But that's not what the OP asked about. He asked about a shared read-only root file system. He wasn't asking about sharing the other parts of the file system. Your root file system only needs to be about 15MB, not 100MB or 1GB. Trying to share that specifically isn't worth the effort. Sharing the other parts would be.
Mark Post -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Alejandro Leyva Rabinovich Sent: Thursday, April 01, 2004 3:13 PM To: [EMAIL PROTECTED] Subject: Re: Sharing root mdisk with SLES 8.0 We are developing this. This week we have plans to take into production. Right now, the benefits we have seen justify the pain involved. We reduced the size of a linux vm from 500 mb or 1 gb to 100 mb, the time used to create a linux vm is significantly reduced too. The administration is really simplified, now we manage standard versions (apache, postgres, lvm, perl, etc). The time involved in upgrading them also reduced. The time and resources to backup and restore linux vm images get reduced too. And finally, the pain involved isnt so great, we just installed a linux vm, compiled and installed the packages that we need (postgres 7.4, apache 1.3.29, perl 5.8, etc), then copied the non-standard directories (etc, var, home, root, etc), modified /etc/init.d/checkroot.sh (we are using debian) to do a bind mount with those directories, and now we give 150 cyl to a vm, copy the guestvol image, modify the hostname, interfaces, etc (with a script) and voila, we have a running linux vm in a couple of minutes. We've based our work in the presentation from William Scully (http://linuxvm.org/Presentations/misc/basevol.html), but we dont use regina and some other things, we have simplified the procedure a lot. On Thu, 1 Apr 2004, Post, Mark K wrote: > Carlos, > > I don't know of anyone who's really spent any time trying to do this. > The benefit you would gain from it (saving ~15MB per instance) really > isn't that big. Especially compared to the pain involved. > > > Mark Post > > -----Original Message----- > From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of > Carlos Romero-Martin > Sent: Thursday, April 01, 2004 1:17 PM > To: [EMAIL PROTECTED] > Subject: Sharing root mdisk with SLES 8.0 > > > Hello all, > I probe to sharing my mdisk root in read only with others server but > when load Linux (IPL) I receive input output errors because the root > dasd is not in read write mode. > Have you any method or procedure to sharing between severals servers Thanks > A+ > -- Alejandro Leyva Rabinovich. Jefe de la Unidad Departamental de Soporte Ticnico (Administracisn de Mainframe). Direccisn General de Informatica. Secretarma de Finanzas. Gobierno del Distrito Federal. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
