Hi There,
I''ve installed xen 3 and xen-tools on my Debian etch server and
all seems well, until I try to start a guest domain.
debian:/home/xen# xm create /etc/xen/D4G3.cfg
Using config file "/etc/xen/D4G3.cfg".
Error: Device 2049 (vbd) could not be connected. Backend device not found.
I get the error: "Error: Device 2049 (vbd) could not be connected.
Backend device not found".
Fasiha Ashraf
From Chandigarh to Chennai - find friends all over India. Go to
http://in.promos.yahoo.com/groups/citygroups/
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xenbr0: port 7(vif8.0) entering disabled state
Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: offline
XENBUS_PATH=backend/vif/8/0
Jun 20 02:21:11 localhost kernel: device vif8.0 left promiscuous mode
Jun 20 02:21:11 localhost kernel: audit(1245478871.070:15): dev=vif8.0 prom=0
old_prom=256 auid=4294967295
Jun 20 02:21:11 localhost kernel: xenbr0: port 7(vif8.0) entering disabled state
Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: brctl delif
xenbr0 vif8.0 failed
Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: ifconfig vif8.0
down failed
Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: Successful
vif-bridge offline for vif8.0, bridge xenbr0.
Jun 20 02:21:11 localhost logger: /etc/xen/scripts/xen-hotplug-cleanup:
XENBUS_PATH=backend/vif/8/0
Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Forced to steal lock
on /var/run/xen-hotplug/block from 22545: /etc/xen/scripts/block!
Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Writing
backend/vbd/7/2050/hotplug-status error to xenstore.
Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Failed to find an
unused loop device
Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: remove
XENBUS_PATH=backend/vbd/7/2050
Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Writing
backend/vbd/7/2050/hotplug-status error to xenstore.
Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: xenstore-read
backend/vbd/7/2050/node failed.
Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Writing
backend/vbd/7/2050/hotplug-status error to xenstore.
Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: /etc/xen/scripts/block
failed; error detected.
Jun 20 02:21:17 localhost logger: /etc/xen/scripts/xen-hotplug-cleanup:
XENBUS_PATH=backend/vbd/7/2050
Jun 20 02:21:18 localhost logger: /etc/xen/scripts/xen-hotplug-cleanup: Forced
to steal lock on /var/run/xen-hotplug/block from 22561: /etc/xen/scripts/bloc$
Jun 20 02:21:18 localhost logger: /etc/xen/scripts/xen-hotplug-cleanup: Forced
to steal lock on /var/run/xen-hotplug/block from unknown!
Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: Writing
backend/vbd/8/2050/hotplug-status error to xenstore.
Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: Failed to find an
unused loop device
Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: remove
XENBUS_PATH=backend/vbd/8/2050
Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: Writing
backend/vbd/8/2050/hotplug-status error to xenstore.
Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: xenstore-read
backend/vbd/8/2050/node failed.
Anybody face this issue before? What could be the solution?
Regards
Fasiha Ashraf
Explore and discover exciting holidays and getaways with Yahoo! India
Travel Click here!
ICC World Twenty20 England '09 exclusively on YAHOO! CRICKET
http://cricket.yahoo.com
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Hi, I see "Failed to find an unused loop device" in the output you posted. Correct that first (e.g. using the description at http://lists.xensource.com/archives/html/xen-users/2006-06/msg01148.html). Cheers Andreas Fasiha Ashraf wrote:> > > > xenbr0: port 7(vif8.0) entering disabled state > Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: > offline XENBUS_PATH=backend/vif/8/0 > Jun 20 02:21:11 localhost kernel: device vif8.0 left promiscuous mode > Jun 20 02:21:11 localhost kernel: audit(1245478871.070:15): > dev=vif8.0 prom=0 old_prom=256 auid=4294967295 > Jun 20 02:21:11 localhost kernel: xenbr0: port 7(vif8.0) entering > disabled state > Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: > brctl delif xenbr0 vif8.0 failed > Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: > ifconfig vif8.0 down failed > Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: > Successful vif-bridge offline for vif8.0, bridge xenbr0. > Jun 20 02:21:11 localhost logger: > /etc/xen/scripts/xen-hotplug-cleanup: XENBUS_PATH=backend/vif/8/0 > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Forced > to steal lock on /var/run/xen-hotplug/block from 22545: > /etc/xen/scripts/block! > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/7/2050/hotplug-status error to xenstore. > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Failed > to find an unused loop device > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: remove > XENBUS_PATH=backend/vbd/7/2050 > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/7/2050/hotplug-status error to xenstore. > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: > xenstore-read backend/vbd/7/2050/node failed. > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/7/2050/hotplug-status error to xenstore. > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: > /etc/xen/scripts/block failed; error detected. > Jun 20 02:21:17 localhost logger: > /etc/xen/scripts/xen-hotplug-cleanup: XENBUS_PATH=backend/vbd/7/2050 > Jun 20 02:21:18 localhost logger: > /etc/xen/scripts/xen-hotplug-cleanup: Forced to steal lock on > /var/run/xen-hotplug/block from 22561: /etc/xen/scripts/bloc$ > Jun 20 02:21:18 localhost logger: > /etc/xen/scripts/xen-hotplug-cleanup: Forced to steal lock on > /var/run/xen-hotplug/block from