Thus spake Jeff Vian: > > The lv is not active. > Have you tried to activate it? > See the listing in man lvs for the identifying the state, and in man > lvchange for how to activate it. > Something like "lvchange -a y LogVol01" should make it active so you > can then use commands such as mkswap and mount with it. Here's what happens: [root@scylla test]# lvchange -v -a y VolGroup00/LogVol01 Using logical volume(s) on command line Activating logical volume "LogVol01" Found volume group "VolGroup00" Loading VolGroup00-LogVol01 table device-mapper: reload ioctl failed: Invalid argument I checked around some more, and found that device-mapper doesn't have a table for LogVol01: [root@scylla test]# dmsetup table VolGroup00-LogVol05: 0 63373312 linear 9:1 786816 VolGroup00-LogVol04: 0 262144 linear 9:1 64160128 VolGroup00-LogVol03: 0 1179648 linear 9:1 76677504 VolGroup00-LogVol02: 0 12255232 linear 9:1 64422272 VolGroup00-LogVol01: VolGroup00-LogVol00: 0 786432 linear 9:1 384 Er? How did that happen? How do I determine what the table entry it should be? > I assume the volume group is activated. Yes, the volume group is activated. -- J.