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Li Ge

2005-Jul-20 22:43 UTC

[Xen-users] ramdisk option in domU config file does not work

Hi,
      I added ramdisk option in domU config file to let it load initrd when
domU is booting up. I got the follow error message:

 # xm create /root/vm1.cfg -c
Using config file "/root/vm1.cfg".
Error: Error creating domain: (0, ''Error'')

            When I commented the ramdisk option out, the problem went away
and I could start domU without a problem. Here is the domU config file I
used:

# Kernel image file.
kernel = "/boot/vmlinuz-2.6-xenU"

# Optional ramdisk.
#ramdisk = "/boot/initrd-2.6.12-xenU-reiserFS"
ramdisk = "/boot/initrd-2.6.12-xenU"

# Initial memory allocation (in megabytes) for the new domain.
memory = 128

# A name for your domain. All domains must have different names.
name = "vm1"

disk = [ ''phy:sda7,hda1,w'' ]

# Set if you want dhcp to allocate the IP address.
#dhcp="dhcp"
# Set netmask.
#netmask# Set default gateway.
#gateway# Set the hostname.
#hostname= "vm%d" % vmid

# Set root device.
root = "/dev/hda1 ro"

# Sets runlevel 4.
extra = "4"

      Could it be something I''ve missed?  The xen version is the
xen-unstable tree with latest changeset 5814.

Thanks,
Li

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

Boris Lenzinger

2005-Jul-26 09:18 UTC

head link

Re: [Xen-users] ramdisk option in domU config file does not work

Hi,

I had this problem (well I think it was the same): you do not have 
enough free memory to run your instance.

run:
xm info

It will tell you how much free memory you have.
First solution is to decrease the memory in the configuration to check 
if you can run your configuration.
If it is working (and you need more memory), decrease memory of dom0.

If still not working, what is the log file saying ? (/var/log/xend.log 
on a fedora distribution)

Boris

Li Ge wrote:
> Hi,
> I added ramdisk option in domU config file to let it load initrd when 
> domU is booting up. I got the follow error message:
>
> # xm create /root/vm1.cfg -c
> Using config file "/root/vm1.cfg".
> Error: Error creating domain: (0, ''Error'')
>
> When I commented the ramdisk option out, the problem went away and I 
> could start domU without a problem. Here is the domU config file I used:
>
> # Kernel image file.
> kernel = "/boot/vmlinuz-2.6-xenU"
>
> # Optional ramdisk.
> #ramdisk = "/boot/initrd-2.6.12-xenU-reiserFS"
> ramdisk = "/boot/initrd-2.6.12-xenU"
>
> # Initial memory allocation (in megabytes) for the new domain.
> memory = 128
>
> # A name for your domain. All domains must have different names.
> name = "vm1"
>
> disk = [ ''phy:sda7,hda1,w'' ]
>
> # Set if you want dhcp to allocate the IP address.
> #dhcp="dhcp"
> # Set netmask.
> #netmask> # Set default gateway.
> #gateway> # Set the hostname.
> #hostname= "vm%d" % vmid
>
> # Set root device.
> root = "/dev/hda1 ro"
>
> # Sets runlevel 4.
> extra = "4"
>
> Could it be something I''ve missed? The xen version is the
xen-unstable
> tree with latest changeset 5814.
>
> Thanks,
> Li
>
>------------------------------------------------------------------------
>
>_______________________________________________
>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

2005-Jul-26 09:42 UTC

head link

Re: [Xen-users] ramdisk option in domU config file does not work

On 7/26/05, Boris Lenzinger <boris.lenzinger@gmail.com>
wrote:> Hi,
> 
> I had this problem (well I think it was the same): you do not have
> enough free memory to run your instance.
> 
> run:
> xm info
> 
> It will tell you how much free memory you have.
> First solution is to decrease the memory in the configuration to check
> if you can run your configuration.
> If it is working (and you need more memory), decrease memory of dom0.
> 
oops, there is a patch for xend to automatically do this, but dont
know when the patch gets merged ;-)


regards,
aq

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

David F Barrera

2005-Jul-26 19:26 UTC

head link

Re: [Xen-users] ramdisk option in domU config file does not work

I have 1GB of memory on my machine, of which 756 are free. Whenever I
try to start a DomU with an initrd file, I get the same error that Li Ge
reported:
	Using config file "vm1.cfg".
	Error: Error creating domain: (0, ''Error'')

DomU will start just fine without the initrd; however, in one case where
I have a DomU with a Reiser FS, I need to be able to use the initrd (I
know I can build support for Reiser into the kernel, but that is not the
point).

