[fedora-virt] First time xen install - Xen DomU runs, but can't find "/dev/root"
G Crowe
gcvirtlist at crowie.net
Wed Oct 16 20:56:16 UTC 2013
I'm trying to get started with Xen and thought I'd do a simple install
Fedora 18 as a DomU under a Fedora 18 Dom0. Unfortunately this is not
working for me.
It appears to boot the kernel fine, but then complains that it can't
find "/dev/root". I presume that this would be a specific root image for
the Fedora installer?
The logs indicate that the kernel command line is empty. Apparently
there should be something in there (maybe "root=/dev/xvda") but I am not
sure how to achieve this. I would have expected virt-install to do this
for me, though.
Can someone please let me know what I am doing wrong? (details of what I
am trying are below).
Also, I had to manually start "xend" to get this far. Is this normal? It
didn't appear in the services in /etc/rc.d/init.d
Thank you
I created a 20GB logical volume /dev/fedora_dhcp1/xen1
I mounted the Fedora 18 installation ISO into /mnt/install (-t iso9660
-o loop,ro)
I created a bridge "brctl addbr br0" (I haven't added any interfaces to
it yet, I plan to sort out the network after getting virtualisation working)
I created the Xen DomU instance using the following command...
[root at dhcp1 ~]# virt-install --paravirt --name xen1 --ram 256 --vcpus 1
-f /dev/fedora_dhcp1/xen1 --network bridge=br0 --location /mnt/install
--graphics none
Starting install...
Retrieving file .treeinfo... | 2.4 kB 00:00:00 !!!
Retrieving file vmlinuz-PAE... | 9.3 MB 00:00:00 !!!
Retrieving file initrd-PAE.img... | 52 MB 00:00:00 !!!
Creating domain... | 0 B 00:00:01
Connected to domain xen1
Escape character is ^] [ 0.000000] Reserving virtual address space
above 0xf5800000
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 3.6.10-4.fc18.i686.PAE (mockbuild@) (gcc
version 4.7.2 20121109 (Red Hat 4.7.2-8) (GCC) ) #1 SMP Tue Dec 11
18:15:08 UTC 2012
[ 0.000000] ACPI in unprivileged domain disabled
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] Xen: [mem 0x0000000000000000-0x000000000009ffff] usable
[ 0.000000] Xen: [mem 0x00000000000a0000-0x00000000000fffff] reserved
[ 0.000000] Xen: [mem 0x0000000000100000-0x00000000107fffff] usable
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] DMI not present or invalid.
[ 0.000000] e820: last_pfn = 0x10800 max_arch_pfn = 0x1000000
[ 0.000000] init_memory_mapping: [mem 0x00000000-0x107fffff]
[ 0.000000] RAMDISK: [mem 0x0102f000-0x02a6cfff]
[ 0.000000] 0MB HIGHMEM available.
[ 0.000000] 264MB LOWMEM available.
[ 0.000000] mapped low ram: 0 - 10800000
[ 0.000000] low ram: 0 - 10800000
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x00010000-0x00ffffff]
[ 0.000000] Normal [mem 0x01000000-0x107fffff]
[ 0.000000] HighMem empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x00010000-0x0009ffff]
[ 0.000000] node 0: [mem 0x00100000-0x107fffff]
[ 0.000000] Using APIC driver default
[ 0.000000] SFI: Simple Firmware Interface v0.81
http://simplefirmware.org
[ 0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[ 0.000000] Local APIC disabled by BIOS -- you can enable it with
"lapic"
[ 0.000000] APIC: disable apic facility
[ 0.000000] APIC: switched to apic NOOP
[ 0.000000] PM: Registered nosave memory: 00000000000a0000 -
0000000000100000
[ 0.000000] e820: [mem 0x10800000-0xffffffff] available for PCI devices
[ 0.000000] Booting paravirtualized kernel on Xen
[ 0.000000] Xen version: 4.2.2 (preserve-AD)
[ 0.000000] setup_percpu: NR_CPUS:32 nr_cpumask_bits:32 nr_cpu_ids:1
nr_node_ids:1
[ 0.000000] PERCPU: Embedded 14 pages/cpu @cfdde000 s34880 r0 d22464
u57344
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 66944
[ 0.000000] Kernel command line:
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144
bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072
bytes)
[ 0.000000] __ex_table already sorted, skipping sort
[ 0.000000] Initializing CPU#0
[ 0.000000] allocated 540544 bytes of page_cgroup
[ 0.000000] please try 'cgroup_disable=memory' option if you don't
want memory cgroups
[ 0.000000] Initializing HighMem for node 0 (00000000:00000000)
[ 0.000000] Memory: 220784k/270336k available (5639k kernel code,
49104k reserved, 2745k data, 656k init, 0k highmem)
[ 0.000000] virtual kernel memory layout:
[ 0.000000] fixmap : 0xf5296000 - 0xf57ff000 (5540 kB)
[ 0.000000] pkmap : 0xf4e00000 - 0xf5000000 (2048 kB)
[ 0.000000] vmalloc : 0xd1000000 - 0xf4dfe000 ( 573 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xd0800000 ( 264 MB)
[ 0.000000] .init : 0xc0c31000 - 0xc0cd5000 ( 656 kB)
[ 0.000000] .data : 0xc0981f81 - 0xc0c30640 (2745 kB)
[ 0.000000] .text : 0xc0400000 - 0xc0981f81 (5639 kB)
[ 0.000000] SLUB: Genslabs=15, HWalign=128, Order=0-3, MinObjects=0,
CPUs=1, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU restricting CPUs from NR_CPUS=32 to nr_cpu_ids=1.
