It might mean multipath tried to map a device already in use, likely by mounted filesystems. If it is the case try blacklisting this device. Regards, cvaroqui On Wed, May 18, 2005 at 09:47:04AM +0100, gowda_avinash@xxxxxxx wrote: > Hi: > > I am running device mapper version 1.00.21 multipath-tools 0.4.3-pre6, > kernel 2.6.11-rc3. > I am getting the following errors when I run multipath -v2 > > create: 00001826001580CF > [size=2 MB][features="0"][hwhandler="0"] > \_ round-robin 0 [first] > \_ 2:0:0:23 sdaa 65:160 [ready ] > \_ 2:0:1:23 sday 67:32 [ready ] > > device-mapper ioctl cmd 9 failed: Invalid argument > device-mapper ioctl cmd 14 failed: No such device or address > > I am able to do I/O to the device. These messages are found under > lib/ioctl/libdm-iface.c > > Anything that I am missing? > > TIA, > avinash > > -- > > dm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/dm-devel