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Peter Fellwock

2005-Aug-10 22:40 UTC

[Xen-users] could not load modules.dep stops network from working?

Iam new to Xen and I am trying to FC4 and FC4 domains. I came across a
problem when my newly created domain never gets a network. When I start
the domain I get a fatal error that leads me to believe that thios might
be the reason why I don''t have networking with the bridge:

 

Checking for new hardwaremodprobe: FATAL: Could not load
/lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or
directory

 

modprobe: FATAL: Could not load
/lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or
directory

 

modprobe: FATAL: Could not load
/lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or
directory

 

mmap /dev/mem: Resource temporarily unavailable

mmap /dev/mem: Resource temporarily unavailable

modprobe: FATAL: Could not load
/lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or
directory

 

The file obviously does not exist, so what do I do?

 

in the domain, the ip is missing:

[root@localhost ~]# ifconfig

lo        Link encap:Local Loopback  

          inet addr:127.0.0.1  Mask:255.0.0.0

          UP LOOPBACK RUNNING  MTU:16436  Metric:1

          RX packets:44 errors:0 dropped:0 overruns:0 frame:0

          TX packets:44 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0 

          RX bytes:3044 (2.9 KiB)  TX bytes:3044 (2.9 KiB)

 

 

And back in the xen master I know the vif is being created:

[root@xenmaster xen]# brctl show xen-br0

bridge name     bridge id               STP enabled     interfaces

xen-br0         8000.00e0812e539c       no              eth0

                                                        vif25.0

and my conf for the domain is:

 

kernel ="/boot/vmlinuz-2.6.12-1.1411_FC4xen0"

memory = 512

name = "rawhide"

nics = 1

vif = [ ''mac=aa:00:00:00:00:11, bridge=xen-br0'']

ip = "192.168.225.181"

netmask  = "255.255.255.0"

gateway = "192.168.225.1"

hostname = "grasshopper.active.com"

disk = [''file:/root/fedora.img,hda1,w'']

root = "/dev/hda1 ro"

 

3 questions:

Why is the domain looking in /2.6.12-1.1411_FC4xen0/modules.dep?

Why is the vif being created but not assigned to the domain?

Are these two problems related?

 

Thanx,

-peter

 



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Anthony Liguori

2005-Aug-10 23:18 UTC

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Re: [Xen-users] could not load modules.dep stops network from working?

Run depmod -a as root

Regards,

Anthony Liguori

Peter Fellwock wrote:
> Iam new to Xen and I am trying to FC4 and FC4 domains. I came across a 
> problem when my newly created domain never gets a network. When I 
> start the domain I get a fatal error that leads me to believe that 
> thios might be the reason why I don’t have networking with the bridge:
>
> Checking for new hardwaremodprobe: FATAL: Could not load 
> /lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or directory
>
> modprobe: FATAL: Could not load 
> /lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or directory
>
> modprobe: FATAL: Could not load 
> /lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or directory
>
> mmap /dev/mem: Resource temporarily unavailable
>
> mmap /dev/mem: Resource temporarily unavailable
>
> modprobe: FATAL: Could not load 
> /lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or directory
>
> The file obviously does not exist, so what do I do?
>
> in the domain, the ip is missing:
>
> [root@localhost ~]# ifconfig
>
> lo Link encap:Local Loopback
>
> inet addr:127.0.0.1 Mask:255.0.0.0
>
> UP LOOPBACK RUNNING MTU:16436 Metric:1
>
> RX packets:44 errors:0 dropped:0 overruns:0 frame:0
>
> TX packets:44 errors:0 dropped:0 overruns:0 carrier:0
>
> collisions:0 txqueuelen:0
>
> RX bytes:3044 (2.9 KiB) TX bytes:3044 (2.9 KiB)
>
> And back in the xen master I know the vif is being created:
>
> [root@xenmaster xen]# brctl show xen-br0
>
> bridge name bridge id STP enabled interfaces
>
> xen-br0 8000.00e0812e539c no eth0
>
> vif25.0
>
> and my conf for the domain is:
>
> kernel ="/boot/vmlinuz-2.6.12-1.1411_FC4xen0"
>
> memory = 512
>
> name = "rawhide"
>
> nics = 1
>
> vif = [ ''mac=aa:00:00:00:00:11, bridge=xen-br0'']
>
> ip = "192.168.225.181"
>
> netmask = "255.255.255.0"
>
> gateway = "192.168.225.1"
>
> hostname = "grasshopper.active.com"
>
> disk = [''file:/root/fedora.img,hda1,w'']
>
> root = "/dev/hda1 ro"
>
> 3 questions:
>
> Why is the domain looking in /2.6.12-1.1411_FC4xen0/modules.dep?
>
> Why is the vif being created but not assigned to the domain?
>
> Are these two problems related?
>
> Thanx,
>
> -peter
>
>------------------------------------------------------------------------
>
>_______________________________________________
>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

Marcus Brown

2005-Aug-10 23:36 UTC

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Re: [Xen-users] could not load modules.dep stops network from working?

Hi Peter,

Peter Fellwock wrote:
> Why is the domain looking in /2.6.12-1.1411_FC4xen0/modules.dep?
>kernel ="/boot/vmlinuz-2.6.12-1.1411_FC4xen0"
should probably be something like:
kernel ="/boot/vmlinuz-2.6.12-1.1411_FC4xenU"
> Why is the vif being created but not assigned to the domain?
>errr ... I think so.
Depends what modules you''ve put in
[''file:/root/fedora.img,hda1,w''].
You probably don''t have xen0 modules in there!
> Are these two problems related?
>Probably.

