<html><head><style type="text/css"></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">It was suggested ubuntu-users that, given those erorrs, the disk image my have gotten corrupted. So, I tried regenerating the DomU disk image. Things still don't work, but it's obviously much further along. Here is what's happening after I create the DomU now: - "xm top" show it running at 99% CPU. (even after 1hour+ of waiting) - "xm console" show a backlog, but no interactive prompt. (this is w/ "extra = 'xencons=tty'") - I can't ssh into the DomU Any ideas? Thanks Here is the new "xm console" log: (other logs in the quoted message below.) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [86608.327025] TCP cubic registered [86608.327898] NET: Registered protocol family 1 [86608.328692] Using IPI No-Shortcut mode [86608.329501] XENBUS: Device with no driver: device/console/0 [86608.330579] Freeing unused kernel memory: 200k freed Loading, please wait... Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Begin: Loading essential drivers... ... [86609.048025] AppArmor: AppArmor initialized<5>audit(1196380531.042:2): type=1505 info="AppArmor initialized" pid=934 [86609.073334] fuse init (API version 7.8) [86609.097924] Failure registering capabilities with primary security module. [86609.212967] thermal: Unknown symbol acpi_processor_set_thermal_limit Done. Begin: Running /scripts/init-premount ... Done. Begin: Mounting root file system... ... Begin: Running /scripts/local-top ... Done. Begin: Waiting for root file system... ... Done. Begin: Running /scripts/local-premount ... Done. [86609.967173] kjournald starting. Commit interval 5 seconds [86609.968278] EXT3-fs: mounted filesystem with ordered data mode. Begin: Running /scripts/local-bottom ... Done. Done. Begin: Running /scripts/init-bottom ... Done. * Setting preliminary keymap... [86610.601634] Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console [ OK ] * Setting the system clock ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">----- Original Message ---- From: Allen Fowler <allen.fowler@yahoo.com> To: ubuntu-server@lists.ubuntu.com Sent: Thursday, November 29, 2007 4:43:01 PM Subject: Xen on Ubuntu: DomU hangs on boot <div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><div> Hello, As a newcomer to Linux, I'd like to evaluate it (in the form of Ubuntu Server) as a possible replacement for some half-baked SMB Windows server installs. Anyway, I need a testbed to learn on, so a machine full of Xen DomUs is my first thought. (I once briefly used VMware ESX server... I was rather impressed, but that's not an option here.) Thus, I am trying to install Xen by following the directions at: <a rel="nofollow" target="_blank" href="http://www.howtoforge.com/ubuntu-7.10-server-install-xen-from-ubuntu-repositories">http://www.howtoforge.com/ubuntu-7.10-server-install-xen-from-ubuntu-repositories</a> The physical machine and Dom0 look to be booting fine. However, I can't seem to get any DomU to start. To clarify: After I issue the "xm create" command, no errors are returned, and the "xm list" command shows something like this: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Name ID Mem VCPUs State Time(s) Domain-0 0 239 1 r----- 279.0 xendomu 7 128 1 -b---- 27.5 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ However, I am unable to ssh into the VM, and typing anything at the "xm console" screen yields no response. (Though, the "xm console" does show the scroll back listed below.) After asking around on the ubuntu-users list, it was suggested that I try adding the line "extra = 'xencons=tty'" to my DomU config file. That helped a little... it hangs for a few minutes, but eventually, I get an odd looking "(initramfs)" prompt... not sure what that is, but I guess it's an error/recovery mode. See output below. I am looking to fix the problem, but also understand what makes a Linux server tick under the covers. So, feel free to explain what's really going on here. Any help would be appreciated. Thank you, Allen Various outputs attached below: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ DomU config ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ # # Configuration file for the Xen instance xendomu, created # by xen-tools 3.5 on Fri Nov 23 15:19:59 2007. # # # Kernel + memory size # kernel = '/boot/vmlinuz-2.6.22-14-xen' ramdisk = '/boot/initrd.img-2.6.22-14-xen' memory = '128' #extra = 'xencons=tty' # Tried with/without above. # # Disk device(s). # root = '/dev/hda1 ro' disk = [ 'file:/home/xen/domains/xendomu/disk.img,hda1,w', 'file:/home/xen/domains/xendomu/swap.img,hda2,w' ] # # Hostname # name = 'xendomu' # # Networking # vif = [ 'ip=10.0.0.71' ] # # Behaviour # on_poweroff = 'destroy' on_reboot = 'restart' on_crash = 'restart' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Output of "xm info" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ host : server2 release : 2.6.22-14-xen version : #1 SMP Mon Oct 15 00:35:38 GMT 2007 machine : i686 nr_cpus : 1 nr_nodes : 1 sockets_per_node : 1 cores_per_socket : 1 threads_per_core : 1 cpu_mhz : 996 hw_caps : 0383f9ff:00000000:00000000:00000040 total_memory : 383 free_memory : 0 xen_major : 3 xen_minor : 1 xen_extra : .0 xen_caps : xen-3.0-x86_32p xen_scheduler : credit xen_pagesize : 4096 platform_params : virt_start=0xf5800000 xen_changeset : unavailable cc_compiler : gcc version 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2 cc_compile_by : buildd cc_compile_domain : buildd cc_compile_date : Fri Oct 12 15:08:23 GMT 2007 xend_config_format : 4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ xm dmesg ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [SNIP] (XEN) System RAM: 383MB (392572kB) (XEN) Xen heap: 10MB (10276kB) (XEN) Domain heap initialised: DMA width 32 bits (XEN) PAE enabled, limit: 16 GB (XEN) Local APIC disabled by BIOS -- you can enable it with "lapic" (XEN) Using scheduler: SMP Credit Scheduler (credit) (XEN) Detected 996.791 MHz processor. (XEN) CPU0: Intel Pentium III (Coppermine) stepping 0a (XEN) Mapping cpu 0 to node 255 (XEN) Platform timer is 1.193MHz PIT (XEN) Brought up 1 CPUs (XEN) *** LOADING DOMAIN 0 *** (XEN) Xen kernel: 32-bit, PAE, lsb (XEN) Dom0 kernel: 32-bit, PAE, lsb, paddr 0xc0100000 -> 0xc04c0000 (XEN) PHYSICAL MEMORY ARRANGEMENT: (XEN) Dom0 alloc.: 0000000014000000->0000000016000000 (80008 pages to be allocated) (XEN) VIRTUAL MEMORY ARRANGEMENT: (XEN) Loaded kernel: c0100000->c04c0000 (XEN) Init. ramdisk: c04c0000->c145e800 (XEN) Phys-Mach map: c145f000->c14b5220 (XEN) Start info: c14b6000->c14b646c (XEN) Page tables: c14b7000->c14c8000 (XEN) Boot stack: c14c8000->c14c9000 (XEN) TOTAL: c0000000->c1800000 (XEN) ENTRY ADDRESS: c0100000 (XEN) Dom0 has maximum 1 VCPUs (XEN) Initrd len 0xf9e800, start at 0xc04c0000 (XEN) Scrubbing Free RAM: done. (XEN) Xen trace buffers: disabled (XEN) Std. Loglevel: Errors and warnings (XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings) (XEN) Xen is relinquishing VGA console. (XEN) *** Serial input -> DOM0 (type \047CTRL-a\047 three times to switch input to Xen). ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Initial: xm console xendomu ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [15785.652879] xen_mem: Initialising balloon driver. [15785.660761] Setting mem allocation to 131072 kiB [15785.661268] PCI: System does not support PCI [15785.661371] PCI: System does not support PCI [15785.661489] NET: Registered protocol family 8 [15785.661541] NET: Registered protocol family 20 [15785.662582] NET: Registered protocol family 2 [15785.662767] Time: xen clocksource has been installed. [15785.704611] IP route cache hash table entries: 2048 (order: 1, 8192 bytes) [15785.704753] TCP established hash table entries: 8192 (order: 4, 98304 bytes) [15785.705029] TCP bind hash table entries: 8192 (order: 4, 65536 bytes) [15785.705237] TCP: Hash tables configured (established 8192 bind 8192) [15785.705252] TCP reno registered [15785.734838] checking if image is initramfs... it is [15785.973231] Freeing initrd memory: 15996k freed [15785.974312] audit: initializing netlink socket (disabled) [15785.974572] audit(1196015716.968:1): initialized [15785.980115] VFS: Disk quotas dquot_6.5.1 [15785.980729] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [15785.981277] io scheduler noop