On Tue, 2005-07-26 at 11:18 +0200, Boris Lenzinger
wrote:> Hi,
> 
> I had this problem (well I think it was the same): you do not have 
> enough free memory to run your instance.
> 
> run:
> xm info
> 
> It will tell you how much free memory you have.
> First solution is to decrease the memory in the configuration to check 
> if you can run your configuration.
> If it is working (and you need more memory), decrease memory of dom0.
> 
> If still not working, what is the log file saying ? (/var/log/xend.log 
> on a fedora distribution)
> 
> Boris
> 
> Li Ge wrote:
> 
> > Hi,
> > I added ramdisk option in domU config file to let it load initrd when 
> > domU is booting up. I got the follow error message:
> >
> > # xm create /root/vm1.cfg -c
> > Using config file "/root/vm1.cfg".
> > Error: Error creating domain: (0, ''Error'')
> >
> > When I commented the ramdisk option out, the problem went away and I 
> > could start domU without a problem. Here is the domU config file I
used:
> >
> > # Kernel image file.
> > kernel = "/boot/vmlinuz-2.6-xenU"
> >
> > # Optional ramdisk.
> > #ramdisk = "/boot/initrd-2.6.12-xenU-reiserFS"
> > ramdisk = "/boot/initrd-2.6.12-xenU"
> >
> > # Initial memory allocation (in megabytes) for the new domain.
> > memory = 128
> >
> > # A name for your domain. All domains must have different names.
> > name = "vm1"
> >
> > disk = [ ''phy:sda7,hda1,w'' ]
> >
> > # Set if you want dhcp to allocate the IP address.
> > #dhcp="dhcp"
> > # Set netmask.
> > #netmask> > # Set default gateway.
> > #gateway> > # Set the hostname.
> > #hostname= "vm%d" % vmid
> >
> > # Set root device.
> > root = "/dev/hda1 ro"
> >
> > # Sets runlevel 4.
> > extra = "4"
> >
> > Could it be something I''ve missed? The xen version is the
xen-unstable
> > tree with latest changeset 5814.
> >
> > Thanks,
> > Li
> >
>
>------------------------------------------------------------------------
> >
> >_______________________________________________
> >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
> -- 
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                        Euripides


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

Li Ge

2005-Jul-26 22:14 UTC

head link

Re: [Xen-users] ramdisk option in domU config file does not work

This problem seems to have something to do with the size of the ramdisk
file. But I am not quite sure.

I tried it on different distros(SLES9, RHEL4, FC3). Here is what I
observed:

1. Can not create domU with ramdisk option using the domU initrd file (1.2
MB) of SLES9 or the domU initrd file (1.4 MB) of RHEL.
2. I can create domU on one RHEL box with ramdisk option using the
initrd-2.6.12-xenU file copied from another Fedora Core box, which has
relatively smaller file size (300KB). But using the original ramdisk file
of RHEL, I failed to create domU.

Is there a limitation for ramdisk file size, for example <1M?

Thanks,
Li



                                                                           
             dfbp@us.ltcfwd.li                                             
             nux.ibm.com                                                   
             Sent by:                                                   To 
             xen-users-bounces         boris.lenzinger@gmail.com           
             @lists.xensource.                                          cc 
             com                       Li Ge/Austin/IBM@IBMUS,             
                                       xen-users@lists.xensource.com       
                                                                   Subject 
             07/26/2005 02:26          Re: [Xen-users] ramdisk option in   
             PM                        domU config file does not work      
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




I have 1GB of memory on my machine, of which 756 are free. Whenever I
try to start a DomU with an initrd file, I get the same error that Li Ge
reported:
             Using config file "vm1.cfg".
             Error: Error creating domain: (0, ''Error'')

DomU will start just fine without the initrd; however, in one case where
I have a DomU with a Reiser FS, I need to be able to use the initrd (I
know I can build support for Reiser into the kernel, but that is not the
point).

