problems with via controller and msdos

Molle Bestefich molle.bestefich at
Sun May 22 01:06:29 UTC 2005

Alessandro Jacopini wrote:
> I checked again. Actually, the messages in syslog
> generated by the
> dmraid -ay

> kernel: device-mapper: wrong number of arguments to log_c

Since this is the first error, odds are good that this one is the root
cause of the others.  Googling a bit for the above error message
brings up a patch by Heinz Mauelshagen that allows log_c to be called
with only 1 parameter.  Without knowing any better, I'd bet my money
on that being the problem.  So you probably need to upgrade your
device-mapper to the version which has Heinz' patch.

> kernel: device-mapper: : dm-mirror: Error creating mirror dirty log

Whoops, there's a formatting bug in the device-mapper.  Hm.

> kernel:

There's another DM bug.

> kernel: device-mapper: error adding target to table

> Are they more meaningful to you?

No, but at least we've got the right error messages now, so they
should mean something to the developers.  Also, along with the error
messages, you should state the version of the software you're using. 
In this case, copy/paste from 'dmraid --version' and 'dmsetup

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