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Re: [Xen-users] Re: XEN 3.1: critical bug: vif init failure after creating 15-17 VMs (XENBUS: Timeout connecting to device: device/vif)



Hi Keir,

Keir Fraser wrote:
Now fixed in the staging tree. The patch (for your dom0 kernel) is also attached to this email.

I have a similar problem with vbds instead of vifs:

(domU:)
XENBUS: Timeout connecting to device: device/vbd/2049 (state 6)
XENBUS: Timeout connecting to device: device/vbd/2052 (state 6)
XENBUS: Timeout connecting to device: device/vbd/2050 (state 6)
XENBUS: Timeout connecting to device: device/vbd/2051 (state 6)


Does your patch also fix this (in theory)? This is a production machine so I'm somewhat reluctant to try things before knowing what they do. I'll attach the full domU output below. This is using a custom kernel without modules (I hate having to deploy modules in all domUs) and kernel level IP auto config (I like having this info in the xen config file).

There are other domUs on this machine with similar configs having no problem at all.



 -- Keir

Regards, Thomas



---8<--[ domU output ]------------------------------------------
[root@diana ~]# xm create vechtstreek_test -c
Using config file "/etc/xen/vechtstreek_test".
Started domain vechtstreek_test
Linux version 2.6.18-tr01 (root@xxxxxxxxxxxxxxxxxx) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-52)) #2 SMP Fri Jul 20 12:14:40 CEST 2007
BIOS-provided physical RAM map:
 Xen: 0000000000000000 - 0000000010800000 (usable)
0MB HIGHMEM available.
264MB LOWMEM available.
NX (Execute Disable) protection: active
Allocating PCI resources starting at 20000000 (gap: 10800000:ef800000)
Detected 3200.282 MHz processor.
Built 1 zonelists.  Total pages: 67584
Kernel command line: root=/dev/sda1 ro ip=131.211.84.207:1.2.3.4:131.211.84.193:255.255.255.192:vechtstreek_test:eth0:off
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 2048 (order: 11, 8192 bytes)
Xen reported: 3200.112 MHz processor.
Console: colour dummy device 80x25
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Software IO TLB disabled
vmalloc area: d1000000-f51fe000, maxmem 2d7fe000
Memory: 251648k/270336k available (3953k kernel code, 10220k reserved, 1648k data, 216k init, 0k highmem)
Checking if this processor honours the WP bit even in supervisor mode... Ok.
Calibrating delay using timer specific routine.. 6403.14 BogoMIPS (lpj=32015708)
Security Framework v1.0.0 initialized
Capability LSM initialized
Mount-cache hash table entries: 512
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 2048K
Checking 'hlt' instruction... OK.
SMP alternatives: switching to UP code
Freeing SMP alternatives: 20k freed
Brought up 1 CPUs
migration_cost=0
checking if image is initramfs... it is
Freeing initrd memory: 588k freed
NET: Registered protocol family 16
Brought up 1 CPUs
xen_mem: Initialising balloon driver.
SCSI subsystem initialized
NET: Registered protocol family 2
IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
TCP established hash table entries: 16384 (order: 5, 131072 bytes)
TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
TCP: Hash tables configured (established 16384 bind 8192)
TCP reno registered
audit: initializing netlink socket (disabled)
audit(1185274517.008:1): initialized
VFS: Disk quotas dquot_6.5.1
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
Installing knfsd (copyright (C) 1996 okir@xxxxxxxxxxxx).
NTFS driver 2.1.27 [Flags: R/O].
fuse init (API version 7.7)
OCFS2 1.3.3
OCFS2 Node Manager 1.3.3
OCFS2 DLM 1.3.3
OCFS2 DLMFS 1.3.3
OCFS2 User DLM kernel interface loaded
seclvl: seclvl_init: seclvl: Failure registering with the kernel.
seclvl: seclvl_init: seclvl: Failure registering with primary security module.
seclvl: Error during initialization: rc = [-22]
Initializing Cryptographic API
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered (default)
rtc: IRQ 8 is not free.
RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize
loop: loaded (max 8 devices)
nbd: registered device at major 43
tun: Universal TUN/TAP device driver, 1.6
tun: (C) 1999-2004 Max Krasnyansky <maxk@xxxxxxxxxxxx>
Xen virtual console successfully installed as tty1
Event-channel device installed.
netfront: Initialising virtual ethernet driver.
Loading iSCSI transport class v1.1-646.<5>iscsi: registered transport (tcp)
register_blkdev: cannot get major 8 for sd
vbd vbd-2049: 19 xlvbd_add at /local/domain/0/backend/vbd/17/2049
i8042.c: No controller found.
