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Re: [Xen-users] device/vbd/2049

To: xen-users <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] device/vbd/2049
From: Steven <xen@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 19 Oct 2007 06:35:38 -0600
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Steven wrote:

So, nobody know what these device refer to?
Anyway, I suspect that Xen is looking for devices these before it has loaded xenblk and xennet, so if anyone knows how to instruct mkinitrd to load these modules before xen, let me know.

Here is when it warns about it:

Linux version 2.6.18-8.1.14.el5xen (mockbuild@xxxxxxxxxxxxxxxxxxx) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-52)) #1 SMP Thu
Sep 27 20:59:55 EDT 2007
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000020800000 (usable)
0MB HIGHMEM available.
520MB LOWMEM available.
NX (Execute Disable) protection: active
On node 0 totalpages: 133120
 DMA zone: 133120 pages, LIFO batch:31
ACPI in unprivileged domain disabled
Built 1 zonelists.  Total pages: 133120
Kernel command line:  root=/dev/sda1 ro
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
CPU 0 irqstacks, hard=c071b000 soft=c06fb000
PID hash table entries: 4096 (order: 12, 16384 bytes)
Xen reported: 1793.352 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Software IO TLB disabled
vmalloc area: e1000000-f4ffe000, maxmem 2d7fe000
Memory: 510208k/532480k available (2017k kernel code, 13608k reserved, 824k data, 172k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 4485.25 BogoMIPS (lpj=8970505)
Security Framework v1.0.0 initialized
SELinux:  Initializing.
SELinux:  Starting in permissive mode
selinux_register_security:  Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 512
CPU: After generic identify, caps: 078bc3f1 e1d3fbff 00000000 00000000 00000000 00000000 00000000 CPU: After vendor identify, caps: 078bc3f1 e1d3fbff 00000000 00000000 00000000 00000000 00000000
CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line)
CPU: L2 Cache: 1024K (64 bytes/line)
CPU: After all inits, caps: 078bc3f1 e1d3fbff 00000000 00000410 00000000 00000000 00000000
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
Freeing SMP alternatives: 16k freed
Brought up 1 CPUs
sizeof(vma)=88 bytes
sizeof(page)=32 bytes
sizeof(inode)=340 bytes
sizeof(dentry)=136 bytes
sizeof(ext3inode)=492 bytes
sizeof(buffer_head)=52 bytes
sizeof(skbuff)=172 bytes
checking if image is initramfs... it is
Freeing initrd memory: 3238k freed
Grant table initialized
NET: Registered protocol family 16
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread C06CAAA0 could not acquire Mutex [2] [20060707]
Brought up 1 CPUs
PCI: setting up Xen PCI frontend stub
ACPI: Interpreter disabled.
Linux Plug and Play Support v0.97 (c) Adam Belay
pnp: PnP ACPI: disabled
xen_mem: Initialising balloon driver.
usbcore: registered new driver usbfs
usbcore: registered new driver hub
PCI: System does not support PCI
PCI: System does not support PCI
NetLabel: Initializing
NetLabel:  domain hash size = 128
NetLabel:  protocols = UNLABELED CIPSOv4
NetLabel:  unlabeled traffic allowed by default
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
IA-32 Microcode Update Driver: v1.14-xen <tigran@xxxxxxxxxxx>
audit: initializing netlink socket (disabled)
audit(1192760684.829:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
SELinux:  Registering netfilter hooks
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key 9D84EDE83706E02F
- User ID: CentOS (Kernel Module GPG key)
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
pci_hotplug: PCI Hot Plug PCI Core version: 0.5
rtc: IRQ 8 is not free.
Non-volatile memory driver v1.2
Linux agpgart interface v0.101 (c) Dave Jones
RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize
Xen virtual console successfully installed as xvc0
Event-channel device installed.
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
Probing IDE interface ide0...
Probing IDE interface ide1...
Probing IDE interface ide2...
Probing IDE interface ide3...
Probing IDE interface ide4...
Probing IDE interface ide5...
ide-floppy driver 0.99.newide
usbcore: registered new driver hiddev
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
PNP: No PS/2 controller found. Probing ports directly.
i8042.c: No controller found.
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
TCP bic registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
Using IPI No-Shortcut mode
XENBUS: Device with no driver: device/vbd/2049
XENBUS: Device with no driver: device/vbd/2050
XENBUS: Device with no driver: device/vbd/2051
XENBUS: Device with no driver: device/vbd/2052
XENBUS: Device with no driver: device/vif/0
Freeing unused kernel memory: 172k freed
Write protecting the kernel read-only data: 355k
Registering block device major 8
netfront: Initialising virtual ethernet driver.
netfront: device eth0 has flipping receive path.
USB Universal Host Controller Interface driver v3.0
ohci_hcd: 2005 April 22 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
device-mapper: ioctl: 4.11.0-ioctl (2006-09-14) initialised: dm-devel@xxxxxxxxxx
EXT3-fs: INFO: recovery required on readonly filesystem.
EXT3-fs: write access will be enabled during recovery.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
input: PC Speaker as /class/input/input0
Floppy drive(s): fd0 is unknown type 15 (usb?), fd1 is unknown type 15 (usb?)
Failed to obtain physical IRQ 6
floppy0: no floppy controllers found
lp: driver loaded but no devices found
md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
EXT3 FS on sda1, internal journal
kjournald starting.  Commit interval 5 seconds
EXT3 FS on sda3, internal journal
ext3_orphan_cleanup: deleting unreferenced inode 6101
ext3_orphan_cleanup: deleting unreferenced inode 6100
ext3_orphan_cleanup: deleting unreferenced inode 6099
ext3_orphan_cleanup: deleting unreferenced inode 6098
ext3_orphan_cleanup: deleting unreferenced inode 6097
EXT3-fs: sda3: 5 orphan inodes deleted
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3 FS on sda4, internal journal
EXT3-fs: mounted filesystem with ordered data mode.
Adding 511992k swap on /dev/sda2.  Priority:-1 extents:1 across:511992k
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
IPv6 over IPv4 tunneling driver
eth0: no IPv6 routers present
ip_tables: (C) 2000-2006 Netfilter Core Team
Netfilter messages via NETLINK v0.30.



I wonder what devices are these? I get these error messages but everything works fine, so i asume they are more warnings than anything else but I would rather not have such a warning.

As I said everything runs fine; my question is: where cab I get information about what device this is refering to?

XENBUS: Device with no driver: device/vbd/2049
XENBUS: Device with no driver: device/vbd/2050
XENBUS: Device with no driver: device/vbd/2051
XENBUS: Device with no driver: device/vbd/2052
XENBUS: Device with no driver: device/vif/0

mkinitrd -v -f /boot/initrd-LAB.img `uname -r` --builtin=xenblk --builtin=xennet --omit-raid-modules --omit-lvm-modules --omit-scsi-modules

This initrd image is working but I would like to build one without the warnings, any help would be appreciated.


Steven Dugway

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