I'm going to ask a religious question....if you're running under z/VM and (ideally) giving the virtual machine only what it needs, why would you use cio_ignore at all?
Thanks, Sam (217) 862-9227 (office) (602) 327-2134 (cell) -----Original Message----- From: Linux on 390 Port <LINUX-390@VM.MARIST.EDU> On Behalf Of Mark Post Sent: Tuesday, June 11, 2019 8:24 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: Devices for dracut in sles 12 SP4 On 6/10/19 3:52 PM, Marcy Cortes wrote: > Does anyone know how dracut is really supposed to be told about devices? I > was under the impression that all devices were allowed unless explicity in a > cio_ignore when running under z/VM. That's been the default for new installations on z/VM for a while now. However, if a system was upgraded from a version prior to that, the cio_ignore parameter will still be in your kernel parameters, and can cause problems like this. (Or, if someone chose to activate device blacklisting during a new install.) Check /proc/cmdline to see if it's there. If it is, remove it from /boot/grub2/grub.cfg, and /etc/default/grub so that the next time you reboot things should be more reasonable. > At least that's the impression I get reading this > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww. > ibm.com%2Fsupport%2Fknowledgecenter%2Fen%2Flinuxonibm%2Fcom.ibm.linux. > z.lhdd%2Flhdd_r_cio_ignore_cmd.html&data=02%7C01%7CSam.Cohen%40LRS > .COM%7C0a41595b36dc47ae1fa908d6ee813b90%7C62af9ccc42164ae2a1d306614c59 > c315%7C0%7C0%7C636958636152651551&sdata=WvsnQZwpFYclPqprameZpTTDW8 > vaet45KuaGohzP31E%3D&reserved=0 I'm not sure why you would get that impression from that page. The only references I see to z/VM on that page relate to adding devices to the cio_ignore list after booting, and what happens if that device is detached and later re-attached. Mark Post ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww2.marist.edu%2Fhtbin%2Fwlvindex%3FLINUX-390&data=02%7C01%7CSam.Cohen%40LRS.COM%7C0a41595b36dc47ae1fa908d6ee813b90%7C62af9ccc42164ae2a1d306614c59c315%7C0%7C0%7C636958636152661546&sdata=EcmxBcaJl2MmxcM1DJXS%2FtGH5d9XvGC4y5WDA4lcbmI%3D&reserved=0 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www2.marist.edu/htbin/wlvindex?LINUX-390
