On Mon, Dec 7, 2009 at 4:35 PM, Lucian @ lastdot.org <lucian at lastdot.org>wrote: > On Mon, Dec 7, 2009 at 12:24 PM, Diederick Stoffers > <d.stoffers at gmail.com> wrote: > > [root at localhost ~]# uname -a > > Linux localhost.localdomain 2.6.18-164.6.1.el5xen #1 SMP Tue Nov 3 > 16:48:13 > > EST 2009 x86_64 x86_64 x86_64 GNU/Linux > > > > On 7 dec 2009, at 13:12, Rudi Ahlers wrote: > > > > what kernel are you running? > > > > On Mon, Dec 7, 2009 at 2:05 PM, Diederick Stoffers <d.stoffers at gmail.com > > > > wrote: > > > > Hi, > > > > We have a new 24-core Dell PowerEdge R905 server with 128GB's RAM. The 64 > > > > bits version of Fedora 12 lists the correct amount of 128GB, CentOS only > > > > finds 32GB (and so does Scientific Linux). I would much prefer to use > CentOS > > > > (most of the software we use is specifically designed for CentOS). Does > > > > anyone know what is causing this/how to fix it? > > > > Many Thanks, > > > > Diederick > From: http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Virtualization-en-US/ch-virt-hw-support.html "The Red Hat Enterprise Linux Virtualization kernel does not support more than 32GB of memory for x86_64 systems. If you need to boot the virtualization kernel on systems with more than 32GB of physical memory installed, you must append the kernel command line with mem=32G. This example shows how to enable the proper parameters in the grub.conf file: title Red Hat Enterprise Linux Server (2.6.18-4.elxen) root (hd0, 0) kernel /xen.gz-2.6.18-4-el5 mem=32G module /vmlinuz -2.6.18-4.el5xen ro root=LABEL=/ module /initrd-2.6.18-4.el5xen.img" -- Jake Paulus JakePaulus at gmail.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20091207/768fbddf/attachment-0005.html>