[ 0.000000] NR_IRQS:2304 nr_irqs:256 16
[ 0.000000] Console: colour dummy device 80x25
[ 0.000000] console [tty0] enabled
[ 0.000000] console [hvc0] enabled
[ 0.000000] installing Xen timer for CPU 0
[ 0.000000] tsc: Detected 3192.140 MHz processor
[ 0.000999] Calibrating delay loop (skipped), value calculated using
timer frequency.. 6384.28 BogoMIPS (lpj=3192140)
[ 0.000999] pid_max: default: 32768 minimum: 301
[ 0.000999] Security Framework initialized
[ 0.000999] SELinux: Initializing.
[ 0.000999] Mount-cache hash table entries: 512
[ 0.000999] Initializing cgroup subsys cpuacct
[ 0.000999] Initializing cgroup subsys memory
[ 0.000999] Initializing cgroup subsys devices
[ 0.000999] Initializing cgroup subsys freezer
[ 0.000999] Initializing cgroup subsys net_cls
[ 0.000999] Initializing cgroup subsys blkio
[ 0.000999] Initializing cgroup subsys perf_event
[ 0.000999] CPU: Physical Processor ID: 0
[ 0.000999] CPU: Processor Core ID: 0
[ 0.000999] Last level iTLB entries: 4KB 64, 2MB 64, 4MB 64
[ 0.000999] Last level dTLB entries: 4KB 64, 2MB 0, 4MB 64
[ 0.000999] tlb_flushall_shift is 0x6
[ 0.001032] SMP alternatives: switching to UP code
[ 0.081199] Freeing SMP alternatives: 24k freed
[ 0.081250] ftrace: allocating 23058 entries in 46 pages
[ 0.090144] Performance Events: unsupported Netburst CPU model 4 no
PMU driver, software events only.
[ 0.091214] NMI watchdog: disabled (cpu0): hardware events not enabled
[ 0.091321] Brought up 1 CPUs
[ 0.091630] devtmpfs: initialized
[ 0.093188] atomic64 test passed for i586+ platform with CX8 and with
SSE
[ 0.093282] Grant tables using version 2 layout.
[ 0.093359] Grant table initialized
[ 0.111982] RTC time: 165:165:165, date: 165/165/65
[ 0.112096] NET: Registered protocol family 16
[ 0.113006] PCI: setting up Xen PCI frontend stub
[ 0.114351] bio: create slab <bio-0> at 0
[ 0.114467] ACPI: Interpreter disabled.
[ 0.114509] xen/balloon: Initialising balloon driver.
[ 0.116027] xen-balloon: Initialising balloon driver.
[ 0.116153] vgaarb: loaded
[ 0.116362] SCSI subsystem initialized
[ 0.116594] usbcore: registered new interface driver usbfs
[ 0.116620] usbcore: registered new interface driver hub
[ 0.117036] usbcore: registered new device driver usb
[ 0.117254] PCI: System does not support PCI
[ 0.117271] PCI: System does not support PCI
[ 0.117461] NetLabel: Initializing
[ 0.117473] NetLabel: domain hash size = 128
[ 0.117481] NetLabel: protocols = UNLABELED CIPSOv4
[ 0.117501] NetLabel: unlabeled traffic allowed by default
[ 0.117528] Switching to clocksource xen
[ 0.128867] pnp: PnP ACPI: disabled
[ 0.131836] NET: Registered protocol family 2
[ 0.132040] TCP established hash table entries: 16384 (order: 5,
131072 bytes)
[ 0.132148] TCP bind hash table entries: 16384 (order: 5, 131072 bytes)
[ 0.132223] TCP: Hash tables configured (established 16384 bind 16384)
[ 0.132256] TCP: reno registered
[ 0.132266] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.132280] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.132359] NET: Registered protocol family 1
[ 0.132609] Unpacking initramfs...