Marcus.

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Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Mark Williamson

2005-Aug-11 02:25 UTC

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Re: [Xen-users] could not load modules.dep stops network from working?

> Peter Fellwock wrote:
> > Why is the domain looking in /2.6.12-1.1411_FC4xen0/modules.dep?
>
> kernel ="/boot/vmlinuz-2.6.12-1.1411_FC4xen0"
> should probably be something like:
> kernel ="/boot/vmlinuz-2.6.12-1.1411_FC4xenU"
In general xen0 kernel should work too, it''s just bigger.  As you
rightly
point out, though, if there are things you *need* in modules, you''ll
need a
matching set of modules on the domain''s filesystem.

Cheers,
Mark
> > Why is the vif being created but not assigned to the domain?
>
> errr ... I think so.
> Depends what modules you''ve put in
[''file:/root/fedora.img,hda1,w''].
> You probably don''t have xen0 modules in there!
>
> > Are these two problems related?
>
> Probably.
>
> Marcus.
>
> _______________________________________________
> 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

Reuben Kabel

2005-Aug-11 04:16 UTC

head link

Re: [Xen-users] could not load modules.dep stops network from working?

Are you following the Fedora Xen Quickstart guide? I have been and have
noticed similar issues where the network doesn't seem to be created.
I've
gotten around these by hand coping the /etc/sysconfig/network ,
/etc/sysconfig/network-scripts/ifcfg-eth0 files from dom0 and edited
accordinhgly. I'm still crunching along and seeing intermittent issues, but
those seem to have enabled networking in domU. I believe the modprobe
errors you're seeing are red herrings and should be resolved by the depmod
as previously noted. I don't recall exactly, but I think  I had to mkdir
/lib/modules/2.6.12-xenU within the domU filesystem before running depmod.

hope that helps - Reuben

--
Reuben Kabel
IT Specialist, Application Innovation Services
Reporting to Sue Nile
404 Wyman St.
Waltham, MA. 02454
Mobile: 617.271.7999



                                                                           
             aliguori@us.ltcfw                                             
             d.linux.ibm.com                                               
             Sent by:                                                   To 
             xen-users-bounces         Peter Fellwock                      
             @lists.xensource.         <Peter.Fellwock@active.com>
             com                                                        cc 
                                       xen-users@lists.xensource.com       
                                                                   Subject 
             08/10/2005 07:18          Re: [Xen-users] could not load      
             PM                        modules.dep stops network from      
                                       working?                            
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Run depmod -a as root

Regards,

Anthony Liguori

Peter Fellwock wrote:
> Iam new to Xen and I am trying to FC4 and FC4 domains. I came across a
> problem when my newly created domain never gets a network. When I
> start the domain I get a fatal error that leads me to believe that
> thios might be the reason why I don’t have networking with the bridge:
>
> Checking for new hardwaremodprobe: FATAL: Could not load
> /lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or directory
>
> modprobe: FATAL: Could not load
> /lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or directory
>
> modprobe: FATAL: Could not load
> /lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or directory
>
> mmap /dev/mem: Resource temporarily unavailable
>
> mmap /dev/mem: Resource temporarily unavailable
>
> modprobe: FATAL: Could not load
> /lib/modules/2.6.12-1.1411_FC4xen0/modules.dep: No such file or directory
>
> The file obviously does not exist, so what do I do?
>
> in the domain, the ip is missing:
>
> [root@localhost ~]# ifconfig
>
> lo Link encap:Local Loopback
>
> inet addr:127.0.0.1 Mask:255.0.0.0
>
> UP LOOPBACK RUNNING MTU:16436 Metric:1
>
> RX packets:44 errors:0 dropped:0 overruns:0 frame:0
>
> TX packets:44 errors:0 dropped:0 overruns:0 carrier:0
>
> collisions:0 txqueuelen:0
>
> RX bytes:3044 (2.9 KiB) TX bytes:3044 (2.9 KiB)
>
> And back in the xen master I know the vif is being created:
>
> [root@xenmaster xen]# brctl show xen-br0
>
> bridge name bridge id STP enabled interfaces
>
> xen-br0 8000.00e0812e539c no eth0
>
> vif25.0
>
> and my conf for the domain is:
>
> kernel ="/boot/vmlinuz-2.6.12-1.1411_FC4xen0"
>
> memory = 512
>
> name = "rawhide"
>
> nics = 1
>
> vif = [ 'mac=aa:00:00:00:00:11, bridge=xen-br0']
>
> ip = "192.168.225.181"
>
> netmask = "255.255.255.0"
>
> gateway = "192.168.225.1"
>
> hostname = "grasshopper.active.com"
>
> disk = ['file:/root/fedora.img,hda1,w']
>
> root = "/dev/hda1 ro"
>
> 3 questions:
>
> Why is the domain looking in /2.6.12-1.1411_FC4xen0/modules.dep?
>
> Why is the vif being created but not assigned to the domain?
>
> Are these two problems related?
>
> Thanx,
>
> -peter
>
>------------------------------------------------------------------------
>
>_______________________________________________
>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

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

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