[Xen-devel] Re: [Fedora-xen] 2.6.38-rc dom0 kernel and xen 4.1.0

> Just making sure.. you're running Xen 4.1 ?
> The userspace qemu blkback implementation is *only* in Xen 4.1 ..
> And it should get used automatically if dom0 kernel blkback is not available.

Attempt of DomU install env above :-

# xl create -c f14.install
Parsing config file f14.install
Daemon running with PID 3411
                            [    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.35.6-45.fc14.x86_64 (mockbuild@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC) ) #1 SMP Mon Oct 18 23:57:44 UTC 2010
[    0.000000] Command line:
[    0.000000] ACPI in unprivileged domain disabled
[    0.000000] BIOS-provided physical RAM map:
[    0.000000] Xen: 0000000000000000 - 00000000000a0000 (usable)
[    0.000000] Xen: 00000000000a0000 - 0000000000100000 (reserved)
[    0.000000] Xen: 0000000000100000 - 0000000080000000 (usable)
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] DMI not present or invalid.
[    0.000000] No AGP bridge found
[    0.000000] last_pfn = 0x80000 max_arch_pfn = 0x400000000
[    0.000000] init_memory_mapping: 0000000000000000-0000000080000000
[    0.000000] RAMDISK: 01e63000 - 058c0000
[    0.000000] No NUMA configuration found
[    0.000000] Faking a node at 0000000000000000-0000000080000000
[    0.000000] Initmem setup node 0 0000000000000000-0000000080000000
[    0.000000]   NODE_DATA [0000000001e42880 - 0000000001e5687f]
[    0.000000]   bootmap [0000000005cf6000 - 0000000005d05fff] pages 10
[    0.000000] (9/32 early reservations) ==> bootmem [0000000000 - 0080000000]
[    0.000000]   #0 [0005cc3000 - 0005cf6000]   XEN PAGETABLES ==> [0005cc3000 - 0005cf6000]
[    0.000000]   #1 [0001000000 - 0001e42878]    TEXT DATA BSS ==> [0001000000 - 0001e42878]
[    0.000000]   #2 [0001e63000 - 00058c0000]          RAMDISK ==> [0001e63000 - 00058c0000]
[    0.000000]   #3 [00058c0000 - 0005cc3000]   XEN START INFO ==> [00058c0000 - 0005cc3000]
[    0.000000]   #4 [0000001000 - 0000003000]       TRAMPOLINE ==> [0000001000 - 0000003000]
[    0.000000]   #5 [0000003000 - 0000007000]      ACPI WAKEUP ==> [0000003000 - 0000007000]
[    0.000000]   #6 [0000100000 - 00004cd000]          PGTABLE ==> [0000100000 - 00004cd000]
[    0.000000]   #7 [0001e42880 - 0001e56880]        NODE_DATA ==> [0001e42880 - 0001e56880]
[    0.000000]   #8 [0005cf6000 - 0005d06000]          BOOTMAP ==> [0005cf6000 - 0005d06000]
[    0.000000] Zone PFN ranges:
[    0.000000]   DMA      0x00000001 -> 0x00001000
[    0.000000]   DMA32    0x00001000 -> 0x00100000
[    0.000000]   Normal   empty
[    0.000000] Movable zone start PFN for each node
[    0.000000] early_node_map[2] active PFN ranges
[    0.000000]     0: 0x00000001 -> 0x000000a0
[    0.000000]     0: 0x00000100 -> 0x00080000
[    0.000000] SFI: Simple Firmware Interface v0.81 http://simplefirmware.org
[    0.000000] SMP: Allowing 2 CPUs, 0 hotplug CPUs
[    0.000000] No local APIC present
[    0.000000] APIC: disable apic facility
[    0.000000] APIC: switched to apic NOOP
[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 0000000000100000
[    0.000000] Allocating PCI resources starting at 80000000 (gap: 80000000:80000000)
[    0.000000] Booting paravirtualized kernel on Xen
[    0.000000] Xen version: 4.1.0-rc2 (preserve-AD)
[    0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:2 nr_node_ids:1
[    0.000000] PERCPU: Embedded 30 pages/cpu @ffff880005d3c000 s90496 r8192 d24192 u122880
[    0.000000] pcpu-alloc: s90496 r8192 d24192 u122880 alloc=30*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1
[    0.000000] Xen: using vcpu_info placement
[    0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 516044
[    0.000000] Policy zone: DMA32
[    0.000000] Kernel command line:
[    0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)
[    0.000000] Checking aperture...
[    0.000000] No AGP bridge found
[    0.000000] Memory: 1984848k/2097152k available (4548k kernel code, 388k absent, 111916k reserved, 7261k data, 944k init)
[    0.000000] SLUB: Genslabs=14, HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[    0.000000] Hierarchical RCU implementation.
[    0.000000]     RCU dyntick-idle grace-period acceleration is enabled.
[    0.000000]     RCU-based detection of stalled CPUs is disabled.
[    0.000000]     Verbose stalled-CPUs detection is disabled.
[    0.000000] NR_IRQS:16640 nr_irqs:288
[    0.000000] Console: colour dummy device 80x25
[    0.000000] console [tty0] enabled
[    0.000000] console [hvc0] enabled
[    0.000000] allocated 20971520 bytes of page_cgroup
[    0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups
[    0.000000] installing Xen timer for CPU 0
[    0.000000] Detected 2833.096 MHz processor.
[    0.000999] Calibrating delay loop (skipped), value calculated using timer frequency.. 5666.19 BogoMIPS (lpj=2833096)
[    0.000999] pid_max: default: 32768 minimum: 301
[    0.000999] Security Framework initialized
[    0.000999] SELinux: Initializing.
[    0.000999] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)
[    0.001567] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)
[    0.001898] Mount-cache hash table entries: 256
[    0.002028] Initializing cgroup subsys ns
[    0.002043] Initializing cgroup subsys cpuacct
[    0.002052] Initializing cgroup subsys memory
[    0.002074] Initializing cgroup subsys devices
[    0.002081] Initializing cgroup subsys freezer
[    0.002088] Initializing cgroup subsys net_cls