On Tue, 2005-07-26 at 11:18 +0200, Boris Lenzinger
wrote:> Hi,
>
> I had this problem (well I think it was the same): you do not have
> enough free memory to run your instance.
>
> run:
> xm info
>
> It will tell you how much free memory you have.
> First solution is to decrease the memory in the configuration to check
> if you can run your configuration.
> If it is working (and you need more memory), decrease memory of dom0.
>
> If still not working, what is the log file saying ? (/var/log/xend.log
> on a fedora distribution)
>
> Boris
>
> Li Ge wrote:
>
> > Hi,
> > I added ramdisk option in domU config file to let it load initrd when
> > domU is booting up. I got the follow error message:
> >
> > # xm create /root/vm1.cfg -c
> > Using config file "/root/vm1.cfg".
> > Error: Error creating domain: (0, ''Error'')
> >
> > When I commented the ramdisk option out, the problem went away and I
> > could start domU without a problem. Here is the domU config file I
used:> >
> > # Kernel image file.
> > kernel = "/boot/vmlinuz-2.6-xenU"
> >
> > # Optional ramdisk.
> > #ramdisk = "/boot/initrd-2.6.12-xenU-reiserFS"
> > ramdisk = "/boot/initrd-2.6.12-xenU"
> >
> > # Initial memory allocation (in megabytes) for the new domain.
> > memory = 128
> >
> > # A name for your domain. All domains must have different names.
> > name = "vm1"
> >
> > disk = [ ''phy:sda7,hda1,w'' ]
> >
> > # Set if you want dhcp to allocate the IP address.
> > #dhcp="dhcp"
> > # Set netmask.
> > #netmask> > # Set default gateway.
> > #gateway> > # Set the hostname.
> > #hostname= "vm%d" % vmid
> >
> > # Set root device.
> > root = "/dev/hda1 ro"
> >
> > # Sets runlevel 4.
> > extra = "4"
> >
> > Could it be something I''ve missed? The xen version is the
xen-unstable
> > tree with latest changeset 5814.
> >
> > Thanks,
> > Li
> >
>
>------------------------------------------------------------------------
> >
> >_______________________________________________
> >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
>--
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                        Euripides


_______________________________________________
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

Anthony Liguori

2005-Jul-26 22:22 UTC

head link

Re: [Xen-users] ramdisk option in domU config file does not work

Li Ge wrote:
> This problem seems to have something to do with the size of the 
> ramdisk file. But I am not quite sure.
>
> I tried it on different distros(SLES9, RHEL4, FC3). Here is what I 
> observed:
>
> 1. Can not create domU with ramdisk option using the domU initrd file 
> (1.2 MB) of SLES9 or the domU initrd file (1.4 MB) of RHEL.
> 2. I can create domU on one RHEL box with ramdisk option using the 
> initrd-2.6.12-xenU file copied from another Fedora Core box, which has 
> relatively smaller file size (300KB). But using the original ramdisk 
> file of RHEL, I failed to create domU.
>
> Is there a limitation for ramdisk file size, for example <1M?
>The typically limitation is 4MB which is what our default ramdisk size is.

Please note, that you cannot use out-of-the-box ramdisk that come from 
distros as they contain kernel modules that have not been compiled for 
Xen.  You must make a ramdisk with the appropriate utilities.

Dave might be running into the same problem.

