http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1192
Summary: Using lvsnapshot as the physical disk causes kernel OOPS
Product: Xen
Version: 3.0.4
Platform: x86-64
OS/Version: Linux-2.6
Status: NEW
Severity: major
Priority: P2
Component: Guest-OS
AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
ReportedBy: nick.wilkens@xxxxxxxxxxxxxxxx
I created a master installation on a logical volume, masterlv. An lvsnapshot
of the masterlv was created, and called xen09lv. When booting the domU of
xen09lv the system panics. Below are more details:
# uname -r
2.6.18-53.1.14.el5xen
# cat /etc/redhat-release
CentOS release 5 (Final)
# rpm -qa|grep -i xen
xen-libs-3.0.3-41.el5
xen-libs-3.0.3-41.el5
kernel-xen-2.6.18-53.1.14.el5
xen-3.0.3-41.el5
# cat /etc/xen/xen09
name = "xen09"
uuid = "88f56570-0d6c-48c5-94ec-76172346ec09"
maxmem = 128
memory = 128
vcpus = 1
bootloader = "/usr/bin/pygrub"
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
vfb = [ ]
disk = [ "phy:/dev/xenvg/xen09lv,xvda,w" ]
vif = ['mac=00:16:3e:f3:57:a8 bridge=xenbr0', 'mac=00:16:3e:e3:f2:a2,
bridge=xenbr1']
When removing the vif entries from the xen09 config file, the system boots
properly.
# xm create /etc/xen/xen09 -c
Using config file "/etc/xen/xen09".
Started domain xen09
Bootdata ok (command line is ro root=/dev/VolGroup00/LogVol00 console=xvc0)
Linux version 2.6.18-53.1.14.el5xen (mockbuild@xxxxxxxxxxxxxxxxxxx) (gcc
version 4.1.2 20070626 (Red Hat 4.1.2-14)) #1 SMP Wed Mar 5 12:08:17 EST 2008
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000008800000 (usable)
No mptable found.
Built 1 zonelists. Total pages: 34816
Kernel command line: ro root=/dev/VolGroup00/LogVol00 console=xvc0
Initializing CPU#0
PID hash table entries: 1024 (order: 10, 8192 bytes)
Xen reported: 2000.070 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 32768 (order: 6, 262144 bytes)
Inode-cache hash table entries: 16384 (order: 5, 131072 bytes)
Software IO TLB disabled
Memory: 115956k/139264k available (2358k kernel code, 14964k reserved, 1325k
data, 172k init)
Calibrating delay using timer specific routine.. 5002.68 BogoMIPS
(lpj=10005373)
Security Framework v1.0.0 initialized
SELinux: Initializing.
selinux_register_security: Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 256
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 4096K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 2
(SMP-)alternatives turned off
Brought up 1 CPUs
checking if image is initramfs... it is
Grant table initialized
NET: Registered protocol family 16
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 157A0 could not acquire
Mutex [2] [20060707]
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 157A0 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: 2048 (order: 2, 16384 bytes)
TCP established hash table entries: 8192 (order: 5, 131072 bytes)
TCP bind hash table entries: 4096 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 8192 bind 4096)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1205895031.647:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key F8170EB5CF71EF90
- 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
Bootdata ok (command line is ro root=/dev/VolGroup00/LogVol00 console=xvc0)
Linux version 2.6.18-53.1.14.el5xen (mockbuild@xxxxxxxxxxxxxxxxxxx) (gcc
version 4.1.2 20070626 (Red Hat 4.1.2-14)) #1 SMP Wed Mar 5 12:08:17 EST 2008
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 0000000008800000 (usable)
No mptable found.
Built 1 zonelists. Total pages: 34816
Kernel command line: ro root=/dev/VolGroup00/LogVol00 console=xvc0
Initializing CPU#0
PID hash table entries: 1024 (order: 10, 8192 bytes)
Xen reported: 2000.070 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 32768 (order: 6, 262144 bytes)
Inode-cache hash table entries: 16384 (order: 5, 131072 bytes)
Software IO TLB disabled
Memory: 115956k/139264k available (2358k kernel code, 14964k reserved, 1325k
data, 172k init)
Calibrating delay using timer specific routine.. 5002.68 BogoMIPS
(lpj=10005373)
Security Framework v1.0.0 initialized
SELinux: Initializing.
selinux_register_security: Registering secondary module capability
Capability LSM initialized as secondary
Mount-cache hash table entries: 256
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 4096K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 2
(SMP-)alternatives turned off
Brought up 1 CPUs
checking if image is initramfs... it is
Grant table initialized
NET: Registered protocol family 16
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 157A0 could not acquire
Mutex [2] [20060707]
ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread 157A0 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: 2048 (order: 2, 16384 bytes)
TCP established hash table entries: 8192 (order: 5, 131072 bytes)
TCP bind hash table entries: 4096 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 8192 bind 4096)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1205895031.647:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
Initializing Cryptographic API
ksign: Installing public key data
Loading keyring
- Added public key F8170EB5CF71EF90
- 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
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
XENBUS: Device with no driver: device/vbd/51712
XENBUS: Device with no driver: device/vif/0
XENBUS: Device with no driver: device/vif/1
Write protecting the kernel read-only data: 445k
Red Hat nash version 5.1.19.6 starting
Mounting proc filesystem
Mounting sysfs filesystem
Creating /dev
Creating initial device nodes
Setting up hotplug.
Creating block device nodes.