[    0.002094] Initializing cgroup subsys blkio
[    0.002157] CPU: Unsupported number of siblings 4
[    0.002168] Performance Events: unsupported p6 CPU model 23 no PMU driver, software events only.
[    0.002221] SMP alternatives: switching to UP code
[    0.002999] ftrace: converting mcount calls to 0f 1f 44 00 00
[    0.002999] ftrace: allocating 23839 entries in 94 pages
[    0.003348] installing Xen timer for CPU 1
[    0.003388] SMP alternatives: switching to SMP code
[    0.000999] CPU: Unsupported number of siblings 4
[    0.005106] Brought up 2 CPUs
[    0.005207] devtmpfs: initialized
[    0.010172] atomic64 test passed for x86-64 platform with CX8 and with SSE
[    0.010194] Grant table initialized
[    0.029174] Time: 165:165:165 Date: 165/165/65
[    0.029222] NET: Registered protocol family 16
[    0.030089] PCI: Fatal: No config space access function found
[    0.031659] bio: create slab <bio-0> at 0
[    0.032065] ACPI: Interpreter disabled.
[    0.032092] xen_balloon: Initialising balloon driver.
[    0.032092] vgaarb: loaded
[    0.032182] SCSI subsystem initialized
[    0.032301] usbcore: registered new interface driver usbfs
[    0.032301] usbcore: registered new interface driver hub
[    0.033031] usbcore: registered new device driver usb
[    0.033066] PCI: System does not support PCI
[    0.033067] PCI: System does not support PCI
[    0.033195] NetLabel: Initializing
[    0.033202] NetLabel: domain hash size = 128
[    0.033207] NetLabel: protocols = UNLABELED CIPSOv4
[    0.033226] NetLabel: unlabeled traffic allowed by default
[    0.033297] Switching to clocksource xen
[    0.047271] pnp: PnP ACPI: disabled
[    0.049170] NET: Registered protocol family 2
[    0.049343] IP route cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.050611] TCP established hash table entries: 262144 (order: 10, 4194304 bytes)
[    0.052075] TCP bind hash table entries: 65536 (order: 8, 1048576 bytes)
[    0.052444] TCP: Hash tables configured (established 262144 bind 65536)
[    0.052452] TCP reno registered
[    0.052469] UDP hash table entries: 1024 (order: 3, 32768 bytes)
[    0.052500] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)
[    0.052597] NET: Registered protocol family 1
[    0.052677] Trying to unpack rootfs image as initramfs...
[    0.131750] Freeing initrd memory: 59764k freed
[    0.153181] platform rtc_cmos: registered platform RTC device (no PNP device found)
[    0.153659] audit: initializing netlink socket (disabled)
[    0.153686] type=2000 audit(1296672845.495:1): initialized
[    0.162680] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    0.164420] VFS: Disk quotas dquot_6.5.2
[    0.164471] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.164972] msgmni has been set to 3993
[    0.165582] alg: No test for stdrng (krng)
[    0.165656] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[    0.165668] io scheduler noop registered
[    0.165673] io scheduler deadline registered
[    0.165714] io scheduler cfq registered (default)
[    0.165866] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[    0.165901] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[    0.165908] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[    0.165925] pci-stub: invalid id string ""
[    0.166481] Non-volatile memory driver v1.3
[    0.166495] Linux agpgart interface v0.103
[    0.166545] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    0.167961] brd: module loaded
[    0.168604] loop: module loaded
[    0.168732] Fixed MDIO Bus: probed
[    0.168789] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    0.168813] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    0.168832] uhci_hcd: USB Universal Host Controller Interface driver
[    0.168884] PNP: No PS/2 controller found. Probing ports directly.
[    0.169056] mice: PS/2 mouse device common for all mice
[    0.169894] rtc_cmos: probe of rtc_cmos failed with error -16
[    0.169972] device-mapper: uevent: version 1.0.3
[    0.170095] device-mapper: ioctl: 4.19.1-ioctl (2010-10-12) initialised: dm-devel@xxxxxxxxxx
[    0.170221] cpuidle: using governor ladder
[    0.170231] cpuidle: using governor menu
[    0.170489] usbcore: registered new interface driver hiddev
[    0.170509] usbcore: registered new interface driver usbhid
[    0.170515] usbhid: USB HID core driver
[    0.170537] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
[    0.170664] CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use
[    0.170678] nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module option or
[    0.170686] sysctl net.netfilter.nf_conntrack_acct=1 to enable it.
[    0.170750] ip_tables: (C) 2000-2006 Netfilter Core Team
[    0.170770] TCP cubic registered
[    0.170775] Initializing XFRM netlink socket
[    0.170787] NET: Registered protocol family 17
[    0.170915] registered taskstats version 1
[    0.170936] XENBUS: Device with no driver: device/vbd/51712
[    0.170942] XENBUS: Device with no driver: device/vif/0
[    0.170957]   Magic number: 1:252:3141
[    0.170978] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
[    0.170995] Initalizing network drop monitor service
[    0.171173] Freeing unused kernel memory: 944k freed
[    0.171470] Write protecting the kernel read-only data: 10240k
[    0.176107] Freeing unused kernel memory: 1576k freed
[    0.177188] Freeing unused kernel memory: 1836k freed
[9;0][8]
Greetings.
anaconda installer init version 14.22 starting
mounting /proc filesystem... done

