First of all, /bin and /sbin have to be on the boot volume. They need to be available during the boot process before other filesystems are mounted.
For /usr, let me refer you to http://linuxvm.org/present/SHARE101/S9343GWa.pdf yes, read-only systems have to be remounted if anything on them changes. If this isn't acceptable, try mounting them "ro" through NFS rather than just linking to a disk and mounting it. Much slower, but others use this all the time. The disadvantage is that the NFS server has to be up all the time. "The Definition of a gentleman is a man who can play the banjo -- and don't!" -Mark Twain Gordon Wolfe, Ph. D. (425)865-5940 VM Technical Services, The Boeing Company > ---------- > From: Cameron, Thomas > Reply To: Linux on 390 Port > Sent: Friday, February 27, 2004 10:04 AM > To: [EMAIL PROTECTED] > Subject: Shared DASD for guests? > > Hi all - > > Let me begin by saying I am still very new to z/VM. I am a Linux guy, not a > mainframe fellow, so bear with me if I ask silly questions. > > We are considering using one chunk of DASD space to install RHEL 3 and then having > multiple guests access /usr, /bin, /sbin and so on read-only. That way we apply > updated RPMs to the "master" all the read-only guests will be updated as well. The > sticking point is that it seems that the read-only guests have to re-access the DASD > before they see the updates that have been applied. > > Am I understanding this correctly? To me this sounds very problematical. In > Linux/Intel, when a new RPM is installed, in most cases it simply involves > restarting the updated service for the new software to be used. In z/Linux it seems > that a simple update of code will require each guest to re-IPL in order to access > the read-only DASD of the "master" image. > > Can someone clarify this for me? > > Thanks! > -- > Thomas Cameron, RHCE, CNE, MCSE, MCT > Assistant Vice President > Linux Design and Engineering > Bank of America > (972) 997-9641 > > The opinions expressed in this message are mine alone and do not necessarily reflect > the opinions of my employer, Bank of America. > >