mice: PS/2 mouse device common for all mice
register_blkdev: cannot get major 8 for sd
vbd vbd-2049: 19 xlvbd_add at /local/domain/0/backend/vbd/17/2049
device-mapper: ioctl: 4.7.0-ioctl (2006-06-24) initialised: dm-devel@xxxxxxxxxx
device-mapper: multipath: version 1.0.4 loaded
device-mapper: multipath round-robin: version 1.0.0 loaded
register_blkdev: cannot get major 8 for sd
vbd vbd-2052: 19 xlvbd_add at /local/domain/0/backend/vbd/17/2052
dcdbas dcdbas: Dell Systems Management Base Driver (version 5.6.0-2)
netem: version 1.2
u32 classifier
    Performance counters on
    OLD policer on
Netfilter messages via NETLINK v0.30.
IPv4 over IPv4 tunneling driver
register_blkdev: cannot get major 8 for sd
vbd vbd-2052: 19 xlvbd_add at /local/domain/0/backend/vbd/17/2052
GRE over IPv4 tunneling driver
ip_conntrack version 2.4 (2112 buckets, 16896 max) - 228 bytes per conntrack
register_blkdev: cannot get major 8 for sd
vbd vbd-2050: 19 xlvbd_add at /local/domain/0/backend/vbd/17/2050
register_blkdev: cannot get major 8 for sd
vbd vbd-2050: 19 xlvbd_add at /local/domain/0/backend/vbd/17/2050
register_blkdev: cannot get major 8 for sd
vbd vbd-2051: 19 xlvbd_add at /local/domain/0/backend/vbd/17/2051
register_blkdev: cannot get major 8 for sd
vbd vbd-2051: 19 xlvbd_add at /local/domain/0/backend/vbd/17/2051
netfront: device eth0 has copying receive path.
ctnetlink v0.90: registering with nfnetlink.
ip_conntrack_pptp version 3.1 loaded
ip_nat_pptp version 3.0 loaded
ip_tables: (C) 2000-2006 Netfilter Core Team
ClusterIP Version 0.8 loaded successfully
arp_tables: (C) 2002 David S. Miller
IPVS: Registered protocols (TCP, UDP, AH, ESP)
IPVS: Connection hash table configured (size=4096, memory=32Kbytes)
IPVS: ipvs loaded.
IPVS: [rr] scheduler registered.
IPVS: [wrr] scheduler registered.
IPVS: [lc] scheduler registered.
IPVS: [wlc] scheduler registered.
IPVS: [lblc] scheduler registered.
IPVS: [lblcr] scheduler registered.
IPVS: [dh] scheduler registered.
IPVS: [sh] scheduler registered.
IPVS: [sed] scheduler registered.
IPVS: [nq] scheduler registered.
IPVS: ftp: loaded support on port[0] = 21
TCP bic registered
TCP cubic registered
TCP westwood registered
TCP highspeed registered
TCP hybla registered
TCP htcp registered
TCP vegas registered
TCP veno registered
TCP scalable registered
TCP lp registered
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 10
lo: Disabled Privacy Extensions
IPv6 over IPv4 tunneling driver
ip6_tables: (C) 2000-2006 Netfilter Core Team
NET: Registered protocol family 17
NET: Registered protocol family 15
Bridge firewalling registered
Ebtables v2.0 registered
ebt_ulog: not logging via ulog since somebody else already registered for PF_BRIDGE
802.1Q VLAN Support v1.8 Ben Greear <greearb@xxxxxxxxxxxxxxx>
All bugs added by David S. Miller <davem@xxxxxxxxxx>
ieee80211: 802.11 data/management/control stack, git-1.1.13
ieee80211: Copyright (C) 2004-2005 Intel Corporation <jketreno@xxxxxxxxxxxxxxx>
Using IPI No-Shortcut mode
XENBUS: Timeout connecting to device: device/vbd/2049 (state 6)
XENBUS: Timeout connecting to device: device/vbd/2052 (state 6)
XENBUS: Timeout connecting to device: device/vbd/2050 (state 6)
XENBUS: Timeout connecting to device: device/vbd/2051 (state 6)
XENBUS: Device with no driver: device/console/0
IP-Config: Complete:
device=eth0, addr=131.211.84.207, mask=255.255.255.192, gw=131.211.84.193,
     host=vechtstreek_test, domain=, nis-domain=(none),
     bootserver=1.2.3.4, rootserver=1.2.3.4, rootpath=
Freeing unused kernel memory: 216k freed
Red Hat nash version 4.1.18 starting
Mounted /proc filesystem
Mounting sysfs
Creating /dev
Starting udev
Creating root device
Mounting root filesystem
mount: error 6 mounting ext3
mount: error 2 mounting none
Switching to new root
switchroot: mount failed: 22
umount /initrd/dev failed: 2
Kernel panic - not syncing: Attempted to kill init!
--------------------------------------------------------

---8<--[ /etc/xen/vechtstreek_test ]--------------------
kernel = "/boot/vmlinux-stripped"
ramdisk = "/boot/initrd-xenU-tr01"
memory = 256
name = "vechtstreek_test"
vif = [ 'mac=00:00:6C:00:00:0D' ]
disk = [ 'phy:sata/vechtstreek_root,sda1,w',
         'phy:sata/vechtstreek_swap,sda4,w',
         'phy:sata/vechtstreek_var,sda2,w',
         'phy:sata/vechtstreek_home,sda3,w' ]
ip="131.211.84.207"
netmask="255.255.255.192"
gateway="131.211.84.193"
hostname="vechtstreek_test"
root = "/dev/sda1 ro"

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