Xen project Mailing List

Re: Re: [Xen-users] Why creating DomU failed (seems it is due to LVM)

To: "Mark Nijmeijer" <mark@xxxxxxxxxxxxx>

From: "Zhang Binbin" <binbinzh@xxxxxxx>

Date: Wed, 13 Dec 2006 10:53:58 +0800

Cc: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>

Delivery-date: Tue, 12 Dec 2006 18:54:15 -0800

List-id: Xen user discussion <xen-users.lists.xensource.com>

In default config, blkfront is built in the kernel. So there is no xenblk.ko in modules. Do I have to make it as a module? Thanks. BTW: This is copied from menuconfig of XenU kernel: [ ] Privileged Guest (domain 0) < > Backend driver support <*> Block-device frontend driver <*> Network-device frontend driver [*] Scrub memory before freeing it to Xen [*] Disable serial port drivers <*> Export Xen attributes in sysfs Xen version compatibility (3.0.2 and later) ---> ======= 2006-12-13 02:39:04 you wrote:======= >you can find the module in >/lib/modules/<kernelversion>/kernel/drivers/xen/blkfront >for me it's here : >/lib/modules/2.6.18-1.2798.fc6xen/kernel/drivers/xen/blkfront/xenblk.ko > >copy that file to /initrd/lib >then add insmod /lib/xenblk.ko to the init file > >re-create the initrd file from your /initrd directory, and change the VM >config to use this initrd, instead of the one in /boot. > > > > >Zhang Binbin wrote: > >>Thanks for your suggestion! >>I changed initrd for DomU, and lvm problem has been resolved. >>but kernel still panic when creating DomU: >> >>================================================================================================ >># xm create domUconfig >>Using config file "dom1_config". >>Started domain Dom1 >>Bootdata ok (command line is root=/dev/hda1,ro) >>Linux version 2.6.16.29-xen (root@xxxxxxxxxxxxxxxxxxxxx) (gcc version 3.4.6 >>20060404 (Red Hat 3.4.6 >> >>-3)) #3 SMP Tue Dec 12 15:59:19 CST 2006 >>BIOS-provided physical RAM map: >> Xen: 0000000000000000 - 0000000010800000 (usable) >>No mptable found. >>Built 1 zonelists >>Kernel command line: root=/dev/hda1,ro >>Initializing CPU#0 >>PID hash table entries: 2048 (order: 11, 65536 bytes) >>Xen reported: 1862.322 MHz processor. >>Dentry cache hash table entries: 65536 (order: 7, 524288 bytes) >>Inode-cache hash table entries: 32768 (order: 6, 262144 bytes) >>Software IO TLB disabled >>Memory: 249944k/270336k available (2000k kernel code, 11868k reserved, 883k >>data, 172k init) >>Calibrating delay using timer specific routine.. 3726.62 BogoMIPS >>(lpj=18633142) >>Security Framework v1.0.0 initialized >>Capability LSM initialized >>Mount-cache hash table entries: 256 >>CPU: L1 I cache: 32K, L1 D cache: 32K >>CPU: L2 cache: 2048K >>CPU: Physical Processor ID: 0 >>CPU: Processor Core ID: 0 >>Brought up 1 CPUs >>migration_cost=0 >>checking if image is initramfs... it is >>Freeing initrd memory: 2141k freed >>DMI not present or invalid. >>Grant table initialized >>NET: Registered protocol family 16 >>Brought up 1 CPUs >>PCI: setting up Xen PCI frontend stub >>ACPI: Subsystem revision 20060127 >>ACPI: Interpreter disabled. >>Linux Plug and Play Support v0.97 (c) Adam Belay >>pnp: PnP ACPI: disabled >>xen_mem: Initialising balloon driver. >>SCSI subsystem initialized >>PCI: System does not support PCI >>PCI: System does not support PCI >>IA-32 Microcode Update Driver: v1.14-xen <tigran@xxxxxxxxxxx> >>IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $ >>audit: initializing netlink socket (disabled) >>audit(1165911995.790:1): initialized >>VFS: Disk quotas dquot_6.5.1 >>Dquot-cache hash table entries: 512 (order 0, 4096 bytes) >>Initializing Cryptographic API >>io scheduler noop registered >>io scheduler anticipatory registered >>io scheduler deadline registered >>io scheduler cfq registered (default) >>rtc: IRQ 8 is not free. >>Non-volatile memory driver v1.2 >>PNP: No PS/2 controller found. Probing ports directly. >>i8042.c: No controller found. >>RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize >>loop: loaded (max 8 devices) >>Xen virtual console successfully installed as tty1 >>Event-channel device installed. >>netfront: Initialising virtual ethernet driver. >>Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 >>ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx >>Registering block device major 3 >>netfront: device eth0 has flipping receive path. >>mice: PS/2 mouse device common for all mice >>md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27 >>md: bitmap version 4.39 >>NET: Registered protocol family 2 >>IP route cache hash table entries: 4096 (order: 3, 32768 bytes) >>TCP established hash table entries: 16384 (order: 6, 262144 bytes) >>TCP bind hash table entries: 16384 (order: 6, 262144 bytes) >>TCP: Hash tables configured (established 16384 bind 16384) >>TCP reno registered >>NET: Registered protocol family 1 >>NET: Registered protocol family 17 >>Red Hat nash version 4.2.1.8 starting >>Mounted /proc filesystem >>Mounting sysfs >>Creating /dev >>Starting udev >>Loading sd_mod.ko module >>Loading libata.ko module >>Loading ahci.ko module >>Loading ata_piix.ko module >>Loading ide-disk.ko module >>Loading dm-mod.ko module >>device-mapper: 4.5.0-ioctl (2005-10-04) initialised: dm-devel@xxxxxxxxxx >>Loading jbd.ko module >>Loading ext3.ko module >>Creating root device >>Mounting root filesystem >>mount: error 6 mounting ext3 >>mount: error 2 mounting none >>Switching to new root >>switchroot: mount failed: 22 >>umount /initrd/dev failed: 2 >>Kernel panic - not syncing: Attempted to kill init! >>================================================================================================ >> >>I decompressed the initrd-xenU, this is init script: >>================================================================================================ >>#!/bin/nash >>mount -t proc /proc /proc >>setquiet >>echo Mounted /proc filesystem >>echo Mounting sysfs >>mount -t sysfs none /sys >>echo Creating /dev >>mount -o mode=0755 -t tmpfs none /dev >>mknod /dev/console c 5 1 >>mknod /dev/null c 1 3 >>mknod /dev/zero c 1 5 >>mkdir /dev/pts >>mkdir /dev/shm >>echo Starting udev >>/sbin/udevstart >>echo -n "/sbin/hotplug" > /proc/sys/kernel/hotplug >>echo "Loading libata.ko module" >>insmod /lib/libata.ko >>echo "Loading ahci.ko module" >>insmod /lib/ahci.ko >>echo "Loading ata_piix.ko module" >>insmod /lib/ata_piix.ko >>echo "Loading dm-mod.ko module" >>insmod /lib/dm-mod.ko >>/sbin/udevstart >>echo Creating root device >>mkrootdev /dev/root >>umount /sys >>echo Mounting root filesystem >>mount -o defaults --ro -t ext3 /dev/root /sysroot >>mount -t tmpfs --bind /dev /sysroot/dev >>echo Switching to new root >>switchroot /sysroot >>umount /initrd/dev >>================================================================================================ >>And there is no xenbk module in /initrd/lib/. >>where can I find it please? >> >>Thanks. >> >>======= 2006-12-12 17:51:41 you wrote:======= >> >> >> >>>>I did figure out the howtos of mkinird and the ramdisk concepts, the >>>>problem is I do not know what to put/modify inside to make it work. >>>>This is very frustrating. >>>> >>>> >>>> >>>Try adding insmod xenbk to the init script in the initrd. You will have >>>to copy that module into the /lib directory of the initrd as well. >>>I believe the fc6 xen kernel has the back end block driver compiled as a >>>module, and because dom0 doesn't need this module, it's not in the dom0 >>>initrd. >>> >>>Greetz, >>> >>>Mark >>> >>> >>>_______________________________________________ >>>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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