Re: Expanding root VG issue

Hi Neil, check RHEL-7 Installation Guide, there is a section describing how to add DASDs: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/installation_guide/chap-post-installation-configuration-s390#sect-post-installation-dasds-setting-online-persistently-s390 Also

Re: Expanding root VG issue

I understand now that the PV NAME displayed by pvdisplay is not important. This is on RHEL 7. Here is the story so far. I added a volume to the server at address 10a. I added 010a to dasd.conf. The Linux group added the new volume to the root vg. Upon next reboot, it failed with Buffer I/O