Loading uhci-hcd.ko module
USB Universal Host Controller Interface driver v3.0
Loading ohci-hcd.ko module
Loading ehci-hcd.ko module
Loading jbd.ko module
Loading ext3.ko module
Loading xenblk.ko module
Registering block device major 202
xvda: xvda1 xvda2
Loading dm-mod.ko module
device-mapper: ioctl: 4.11.0-ioctl (2006-09-14) initialised:
dm-devel@xxxxxxxxxx
Loading dm-mirror.ko module
Loading dm-zero.ko module
Loading dm-snapshot.ko module
Scanning and configuring dmraid supported devices
Scanning logical volumes
Reading all physical volumes. This may take a while...
Found volume group "VolGroup00" using metadata type lvm2
Activating logical volumes
2 logical volume(s) in volume group "VolGroup00" now active
Creating root device.
Mounting root filesystem.
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Setting up other filesystems.
Setting up new root fs
no fstab.sys, mounting internal defaults
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
audit(1205895041.760:2): enforcing=1 old_enforcing=0 auid=4294967295
audit(1205895042.680:3): policy loaded auid=4294967295
INIT: version 2.86 booting
Welcome to CentOS release 5 (Final)
Press 'I' to enter interactive startup.
Cannot access the Hardware Clock via any known method.
Use the --debug option to see the details of our search for an access method.
Setting clock (utc): Tue Mar 18 22:50:54 EDT 2008 [ OK ]
Starting udev: [ OK ]
Setting hostname master.dynamic-venture.com: [ OK ]
Setting up Logical Volume Management: 2 logical volume(s) in volume group
"VolGroup00" now active
[ OK ]
Checking filesystems
Checking all file systems.
[/sbin/fsck.ext3 (1) -- /] fsck.ext3 -a /dev/VolGroup00/LogVol00
/dev/VolGroup00/LogVol00: clean, 34030/2450400 files, 386402/2449408 blocks
[/sbin/fsck.ext3 (1) -- /boot] fsck.ext3 -a /dev/xvda1
/boot: clean, 43/26104 files, 23610/104388 blocks
[ OK ]
Remounting root filesystem in read-write mode: [ OK ]
Mounting local filesystems: [ OK ]
Enabling local filesystem quotas: [ OK ]
Enabling /etc/fstab swaps: [ OK ]
INIT: Entering runlevel: 3
Entering non-interactive startup
Starting monitoring for VG VolGroup00: 2 logical volume(s) in volume group
"VolGroup00" monitored
[ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: ----------- [cut here ] --------- [please bite
here ] ---------
Kernel BUG at net/core/dev.c:3298
invalid opcode: 0000 [1] SMP
last sysfs file: /class/net/lo/type
CPU 0
Modules linked in: xennet dm_multipath parport_pc lp parport pcspkr dm_snapshot
dm_zero dm_mirror dm_mod xenblk ext3 jbd ehci_hcd ohci_hcd uhci_hcd
Pid: 9, comm: xenwatch Not tainted 2.6.18-53.1.14.el5xen #1
RIP: e030:[<ffffffff803fc858>] [<ffffffff803fc858>] free_netdev+0x1e/0x3e
RSP: e02b:ffff880007eb7e18 EFLAGS: 00010293
RAX: 0000000000000001 RBX: ffff8800058853cf RCX: 000000018020b2d4
RDX: ffffffffff578000 RSI: 0000000000000000 RDI: ffff880005460000
RBP: ffff8800058853c0 R08: ffff880007eb6000 R09: 0000000000000000
R10: ffff880007eaf320 R11: ffff880007eaf7a0 R12: ffff880005460500
R13: ffff880007ebcc00 R14: 0000000000000005 R15: ffff880005460000
FS: 00002aaaab0166e0(0000) GS:ffffffff80599000(0000) knlGS:0000000000000000
CS: e033 DS: 0000 ES: 0000
Process xenwatch (pid: 9, threadinfo ffff880007eb6000, task ffff880007eaf7a0)
Stack: ffffffff8810f2b7 ffff880007ebcc00 ffff880005460500 ffff8800074757c0
ffff880005461e90 ffffffff88114608 ffff8800058853d1 ffff880000019ce0
0000000100000001 ffff880007eaf7a0
Call Trace:
[<ffffffff8810f2b7>] :xennet:backend_changed+0x81d/0x854
[<ffffffff8039c453>] xenwatch_thread+0x0/0x135
[<ffffffff802940b3>] keventd_create_kthread+0x0/0x61
[<ffffffff8039b8b4>] xenwatch_handle_callback+0x15/0x48
[<ffffffff8039c56f>] xenwatch_thread+0x11c/0x135
[<ffffffff80294276>] autoremove_wake_function+0x0/0x2e
[<ffffffff802940b3>] keventd_create_kthread+0x0/0x61
[<ffffffff8023288d>] kthread+0xfe/0x132
[<ffffffff8025db24>] child_rip+0xa/0x12
[<ffffffff802940b3>] keventd_create_kthread+0x0/0x61
[<ffffffff8023278f>] kthread+0x0/0x132
[<ffffffff8025db1a>] child_rip+0x0/0x12
Code: 0f 0b 68 b2 8d 49 80 c2 e2 0c c7 87 28 03 00 00 04 00 00 00
RIP [<ffffffff803fc858>] free_netdev+0x1e/0x3e
RSP <ffff880007eb7e18>
<0>Kernel panic - not syncing: Fatal exception
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