The cio_ignore table within Linux (at least in RHEL6.5) is used to restrict access devices, both real and virtual. Being new the Linux on System z, this has become an occasional stumbling block for our Linux admins; when we z/VM sysprogs attach a new virtual or real device and the guest cannot see it immediately.
I'm told that on distributed x86 (at least x86 here), the servers can see all the hardware. Is there a good reason that on Linux on System z the default is to prevent access to all devices unless they are manually removed from the cio_ignore table? I understand that an authorized user could attach a wrong device to a zLinux guest, so let's accept that risk as having been minimized. Are there other reasons to prevent every guest from accessing whatever devices are given to it? Thanks! Mike Walter Aon Corporation The opinions expressed herein are mine alone, not necessarily those of my employer. FWIW, I subscribe in digest mode - so my responses may be slightly delayed. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