Regards,

Anthony Liguori
> Thanks,
> Li
>
> Inactive hide details for 
> dfbp@us.ltcfwd.linux.ibm.comdfbp@us.ltcfwd.linux.ibm.com
>
>
>                         *dfbp@us.ltcfwd.linux.ibm.com*
>                         Sent by: xen-users-bounces@lists.xensource.com
>
>                         07/26/2005 02:26 PM
>
> 	
>
> To
> 	
> boris.lenzinger@gmail.com
>
> cc
> 	
> Li Ge/Austin/IBM@IBMUS, xen-users@lists.xensource.com
>
> Subject
> 	
> Re: [Xen-users] ramdisk option in domU config file does not work
>
> 	
>
>
> I have 1GB of memory on my machine, of which 756 are free. Whenever I
> try to start a DomU with an initrd file, I get the same error that Li Ge
> reported:
> Using config file "vm1.cfg".
> Error: Error creating domain: (0, ''Error'')
>
> DomU will start just fine without the initrd; however, in one case where
> I have a DomU with a Reiser FS, I need to be able to use the initrd (I
> know I can build support for Reiser into the kernel, but that is not the
> point).
>
> On Tue, 2005-07-26 at 11:18 +0200, Boris Lenzinger wrote:
> > Hi,
> >
> > I had this problem (well I think it was the same): you do not have
> > enough free memory to run your instance.
> >
> > run:
> > xm info
> >
> > It will tell you how much free memory you have.
> > First solution is to decrease the memory in the configuration to check
> > if you can run your configuration.
> > If it is working (and you need more memory), decrease memory of dom0.
> >
> > If still not working, what is the log file saying ? (/var/log/xend.log
> > on a fedora distribution)
> >
> > Boris
> >
> > Li Ge wrote:
> >
> > > Hi,
> > > I added ramdisk option in domU config file to let it load initrd
when
> > > domU is booting up. I got the follow error message:
> > >
> > > # xm create /root/vm1.cfg -c
> > > Using config file "/root/vm1.cfg".
> > > Error: Error creating domain: (0, ''Error'')
> > >
> > > When I commented the ramdisk option out, the problem went away
and I
> > > could start domU without a problem. Here is the domU config file
I
> used:
> > >
> > > # Kernel image file.
> > > kernel = "/boot/vmlinuz-2.6-xenU"
> > >
> > > # Optional ramdisk.
> > > #ramdisk = "/boot/initrd-2.6.12-xenU-reiserFS"
> > > ramdisk = "/boot/initrd-2.6.12-xenU"
> > >
> > > # Initial memory allocation (in megabytes) for the new domain.
> > > memory = 128
> > >
> > > # A name for your domain. All domains must have different names.
> > > name = "vm1"
> > >
> > > disk = [ ''phy:sda7,hda1,w'' ]
> > >
> > > # Set if you want dhcp to allocate the IP address.
> > > #dhcp="dhcp"
> > > # Set netmask.
> > > #netmask> > > # Set default gateway.
> > > #gateway> > > # Set the hostname.
> > > #hostname= "vm%d" % vmid
> > >
> > > # Set root device.
> > > root = "/dev/hda1 ro"
> > >
> > > # Sets runlevel 4.
> > > extra = "4"
> > >
> > > Could it be something I''ve missed? The xen version is
the
> xen-unstable
> > > tree with latest changeset 5814.
> > >
> > > Thanks,
> > > Li
> > >
> > 
>
>------------------------------------------------------------------------
> > >
> > >_______________________________________________
> > >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
> >
> -- 
> Regards,
>
> David F Barrera
> Linux Technology Center
> Systems and Technology Group, IBM
>
> "The wisest men follow their own direction. "
>                                                        Euripides
>
>
> _______________________________________________
> 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

Li Ge

2005-Jul-26 22:30 UTC

head link

Re: [Xen-users] ramdisk option in domU config file does not work

Dave and I both used the initrd-2.6.12-xenU file which was based on
/lib/modules/2.6.12-xenU.

Li


                                                                           
             aliguori@us.ltcfw                                             
             d.linux.ibm.com                                               
             Sent by:                                                   To 
             xen-users-bounces         Li Ge/Austin/IBM@IBMUS              
             @lists.xensource.                                          cc 
             com                       xen-users-bounces@lists.xensource.c 
                                       om, dfbp@us.ltcfwd.linux.ibm.com,   
                                       xen-users@lists.xensource.com,      
             07/26/2005 05:22          boris.lenzinger@gmail.com           
             PM                                                    Subject 
                                       Re: [Xen-users] ramdisk option in   
                                       domU config file does not work      
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Li Ge wrote:
> This problem seems to have something to do with the size of the
> ramdisk file. But I am not quite sure.
>
> I tried it on different distros(SLES9, RHEL4, FC3). Here is what I
> observed:
>
> 1. Can not create domU with ramdisk option using the domU initrd file
> (1.2 MB) of SLES9 or the domU initrd file (1.4 MB) of RHEL.
> 2. I can create domU on one RHEL box with ramdisk option using the
> initrd-2.6.12-xenU file copied from another Fedora Core box, which has
> relatively smaller file size (300KB). But using the original ramdisk
> file of RHEL, I failed to create domU.
>
> Is there a limitation for ramdisk file size, for example <1M?
>The typically limitation is 4MB which is what our default ramdisk size is.