unknown! > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/8/2050/hotplug-status error to xenstore. > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: Failed > to find an unused loop device > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: remove > XENBUS_PATH=backend/vbd/8/2050 > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/8/2050/hotplug-status error to xenstore. > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: > xenstore-read backend/vbd/8/2050/node failed. > > Anybody face this issue before? What could be the solution? > Regards > Fasiha Ashraf > > > ------------------------------------------------------------------------ > Explore and discover exciting holidays and getaways with Yahoo! > India Travel Click here! > <http://in.rd.yahoo.com/tagline_Travel_1/*http://in.travel.yahoo.com/> > > > ------------------------------------------------------------------------ > Cricket on your mind? Visit the ultimate cricket website. Enter now! > <http://in.rd.yahoo.com/tagline_cricket_1/*http://cricket.yahoo.com> > ------------------------------------------------------------------------ > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi there, 1- I am unable to find that "/etc/modprobe.conf" file where I can add "options loop max_loop= 256". Remember i am using Debian 4.0 (etch). 2- There is another problem that we are facing here. We have created 6 VMs but only 4 can run in parallel . Whenever we start the 5th VM the same error occurs "Backend Device not found" when I checked the loop inside dev debian:/dev# cd loop <tab> loop/ loop0 loop1 loop2 loop3 loop4 loop5 loop6 loop7 and debian:/dev# cd loop debian:/dev/loop# ls 0 debian:/dev/loop# How can I check the status of loops or how I come to know that which VM is using which Loop? Regards Fasiha Ashraf --- On Sat, 20/6/09, Andreas Sommer <AndiDog@web.de> wrote: From: Andreas Sommer <AndiDog@web.de> Subject: Re: [Xen-users] Backend device not found To: "Fasiha Ashraf" <feehapk@yahoo.co.in> Cc: xen-users@lists.xensource.com Date: Saturday, 20 June, 2009, 7:50 PM Hi, I see "Failed to find an unused loop device" in the output you posted. Correct that first (e.g. using the description at http://lists.xensource.com/archives/html/xen-users/2006-06/msg01148.html). Cheers Andreas Fasiha Ashraf wrote:> > > > xenbr0: port 7(vif8.0) entering disabled state > Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: > offline XENBUS_PATH=backend/vif/8/0 > Jun 20 02:21:11 localhost kernel: device vif8.0 left promiscuous mode > Jun 20 02:21:11 localhost kernel: audit(1245478871.070:15): > dev=vif8.0 prom=0 old_prom=256 auid=4294967295 > Jun 20 02:21:11 localhost kernel: xenbr0: port 7(vif8.0) entering > disabled state > Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: > brctl delif xenbr0 vif8.0 failed > Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: > ifconfig vif8.0 down failed > Jun 20 02:21:11 localhost logger: /etc/xen/scripts/vif-bridge: > Successful vif-bridge offline for vif8.0, bridge xenbr0. > Jun 20 02:21:11 localhost logger: > /etc/xen/scripts/xen-hotplug-cleanup: XENBUS_PATH=backend/vif/8/0 > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Forced > to steal lock on /var/run/xen-hotplug/block from 22545: > /etc/xen/scripts/block! > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/7/2050/hotplug-status error to xenstore. > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Failed > to find an unused loop device > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: remove > XENBUS_PATH=backend/vbd/7/2050 > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/7/2050/hotplug-status error to xenstore. > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: > xenstore-read backend/vbd/7/2050/node failed. > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/7/2050/hotplug-status error to xenstore. > Jun 20 02:21:17 localhost logger: /etc/xen/scripts/block: > /etc/xen/scripts/block failed; error detected. > Jun 20 02:21:17 localhost logger: > /etc/xen/scripts/xen-hotplug-cleanup: XENBUS_PATH=backend/vbd/7/2050 > Jun 20 02:21:18 localhost logger: > /etc/xen/scripts/xen-hotplug-cleanup: Forced to steal lock on > /var/run/xen-hotplug/block from 22561: /etc/xen/scripts/bloc$ > Jun 20 02:21:18 localhost logger: > /etc/xen/scripts/xen-hotplug-cleanup: Forced to steal lock on > /var/run/xen-hotplug/block from unknown! > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/8/2050/hotplug-status error to xenstore. > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: Failed > to find an unused loop device > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: remove > XENBUS_PATH=backend/vbd/8/2050 > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: Writing > backend/vbd/8/2050/hotplug-status error to xenstore. > Jun 20 02:21:18 localhost logger: /etc/xen/scripts/block: > xenstore-read backend/vbd/8/2050/node failed. > > Anybody face this issue before? What could be the solution? > Regards > Fasiha Ashraf > > > ------------------------------------------------------------------------ > Explore and discover exciting holidays and getaways with Yahoo! > India Travel Click here! > <http://in.rd.yahoo.com/tagline_Travel_1/*http://in.travel.yahoo.com/> > > > ------------------------------------------------------------------------ > Cricket on your mind? Visit the ultimate cricket website. Enter now! > <http://in.rd.yahoo.com/tagline_cricket_1/*http://cricket.yahoo.com> > ------------------------------------------------------------------------ > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users Cricket on your mind? Visit the ultimate cricket website. Enter http://cricket.yahoo.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users