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[Xen-users] virtual machines stopped working

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] virtual machines stopped working
From: benedict dcunha <sylvan.dcunha@xxxxxxxxx>
Date: Sat, 1 Jan 2011 19:09:49 +0300
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Dear All,

I am new to xen and recently implemented it.
i had some issues initially but googling arround managed to clear them.

now I have 2 virtual machines on my xen domains

one is windows 2003 and other windows2008

both the virtual machines were working fine

recently we had a change in our network . i mean we rearanged the vlans so the linux host server which runs xen was moved to another vlan
then i fould that i could not ping the linux xen host . on further investigations i fould that there was another file created for my ethernet device
ifcfg-eth1.bak and also ifcfg-eth1 existed. the ifcfg-eth0 existed as before

the right config for my eth1 was there in ifcfg-eth1.bak file so i renamed the ifcfg-eth1.bak to ifcfg-eth1 and did a network service restart and then found that i could reach the xen host server . but fould that one of my virtual server was shut

i tried to restart it in virt-manager but it gave a error although the other virtual machine was running

so i tried to restart my linix xen host server and then found that the virtual server which was running also had not started .

so i tried to start it and it would not start and after long time gives error

here below i paste the error message

googling arround did not lead me to any possible solution

really would apprecite if any guys out there would advice and help

thanks and regards

simon

-----------------------------
/var/messages log....

Jan 1 14:51:35 xenserver kernel: device vif19.0 left promiscuous mode
Jan 1 14:51:35 xenserver kernel: type=1700 audit(1293882695.424:69): dev=vif19.0 prom=0 old_prom=256 auid=4294967295 ses=4294967295
Jan 1 14:51:35 xenserver kernel: xenbr1: port 4(vif19.0) entering disabled state
Jan 1 14:51:36 xenserver avahi-daemon[3890]: Interface tap0.IPv6 no longer relevant for mDNS.
Jan 1 14:51:36 xenserver avahi-daemon[3890]: Leaving mDNS multicast group on interface tap0.IPv6 with address fe80::9cab:81ff:fec4:b1e8.
Jan 1 14:51:36 xenserver avahi-daemon[3890]: Withdrawing address record for fe80::9cab:81ff:fec4:b1e8 on tap0.
Jan 1 14:51:36 xenserver kernel: xenbr1: port 3(tap0) entering disabled state
Jan 1 14:51:36 xenserver kernel: device tap0 left promiscuous mode
Jan 1 14:51:36 xenserver kernel: type=1700 audit(1293882696.060:70): dev=tap0 prom=0 old_prom=256 auid=4294967295 ses=4294967295
Jan 1 14:51:36 xenserver kernel: xenbr1: port 3(tap0) entering disabled state

------------------------

part of /var/log/xen/xend.log

VmError: Device 5632 (vbd) could not be connected. Hotplug scripts not working.
[2011-01-01 14:51:35 xend.XendDomainInfo 634] DEBUG (XendDomainInfo:2189) XendDomainInfo.destroy: domid=19
[2011-01-01 14:51:35 xend.XendDomainInfo 634] INFO (XendDomainInfo:2330) Dev 768 still active, looping...
[2011-01-01 14:51:35 xend.XendDomainInfo 634] INFO (XendDomainInfo:2330) Dev 5632 still active, looping...
[2011-01-01 14:51:35 xend.XendDomainInfo 634] INFO (XendDomainInfo:2330) Dev 768 still active, looping...
[2011-01-01 14:51:35 xend.XendDomainInfo 634] INFO (XendDomainInfo:2330) Dev 5632 still active, looping...
[2011-01-01 14:51:35 xend.XendDomainInfo 634] INFO (XendDomainInfo:2330) Dev 768 still active, looping...
[2011-01-01 14:51:35 xend.XendDomainInfo 634] INFO (XendDomainInfo:2330) Dev 5632 still active, looping...
[2011-01-01 14:51:36 xend.XendDomainInfo 634] DEBUG (XendDomainInfo:2114) UUID Created: True
[2011-01-01 14:51:36 xend.XendDomainInfo 634] DEBUG (XendDomainInfo:2115) Devices to release: [], domid = 19
[2011-01-01 14:51:36 xend.XendDomainInfo 634] DEBUG (XendDomainInfo:2127) Releasing PVFB backend devices ...
[2011-01-01 14:51:36 xend 634] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vbd/19/5632/hotplug-status.
[2011-01-01 14:51:36 xend 634] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vbd/19/5632/hotplug-status.
[2011-01-01 14:51:36 xend 634] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vbd/18/5632/hotplug-status.
[2011-01-01 14:51:36 xend 634] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vbd/19/5632/hotplug-status.
[2011-01-01 14:51:36 xend 634] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vbd/18/5632/hotplug-status.
[2011-01-01 14:51:36 xend 634] DEBUG (DevController:509) hotplugStatusCallback /local/domain/0/backend/vbd/19/5632/hotplug-status.

--------------


/var/log/xen/xen-hot-plug.log
Nothing to flush.
stat: cannot stat `/dev/scd0': No such file or directory
stat: cannot stat `/dev/scd0': No such file or directory


if you need more information it will be my utmost pleasure to provide you the same

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