registered [15785.981404] io scheduler anticipatory registered [15785.981455] io scheduler deadline registered [15785.981569] io scheduler cfq registered (default) [15786.075774] Real Time Clock Driver v1.12ac [15786.077525] RAMDISK driver initialized: 16 RAM disks of 65536K size 1024 blocksize [15786.078314] input: Macintosh mouse button emulation as /class/input/input0 [15786.078818] xencons_init: Initializing xen vfb; pass xencons=tty to prevent this [15786.079520] Xen virtual console successfully installed as xvc0 [15786.079866] Event-channel device installed. [15786.147564] netfront: Initialising virtual ethernet driver. [15786.149571] PNP: No PS/2 controller found. Probing ports directly. [15786.150636] i8042.c: No controller found. [15786.150879] mice: PS/2 mouse device common for all mice [15786.151222] TCP cubic registered [15786.151276] NET: Registered protocol family 1 [15786.151350] Using IPI No-Shortcut mode [15786.152801] xen-vbd: registered block device major 3 [15786.152855] blkfront: hda1: barriers enabled [15786.155045] blkfront: hda2: barriers enabled [15786.163005] netfront: device eth0 has copying receive path. [15786.244504] XENBUS: Device with no driver: device/console/0 [15786.244975] Freeing unused kernel memory: 200k freed [15786.839976] AppArmor: AppArmor initialized<5>audit(1196015717.836:2): type=1505 info="AppArmor initialized" pid=992 [15786.864141] fuse init (API version 7.8) [15786.887322] Failure registering capabilities with primary security module. [15786.986664] thermal: Unknown symbol acpi_processor_set_thermal_limit ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Here is the "xm console" log... w/ extra = 'xencons=tty' ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [68094.497659] Real Time Clock Driver v1.12ac [68094.500451] RAMDISK driver initialized: 16 RAM disks of 65536K size 1024 blocksize [68094.502157] input: Macintosh mouse button emulation as /class/input/input0 [68094.520344] Xen virtual console successfully installed as tty1 [68094.521939] Event-channel device installed. [68094.592540] netfront: Initialising virtual ethernet driver. [68094.597382] xen-vbd: registered block device major 3 [68094.598283] blkfront: hda1: barriers enabled [68094.602059] blkfront: hda2: barriers enabled [68094.613491] netfront: device eth0 has copying receive path. [68094.619304] PNP: No PS/2 controller found. Probing ports directly. [68094.621198] i8042.c: No controller found. [68094.622258] mice: PS/2 mouse device common for all mice [68094.623631] TCP cubic registered [68094.624593] NET: Registered protocol family 1 [68094.625363] Using IPI No-Shortcut mode [68094.626165] XENBUS: Device with no driver: device/console/0 [68094.627239] Freeing unused kernel memory: 200k freed Loading, please wait... Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Couldnt get a file descriptor referring to the console Begin: Loading essential drivers... ... [68095.347277] AppArmor: AppArmor initialized<5>audit(1196362017.346:2): type=1505 info="AppArmor initialized" pid=934 [68095.373147] fuse init (API version 7.8) [68095.397099] Failure registering capabilities with primary security module. [68095.492666] thermal: Unknown symbol acpi_processor_set_thermal_limit Done. Begin: Running /scripts/init-premount ... Done. Begin: Mounting root file system... ... Begin: Running /scripts/local-top ... Done. Begin: Waiting for root file system... ... [...STOPS FOR A FEW MINUTES......] [... THEN...] Done. /dev/hda1: unknown volume type Begin: Running /scripts/local-premount ... Done. mount: Mounting /dev/hda1 on /root failed: No such device Begin: Running /scripts/local-bottom ... Done. Done. Begin: Running /scripts/init-bottom ... mount: Mounting /root/dev on /dev/.static/dev failed: No such file or directory Done. mount: Mounting /sys on /root/sys failed: No such file or directory mount: Mounting /proc on /root/proc failed: No such file or directory Target filesystem doesn't have /sbin/init BusyBox v1.1.3 (Debian 1:1.1.3-5ubuntu7) Built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs) [... THE PROMPT APPEARS TO WORK...] [... 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