Please note, that you cannot use out-of-the-box ramdisk that come from
distros as they contain kernel modules that have not been compiled for
Xen.  You must make a ramdisk with the appropriate utilities.

Dave might be running into the same problem.

Regards,

Anthony Liguori
> Thanks,
> Li
>
> Inactive hide details for
> dfbp@us.ltcfwd.linux.ibm.comdfbp@us.ltcfwd.linux.ibm.com
>
>
>                         *dfbp@us.ltcfwd.linux.ibm.com*
>                         Sent by: xen-users-bounces@lists.xensource.com
>
>                         07/26/2005 02:26 PM
>
>
>
> To
>
> boris.lenzinger@gmail.com
>
> cc
>
> Li Ge/Austin/IBM@IBMUS, xen-users@lists.xensource.com
>
> Subject
>
> Re: [Xen-users] ramdisk option in domU config file does not work
>
>
>
>
> I have 1GB of memory on my machine, of which 756 are free. Whenever I
> try to start a DomU with an initrd file, I get the same error that Li Ge
> reported:
> Using config file "vm1.cfg".
> Error: Error creating domain: (0, ''Error'')
>
> DomU will start just fine without the initrd; however, in one case where
> I have a DomU with a Reiser FS, I need to be able to use the initrd (I
> know I can build support for Reiser into the kernel, but that is not the
> point).
>
> On Tue, 2005-07-26 at 11:18 +0200, Boris Lenzinger wrote:
> > Hi,
> >
> > I had this problem (well I think it was the same): you do not have
> > enough free memory to run your instance.
> >
> > run:
> > xm info
> >
> > It will tell you how much free memory you have.
> > First solution is to decrease the memory in the configuration to check
> > if you can run your configuration.
> > If it is working (and you need more memory), decrease memory of dom0.
> >
> > If still not working, what is the log file saying ? (/var/log/xend.log
> > on a fedora distribution)
> >
> > Boris
> >
> > Li Ge wrote:
> >
> > > Hi,
> > > I added ramdisk option in domU config file to let it load initrd
when
> > > domU is booting up. I got the follow error message:
> > >
> > > # xm create /root/vm1.cfg -c
> > > Using config file "/root/vm1.cfg".
> > > Error: Error creating domain: (0, ''Error'')
> > >
> > > When I commented the ramdisk option out, the problem went away
and I
> > > could start domU without a problem. Here is the domU config file
I
> used:
> > >
> > > # Kernel image file.
> > > kernel = "/boot/vmlinuz-2.6-xenU"
> > >
> > > # Optional ramdisk.
> > > #ramdisk = "/boot/initrd-2.6.12-xenU-reiserFS"
> > > ramdisk = "/boot/initrd-2.6.12-xenU"
> > >
> > > # Initial memory allocation (in megabytes) for the new domain.
> > > memory = 128
> > >
> > > # A name for your domain. All domains must have different names.
> > > name = "vm1"
> > >
> > > disk = [ ''phy:sda7,hda1,w'' ]
> > >
> > > # Set if you want dhcp to allocate the IP address.
> > > #dhcp="dhcp"
> > > # Set netmask.
> > > #netmask> > > # Set default gateway.
> > > #gateway> > > # Set the hostname.
> > > #hostname= "vm%d" % vmid
> > >
> > > # Set root device.
> > > root = "/dev/hda1 ro"
> > >
> > > # Sets runlevel 4.
> > > extra = "4"
> > >
> > > Could it be something I''ve missed? The xen version is
the
> xen-unstable
> > > tree with latest changeset 5814.
> > >
> > > Thanks,
> > > Li
> > >
> >
>
>------------------------------------------------------------------------
> > >
> > >_______________________________________________
> > >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
> >
> --
> Regards,
>
> David F Barrera
> Linux Technology Center
> Systems and Technology Group, IBM
>
> "The wisest men follow their own direction. "
>                                                        Euripides
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>
>------------------------------------------------------------------------
>
>_______________________________________________
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>

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Li Ge

2005-Jul-26 22:45 UTC

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Re: [Xen-users] ramdisk option in domU config file does not work

Sorry, I guess that " the original ramdisk file of RHEL" is kind of
misleading here. What I really meant was the ramdisk file generated on RHEL
and based on 2.6.12-xenU, not the ramdisk file comes from the distro.

