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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Re : Re : Re : Which kernel may I compile ?
Emmanuel, Do you've got "Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)" ??????? if I understand, you should do something like update-initramfs -u -k 2.6.32.50 update-grub De : Emmanuel COURCELLE <emmanuel.courcelle@xxxxxxxxxxxxxxxx> À : David TECHER <davidtecher@xxxxxxxx> Cc : "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx> Envoyé le : Jeudi 5 Janvier 2012 10h09 Objet : Re: [Xen-users] Re : Re : Which kernel may I compile ? Hi David thanks for your answer. I did exactly as suggested: 1/ download the 2.6.32.50 kernel 2/ cd /usr/src/xen... 3/ cp /boot/config-2.6.32-5-xen-amd64 .config 4/ vi .config and change CONFIG_XEN_MAX_DOMAIN_MEMORY=32 to CONFIG_XEN_MAX_DOMAIN_MEMORY=128 5/ make oldconfig 6/ make, mkinitrd, update-grub2 7/ reboot: ==> reboot with the new kernel alone (ie WITHOUT the xen hypervisor): OK ==> reboot with the xen hypervisor: the xen stage is OK, but after memory scrub the kernel is loaded, and it runs in panic after a couple of seconds, telling that it cannot find root fs VFS block(0,0) not found or something like this (after 1 second the screen blanks and the machine automatically reboots, so it is difficult to read the precise message). So the question is: A/ Do I make something wrong ? B/ If not, do I have a problem with the CONFIG_XEN_MAX_DOMAIN_MEMORY or the xen version ? The server is a Dell Poweredge R710, 2CPUS with 6 cores each, 128Gb memory The xen version is: # xm info host : moxen release : 2.6.32-5-xen-amd64 version : #1 SMP Mon Oct 3 07:53:54 UTC 2011 machine : x86_64 nr_cpus : 12 nr_nodes : 2 cores_per_socket : 6 threads_per_core : 1 cpu_mhz : 2660 hw_caps : bfebfbff:2c100800:00000000:00001f40:029ee3ff:00000000:00000001:00000000 virt_caps : hvm hvm_directio total_memory : 131059 free_memory : 9092 node_to_cpu : node0:0,2,4,6,8,10 node1:1,3,5,7,9,11 node_to_memory : node0:6 node1:9086 node_to_dma32_mem : node0:0 node1:2990 max_node_id : 1 xen_major : 4 xen_minor : 0 xen_extra : .1 xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64 xen_scheduler : credit xen_pagesize : 4096 platform_params : virt_start=0xffff800000000000 xen_changeset : unavailable xen_commandline : dom0_mem=512M dom0_max_vcpus=1 dom0_vcpus_pin loglvl=all guest_loglvl=all cc_compiler : gcc version 4.4.5 (Debian 4.4.5-8) cc_compile_by : waldi cc_compile_domain : debian.org cc_compile_date : Sun Nov 6 09:42:15 CET 2011 xend_config_format : 4 The grub entries are (the first two entries work, the last ends in a panic) menuentry 'Debian GNU/Linux, with Linux 2.6.32.50' --class debian --class gnu-linux --class gnu --class os { insmod part_msdos insmod ext2 set root='(hd2,msdos1)' search --no-floppy --fs-uuid --set 1939b8fd-e856-4762-a6ca-76e0b9be0f36 echo 'Loading Linux 2.6.32.50 ...' linux /boot/vmlinuz-2.6.32.50 root=UUID=1939b8fd-e856-4762-a6ca-76e0b9be0f36 ro quiet echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-2.6.32.50 } menuentry "Xen 4.0" { insmod ext2 set root='(hd1,1)' multiboot /boot/xen-4.0-amd64.gz dom0_mem=512M dom0_max_vcpus=1 dom0_vcpus_pin loglvl=all guest_loglvl=all search --no-floppy --fs-uuid --set 1939b8fd-e856-4762-a6ca-76e0b9be0f36 module /boot/vmlinuz-2.6.32-5-xen-amd64 dummy=dummy root=UUID=1939b8fd-e856-4762-a6ca-76e0b9be0f36 ro module /boot/initrd.img-2.6.32-5-xen-amd64 } menuentry "Xen 4.0 2.6.32.50" { insmod ext2 set root='(hd1,1)' multiboot /boot/xen-4.0-amd64.gz dom0_mem=512M dom0_max_vcpus=1 dom0_vcpus_pin loglvl=all guest_loglvl=all search --no-floppy --fs-uuid --set 1939b8fd-e856-4762-a6ca-76e0b9be0f36 module /boot/vmlinuz-2.6.32.50 dummy=dummy root=UUID=1939b8fd-e856-4762-a6ca-76e0b9be0f36 ro module /boot/initrd.img-2.6.32.50 } I attach to this mail the two configuration files (one provided by Debian, the other is the output of make oldconfig) Thanks again for your help ! -- Emmanuel COURCELLE emmanuel.courcelle@xxxxxxxxxxxxxxxx L.I.P.M. (UMR CNRS-INRA 2594/441) tel (33) 5-61-28-54-50 B.P.52627 - 31326 CASTANET TOLOSAN Cedex - FRANCE _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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