[ 5.400424] Freeing initrd memory: 26872k freed
[ 5.420100] platform rtc_cmos: registered platform RTC device (no PNP
device found)
[ 5.420423] apm: BIOS not found.
[ 5.420790] Initialise module verification
[ 5.420887] audit: initializing netlink socket (disabled)
[ 5.420926] type=2000 audit(1381867979.607:1): initialized
[ 5.443018] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[ 5.445007] VFS: Disk quotas dquot_6.5.2
[ 5.445162] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 5.445893] msgmni has been set to 483
[ 5.447183] alg: No test for stdrng (krng)
[ 5.447213] NET: Registered protocol family 38
[ 5.447231] Key type asymmetric registered
[ 5.447245] Asymmetric key parser 'x509' registered
[ 5.447349] Block layer SCSI generic (bsg) driver version 0.4 loaded
(major 252)
[ 5.447457] io scheduler noop registered
[ 5.447476] io scheduler deadline registered
[ 5.447512] io scheduler cfq registered (default)
[ 5.447736] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[ 5.447789] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[ 5.447805] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 5.448701] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 5.449418] Non-volatile memory driver v1.3
[ 5.449436] Linux agpgart interface v0.103
[ 5.450770] loop: module loaded
[ 5.451003] libphy: Fixed MDIO Bus: probed
[ 5.451195] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 5.451245] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 5.451283] uhci_hcd: USB Universal Host Controller Interface driver
[ 5.451406] usbcore: registered new interface driver usbserial
[ 5.451447] usbcore: registered new interface driver usbserial_generic
[ 5.451483] USB Serial support registered for generic
[ 5.451500] usbserial: USB Serial Driver core
[ 5.451563] i8042: PNP: No PS/2 controller found. Probing ports
directly.
[ 5.452551] mousedev: PS/2 mouse device common for all mice
[ 5.512978] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[ 5.513129] rtc_cmos: probe of rtc_cmos failed with error -38
[ 5.513270] device-mapper: uevent: version 1.0.3
[ 5.513381] device-mapper: ioctl: 4.23.0-ioctl (2012-07-25)
initialised: dm-devel at redhat.com
[ 5.513464] EFI Variables Facility v0.08 2004-May-17
[ 5.513641] usbcore: registered new interface driver usbhid
[ 5.513652] usbhid: USB HID core driver
[ 5.513686] drop_monitor: Initializing network drop monitor service
[ 5.513818] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 5.513897] TCP: cubic registered
[ 5.513907] Initializing XFRM netlink socket
[ 5.514097] NET: Registered protocol family 10
[ 5.514332] mip6: Mobile IPv6
[ 5.514343] NET: Registered protocol family 17
[ 5.514370] Using IPI No-Shortcut mode
[ 5.514529] Loading module verification certificates
[ 5.519112] MODSIGN: Loaded cert 'Fedora kernel signing key:
de2965de66714570abd7e5852342fe03dd0c1ba7'
[ 5.519152] registered taskstats version 1
[ 5.519178] XENBUS: Device with no driver: device/vbd/51712
[ 5.519189] XENBUS: Device with no driver: device/vif/0
[ 5.519272] Magic number: 1:252:3141
[ 5.519319] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[ 5.519873] Freeing unused kernel memory: 656k freed
[ 5.523151] Write protecting the kernel text: 5640k
[ 5.524299] Write protecting the kernel read-only data: 2212k
[ 5.524315] NX-protecting the kernel data: 4600k
[ 5.533912] systemd[1]: systemd 195 running in system mode. (+PAM
+LIBWRAP +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ;
fedora)
[ 5.534049] systemd[1]: Running in initial RAM disk.
Welcome to Fedora 18 (Spherical Cow) dracut-024-18.git20130102.fc18
(Initramfs)!
[ 5.534462] systemd[1]: No hostname configured.
[ 5.534488] systemd[1]: Set hostname to <localhost>.
[ 5.534651] systemd[1]: Initializing machine ID from random generator.
[ 5.561666] systemd[1]: Starting Encrypted Volumes.
[ OK ] Reached target Encrypted Volumes.
[ 5.601607] systemd[1]: Reached target Encrypted Volumes.
[ 5.601835] systemd[1]: Starting udev Kernel Socket.
[ OK ] Listening on udev Kernel Socket.
[ 5.602206] systemd[1]: Listening on udev Kernel Socket.
[ 5.602403] systemd[1]: Starting udev Control Socket.
[ OK ] Listening on udev Control Socket.
[ 5.602748] systemd[1]: Listening on udev Control Socket.
[ 5.602819] systemd[1]: Starting Journal Socket.
[ OK ] Listening on Journal Socket.
