Partition /dev/sdb8 could not be created, thus the 'pvcreate' command failed, thus all following commands creating that logical volume: 2015-10-31 04:08:17 <3> (none)(3139) [libstorage] Disk.cc(checkSystemError):450 cmd:/usr/sbin/parted -s --align=optimal '/dev/sdb' unit cyl mkpart logical ext2 19615 19616 err:Error: Unable to satisfy all constraints on the partition. retcode:1 2015-10-31 04:08:17 <1> (none)(3139) [libstorage] SystemCmd.cc(execute):134 SystemCmd Executing: "/usr/sbin/parted -s --align=optimal '/dev/sdb' unit cyl mkpart logical ext2 19616 19617" Adding Line 1 "Error: You requested a partition from 19616cyl to 19617cyl (sectors 315131040..315147105)." Adding Line 2 "The closest location we can manage is 96104cyl to 96104cyl (sectors 1543923713..1543923713)." This resulted in the first error popup you saw: 2015-10-31 04:08:17 <1> (none)(3139) [Ruby] modules/StorageClients.rb:161 Failure occurred during the following action: Creating volume /dev/sdb8 DISK_CREATE_PARTITION_PARTED_FAILED System error code was: -1007 /usr/sbin/parted -s --align=optimal '/dev/sdb' unit cyl mkpart logical ext2 19615 19615: Error: Unable to satisfy all constraints on the partition. Continue despite the error? ---- Continuing despite this (fatal) error of course did not get you anywhere because that logical volume would have been the one for the root filesystem. It would have made sense to continue if this had been, say, /home or any other filesystem, but not for the root filesystem.