Hello, > There's a lot of people using Xen and Debian, how is the best solution > for a stable (production) kernel? (Xen+Lenny) ? Use the 2.6.32-10-xen > sid kernel in production servers?!? i use plain lenny for my dom0s and with 4) you're very near to what i use: 4b) 64-Bit for domUs is possible with 32-Bit dom0 AND 64-Bit hypervisor! Xen: xen-hypervisor-3.2-1-amd64_3.2.1-2_amd64.deb Dom0: linux-image-2.6.26-2-xen-686 (complete 32-bit userland!) DomU: 2.6.18-686 (*) DomU: 2.6.18-amd64 (*) also possible: DomU: linux-image-2.6.26-2-xen-686 (not stable enough for me) DomU: linux-image-2.6.26-2-xen-amd64 (not stable enough for me) DomU: linux-image-2.6.32-4-686 (from testing) DomU: linux-image-2.6.32-4-amd64 (from testing) .. (*) ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/kernel-2.6.18-164.15.1.el5.src.rpm I do NOT install xen-hypervisor-3.2-1-amd64_3.2.1-2_amd64.deb but i do "dpkg -x" and put xen-3.2-1-amd64.gz in /boot/ on my dom0s. I'm running 22 dom0s with this setup, and since linux-image-2.6-xen-686 (2.6.26-20, october 2009) my dom0s are quite stable, like good old 2.6.18 which i used before 2.6.26 lenny dom0 got stable enough for me. On this 22 dom0s there are running 122 domUs and a few domUs with different kernels: Ubuntu hardy xen kernel (64-bit), SLES10 xen kernel (64-bit), RHEL5 xen kernel (64-bit). But mostly i use 2.6.18 32-bit for my domUs. I'm very picky about stability and i have the possibilty to test dom0 and domU kernels on a dev environment with a big load before i use them on production servers. Also my needs are stable live migration, so i can shutdown every single dom0 for maintenance without interrupting the domUs. Furthermore i need online detach and (re-)attach of block devices so i can grow the filesystem of my domUs while they are running. Hope this helps you. -- greetings eMHa
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