[ 5.603217] systemd[1]: Listening on Journal Socket.
[ 5.603297] systemd[1]: Starting dracut cmdline hook...
Starting dracut cmdline hook...
[ 5.605425] systemd[1]: Started Load Kernel Modules.
[ 5.605554] systemd[1]: Starting Journal Service...
Starting Journal Service...
[ OK ] Started Journal Service.
[ 5.648995] systemd[1]: Started Journal Service.
[ 5.651273] systemd[1]: Starting Sockets.
[ OK ] Reached target Sockets.
[ 5.651494] systemd[1]: Reached target Sockets.
[ 5.651570] systemd[1]: Starting Swap.
[ OK ] Reached target Swap.
[ 5.651769] systemd[1]: Reached target Swap.
[ 5.651850] systemd[1]: Starting Local File Systems.
[ OK ] Reached target Local File Systems.
[ 5.652027] systemd[1]: Reached target Local File Systems.
[ 6.009250] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 6.009278] EDD information not available.
[ OK ] Started dracut cmdline hook.
Starting Setup Virtual Console...
Starting dracut pre-udev hook...
[ OK ] Started Setup Virtual Console.
[ OK ] Reached target System Initialization.
[ 6.726690] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 6.737807] Loading iSCSI transport class v2.0-870.
[ 6.754446] iscsi: registered transport (tcp)
[ 6.764264] alua: device handler registered
[ 6.773860] emc: device handler registered
[ 6.783584] hp_sw: device handler registered
[ 6.793520] rdac: device handler registered
[ 6.805629] Floppy drive(s): fd0 is unknown type 15 (usb?), fd1 is
unknown type 15 (usb?)
[ 6.805674] floppy0: Unable to grab IRQ6 for the floppy driver
[ 6.816022] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 6.816054] EDD information not available.
[ 6.830877] No iBFT detected.
[ 6.840605] md: raid0 personality registered for level 0
[ 6.852284] md: raid1 personality registered for level 1
[ 6.862087] async_tx: api initialized (async)
[ 6.867605] xor: automatically using best checksumming function:
[ 6.877077] pIII_sse : 1932.000 MB/sec
[ 6.905090] raid6: mmxx1 1863 MB/s
[ 6.922093] raid6: mmxx2 2136 MB/s
[ 6.939094] raid6: sse1x1 1066 MB/s
[ 6.956097] raid6: sse1x2 2078 MB/s
[ 6.973082] raid6: sse2x1 2164 MB/s
[ 6.990076] raid6: sse2x2 3160 MB/s
[ 6.990093] raid6: using algorithm sse2x2 (3160 MB/s)
[ 6.990109] raid6: using intx1 recovery algorithm
[ 7.016396] md: raid6 personality registered for level 6
[ 7.016421] md: raid5 personality registered for level 5
[ 7.016438] md: raid4 personality registered for level 4
[ 7.037861] md: raid10 personality registered for level 10
[ 7.048264] md: linear personality registered for level -1
[ 7.076403] device-mapper: multipath: version 1.5.0 loaded
[ 7.086880] device-mapper: multipath round-robin: version 1.0.0 loaded
[ 7.229246] RPC: Registered named UNIX socket transport module.
[ 7.229270] RPC: Registered udp transport module.
[ 7.229279] RPC: Registered tcp transport module.
[ 7.229287] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ OK ] Started dracut pre-udev hook.
Starting udev Kernel Device Manager...
[ OK ] Started udev Kernel Device Manager.
Starting dracut pre-trigger hook...
[ 7.560135] systemd-udevd[225]: starting version 195
[ OK ] Started dracut pre-trigger hook.
Starting udev Coldplug all Devices...
[ OK ] Started udev Coldplug all Devices.
Starting Show Plymouth Boot Screen...
Starting dracut initqueue hook...
[ 8.228185] Disabling lock debugging due to kernel taint
[ 8.230621] Initialising Xen virtual ethernet driver.
[ 8.263474] blkfront: xvda: flush diskcache: enabled
[ 8.293282] xvda: unknown partition table
[ OK ] Started Show Plymouth Boot Screen.
[ OK ] Reached target Basic System.
dracut-initqueue[278]: Warning: Could not boot.
[ OK ] Started Show Plymouth Boot Screen.
[ OK ] Reached target Basic System.
dracut-initqueue[278]: Warning: Could not boot.
dracut-initqueue[278]: Warning: /dev/root does not exist
Entering emergency mode. Exit the shell to continue.
Type "journalctl" to view system logs.
dracut:/#
dracut:/# cat /proc/cmdline
dracut:/#
Entering emergency mode. Exit the shell to continue.
Type "journalctl" to view system logs.
dracut:/#
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