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 version'. _______________________________________________ Ataraid-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ataraid-list