Hi. I have an ibm x3500 server running debian lenny with xen 3.4 hypervisor, linux-2.6.26, adaptec 2400A raid controller and 6GB ram. I''ve been solving problems with xen not being able to use more than 3GB of ram. Eliminating grub2 and being forced to upgrade to xen 3.4, because xen 3.0.3 from etch and xen 3.2 from lenny kept crashing, I use the raid controller only to attach disks to it and use software raid 10 over it. It works fine until I let xen address more than 3070M of ram. The disks on the controller loose all information for partitions and are shown only as /dev/i2o/hd[abcd]. I can''t create new partitions. When I lower the memory to about 3400M of ram, I see the partitions, but the data on the disks get corrupted and finaly, I get segfaults with anything touching those disks. I''ve found only a single similar bug description: http://www.mail-archive.com/linux-scsi@vger.kernel.org/msg11738.html When I boot using only linux, without xen, the controller works fine with 6GB of memory. So it is a problem with xen + linux. Does anyone have any ideas how to resolve this? Thanks for help Martin Kraus _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 19/02/10 04:50 PM, Martin Kraus wrote:> When I boot using only linux, without xen, the controller works fine with 6GB > of memory. So it is a problem with xen + linux. > > Does anyone have any ideas how to resolve this?Have you tried using a newer dom0 kernel? Take a look at http://wiki.xensource.com/xenwiki/XenParavirtOps http://wiki.xensource.com/xenwiki/XenDom0Kernels The former will be the default for new versions of Xen so if you can use it, you might as well :) Jamon _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Fri, Feb 19, 2010 at 05:11:41PM -0500, Jamon Camisso wrote:> On 19/02/10 04:50 PM, Martin Kraus wrote: > >When I boot using only linux, without xen, the controller works fine with 6GB > >of memory. So it is a problem with xen + linux. > > > >Does anyone have any ideas how to resolve this? > > Have you tried using a newer dom0 kernel? Take a look at > http://wiki.xensource.com/xenwiki/XenParavirtOps > http://wiki.xensource.com/xenwiki/XenDom0Kernels > > The former will be the default for new versions of Xen so if you can > use it, you might as well :)I bet there''s no debian kernel package for this kernel release yet. I try not to use compiled things on server, because it just get''s unmanagable. last time I used compiled xen was with 2.6.18 kernel release and I have to admit, it wasn''t really that easy to get it working:) thanks for the links, I''ll do some reading. Getting tired of the battle with xen on this server. all other machines work fine, but this one just gets me one nasty surprise after another. mk _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 19/02/10 05:30 PM, Martin Kraus wrote:> I bet there''s no debian kernel package for this kernel release yet. I try not > to use compiled things on server, because it just get''s unmanagable.That''s true, though if all your servers use the same setup with a compiled kernel, that''s another story..> last time I used compiled xen was with 2.6.18 kernel release and I have to admit, it > wasn''t really that easy to get it working:)It takes a little work, but there''s good documentation on the wiki and in the README on how to build things. Pop into the ##xen irc channel on irc.freenode.net as well if you get stuck, people are pretty helpful there. Jamon _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users