(process:1): GLib-CRITICAL **: g_hash_table_lookup_extended: assertion `hash_table != NULL' failed
creating /dev filesystem... done
starting udev...done
mounting /dev/pts (unix98 pty) filesystem... done
mounting /sys filesystem... done

(process:1): GLib-CRITICAL **: g_hash_table_lookup_extended: assertion `hash_table != NULL' failed
anaconda installer init version 14.22 using /dev/hvc0 as console
trying to remount root filesystem read write... done
mounting /tmp as tmpfs... done

(process:1): GLib-CRITICAL **: g_hash_table_lookup_extended: assertion `hash_table != NULL' failed
running install...
running /sbin/loader
detecting hardware...
waiting for hardware to initialize...
detecting hardware...
waiting for hardware to initialize...

Welcome to Fedora for x86_64

    ┌────────────────────────────┤ Retrieving ├────────────────────────────┐
    │                                                                      │
    │ Retrieving /install.img...                                           │
    │                                                                      │
    │                                 100%                                 │
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...                    │
kernel:                                1%                                 ┘
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.186082] Call Trace:t Feb 2 21:54:47 ...
kernel:[ 423.185529] Call Trace:
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.186111] Code: cc 51 41 53 b8 1c 00 00 00 0f 05 41 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 51 41 53 b8 1d 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc c cc cc cc cc cc cc 51 41 53 b8 1d 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.186139] Stack:kvm at Feb 2 21:54:47 ... <F12> next screen
kernel:[ 423.186061] Stack:
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.186139] Call Trace:

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.186139] Code: cc 51 41 53 b8 1c 00 00 00 0f 05 41 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 51 41 53 b8 1d 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.191177] Stack:

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.191198] Call Trace:

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.191228] Code: cc 51 41 53 b8 1c 00 00 00 0f 05 41 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc c cc 51 41 53 b8 1d 00 00 00 0f 25 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.218990] Stack:kvm at Feb 2 21:54:47 ...
kernel:[ 423.192039] Stack:
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.219010] Call Trace:t Feb 2 21:54:47 ...
kernel:[ 423.192060] Call Trace:
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.219059] Code: cc 51 41 53 b8 10 00 00 00 0f 05 41 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 51 41 53 b8 11 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc c cc cc cc cc cc cc 51 41 53 b8 1d 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.221189] Stack:

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.221210] Call Trace:

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.221240] Code: cc 51 41 53 b8 1c 00 00 00 0f 05 41 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc c 51 41 53 b8 1d 00 00 00 0f 65 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.323933] Call Trace:t Feb 2 21:54:47 ...
kernel:[ 423.231207] Stack:
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.323966] Code: cc 51 41 53 b8 1c 00 00 00 0f 05 41 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 51 41 53 b8 1d 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ... 0f 05 41 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc kernel:[ 423.324563] Stack:0 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc c cc cc cc cc cc cc 51 41 53 b8 1d 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.324563] Call Trace:

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.324563] Code: cc 51 41 53 b8 1c 00 00 00 0f 05 41 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 51 41 53 b8 1d 00 00 00 0f 05 <41> 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.328363] Stack:

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.328384] Call Trace:

Message from syslogd@fedora14kvm at Feb 2 21:54:47 ...
kernel:[ 423.328415] Code: cc 51 41 53 b8 1c 00 00 00 0f 05 41 5b 59 c3 cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc c 51 41 53 b8 1d 00 00 00 0f 85 <41> 5b 59 c3 cc cc cc cc cc cc cc cc

Boris.

--- On Sat, 1/29/11, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

From: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Fedora-xen] 2.6.38-rc dom0 kernel and xen 4.1.0-rc2
To: "W. Michael Petullo" <mike@xxxxxxxx>
Cc: xen@xxxxxxxxxxxxxxxxxxxxxxx
Date: Saturday, January 29, 2011, 9:08 AM

On Thu, Jan 27, 2011 at 05:03:57PM -0600, W. Michael Petullo wrote:
> >> Now, the last issue remaining for me is the backend drivers. My
> >> understanding is that, in the absence of backends being accepted
> >> upstream, we can use QEMU-based drivers. This would be acceptable for
> >> our work. Has anyone been using these with Fedora 15?
>
> > In theory the block driver should work in 4.1.0, though I am not
> > sure about the net driver. In practise I have failed so far to get
> > the block driver working so far. This post today
> > http://lists.xensource.com/archives/html/xen-devel/2011-01/msg01847.html
> > talks about what block driver configurations should work.
>
> I have written the following domain config (to try to force the QEMU
> block backend):
>
> kernel   =   '/tmp/openwrt-x86-xen_domu-vmlinuz'
> memory   = 32
> # NOTE: Generated with qemu-img convert -f raw -O qcow2 input.img output.qcow2
> disk    = [ 'tap:qcow2:/tmp/openwrt-x86-xen_domu-rootfs-ext2.qcow2,xvda,r', ]
> vif = [ 'bridge=virbr0' ]
> name    =   '2.6.38-DomU-Test'
> root    =   '/dev/xvda1'
> >>
> When I boot, I get:
>
> [...]
> NET: Registered protocol family 17
> 802.1Q VLAN Support v1.8 Ben Greear <greearb@xxxxxxxxxxxxxxx>
> All bugs added by David S. Miller <davem@xxxxxxxxxx>
> Using IPI No-Shortcut mode
> XENBUS: Waiting for devices to initialise: 295s...290s...285s...280s...
>
> When I try to use:
>
> disk    = [ 'file:/tmp/openwrt-x86-xen_domu-rootfs-ext2.img,xvda,r', ]
>
> I get:
>
> [No boot]
> Error: Device 51712 (vbd) could not be connected. Path closed or removed during hotplug add: backend/vbd/13/51712 state: 1
>

Just making sure.. you're running Xen 4.1 ?
The userspace qemu blkback implementation is *only* in Xen 4.1 ..

And it should get used automatically if dom0 kernel blkback is not available.

-- Pasi

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[Xen-devel] Re: [Fedora-xen] 2.6.38-rc dom0 kernel and xen 4.1.0-rc2