A little bit more information to answer Boris'' question:

1. I have 1G memory. Dom0 used 512 MB. In domU file, I set "memory =
128".
So it should have enough memory to use.
2. /var/log/xend.log does not say much. Here is the output:

[2005-07-26 17:40:47 xend] DEBUG (image:129) initDomain: cpu=-1
mem_kb=225280 ssidref=-1 dom=4
[2005-07-26 17:40:47 xend] DEBUG (XendDomainInfo:674) init_domain> Created
domain=4 name=vm1 memory=220
[2005-07-26 17:40:47 xend] INFO (image:178) buildDomain os=linux dom=4
vcpus=1
[2005-07-26 17:40:47 xend] INFO (XendRoot:128) EVENT> xend.domain.create
[''vm1'', 4]
[2005-07-26 17:40:47 xend] INFO (XendRoot:128) EVENT> xend.virq 3

Thanks,
Li


                                                                           
             Li                                                            
             Ge/Austin/IBM@IBM                                             
             US                                                         To 
             Sent by:                  aliguori@us.ltcfwd.linux.ibm.com    
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             @lists.xensource.         xen-users-bounces@lists.xensource.c 
             com                       om, dfbp@us.ltcfwd.linux.ibm.com,   
                                       xen-users@lists.xensource.com,      
                                       boris.lenzinger@gmail.com           
             07/26/2005 05:30                                      Subject 
             PM                        Re: [Xen-users] ramdisk option in   
                                       domU config file does not work      
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Dave and I both used the initrd-2.6.12-xenU file which was based on
/lib/modules/2.6.12-xenU.

Li
Inactive hide details for aliguori@us.ltcfwd.linux.ibm.com
aliguori@us.ltcfwd.linux.ibm.com

                                                                           
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                         inux                                              
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                         unce                                              
                         s@li                                      Subject 
                         sts.                                              
                         xens           Re: [Xen-users] ramdisk option in  
                         ourc           domU config file does not work     
                         e.co                                              
                         m                                                 
                                                                           
                                                                           
                         07/2                                              
                         6/20                                              
                         05                                                
                         05:2                                              
                         2 PM                                              
                                                                           



Li Ge wrote:
> This problem seems to have something to do with the size of the
> ramdisk file. But I am not quite sure.
>
> I tried it on different distros(SLES9, RHEL4, FC3). Here is what I
> observed:
>
> 1. Can not create domU with ramdisk option using the domU initrd file
> (1.2 MB) of SLES9 or the domU initrd file (1.4 MB) of RHEL.
> 2. I can create domU on one RHEL box with ramdisk option using the
> initrd-2.6.12-xenU file copied from another Fedora Core box, which has
> relatively smaller file size (300KB). But using the original ramdisk
> file of RHEL, I failed to create domU.
>
> Is there a limitation for ramdisk file size, for example <1M?
>The typically limitation is 4MB which is what our default ramdisk size is.

Please note, that you cannot use out-of-the-box ramdisk that come from
distros as they contain kernel modules that have not been compiled for
Xen.  You must make a ramdisk with the appropriate utilities.

Dave might be running into the same problem.

Regards,

Anthony Liguori
> Thanks,
> Li
>
> Inactive hide details for
> dfbp@us.ltcfwd.linux.ibm.comdfbp@us.ltcfwd.linux.ibm.com
>
>
>                         *dfbp@us.ltcfwd.linux.ibm.com*
>                         Sent by: xen-users-bounces@lists.xensource.com
>
>                         07/26/2005 02:26 PM
>
>
>
> To
>
> boris.lenzinger@gmail.com
>
> cc
>
> Li Ge/Austin/IBM@IBMUS, xen-users@lists.xensource.com
>
> Subject
>
> Re: [Xen-users] ramdisk option in domU config file does not work
>
>
>
>
> I have 1GB of memory on my machine, of which 756 are free. Whenever I
> try to start a DomU with an initrd file, I get the same error that Li Ge
> reported:
> Using config file "vm1.cfg".
> Error: Error creating domain: (0, ''Error'')
>
> DomU will start just fine without the initrd; however, in one case where
> I have a DomU with a Reiser FS, I need to be able to use the initrd (I
> know I can build support for Reiser into the kernel, but that is not the
> point).
>
> On Tue, 2005-07-26 at 11:18 +0200, Boris Lenzinger wrote:
> > Hi,
> >
> > I had this problem (well I think it was the same): you do not have
> > enough free memory to run your instance.
> >
> > run:
> > xm info
> >
> > It will tell you how much free memory you have.
> > First solution is to decrease the memory in the configuration to check
> > if you can run your configuration.
> > If it is working (and you need more memory), decrease memory of dom0.
> >
> > If still not working, what is the log file saying ? (/var/log/xend.log
> > on a fedora distribution)
> >
> > Boris
> >
> > Li Ge wrote:
> >
> > > Hi,
> > > I added ramdisk option in domU config file to let it load initrd
when
> > > domU is booting up. I got the follow error message:
> > >
> > > # xm create /root/vm1.cfg -c
> > > Using config file "/root/vm1.cfg".
> > > Error: Error creating domain: (0, ''Error'')
> > >
> > > When I commented the ramdisk option out, the problem went away
and I
> > > could start domU without a problem. Here is the domU config file
I
> used:
> > >
> > > # Kernel image file.
> > > kernel = "/boot/vmlinuz-2.6-xenU"
> > >
> > > # Optional ramdisk.
> > > #ramdisk = "/boot/initrd-2.6.12-xenU-reiserFS"
> > > ramdisk = "/boot/initrd-2.6.12-xenU"
> > >
> > > # Initial memory allocation (in megabytes) for the new domain.
> > > memory = 128
> > >
> > > # A name for your domain. All domains must have different names.
> > > name = "vm1"
> > >
> > > disk = [ ''phy:sda7,hda1,w'' ]
> > >
> > > # Set if you want dhcp to allocate the IP address.
> > > #dhcp="dhcp"
> > > # Set netmask.
> > > #netmask> > > # Set default gateway.
> > > #gateway> > > # Set the hostname.
> > > #hostname= "vm%d" % vmid
> > >
> > > # Set root device.
> > > root = "/dev/hda1 ro"
> > >
> > > # Sets runlevel 4.
> > > extra = "4"
> > >
> > > Could it be something I''ve missed? The xen version is
the
> xen-unstable
> > > tree with latest changeset 5814.
> > >
> > > Thanks,
> > > Li
> > >
> >
>
>------------------------------------------------------------------------
> > >
> > >_______________________________________________
> > >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
> >
> --
> Regards,
>
> David F Barrera
> Linux Technology Center
> Systems and Technology Group, IBM
>
> "The wisest men follow their own direction. "
>                                                        Euripides
>
>
> _______________________________________________
> 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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David F Barrera

2005-Jul-27 14:34 UTC

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Re: [Xen-users] ramdisk option in domU config file does not work

On Tue, 2005-07-26 at 17:22 -0500, Anthony Liguori
wrote:> Li Ge wrote:
> 
> > This problem seems to have something to do with the size of the 
> > ramdisk file. But I am not quite sure.
> >
> > I tried it on different distros(SLES9, RHEL4, FC3). Here is what I 
> > observed:
> >
> > 1. Can not create domU with ramdisk option using the domU initrd file 
> > (1.2 MB) of SLES9 or the domU initrd file (1.4 MB) of RHEL.
> > 2. I can create domU on one RHEL box with ramdisk option using the 
> > initrd-2.6.12-xenU file copied from another Fedora Core box, which has
> > relatively smaller file size (300KB). But using the original ramdisk 
> > file of RHEL, I failed to create domU.
> >
> > Is there a limitation for ramdisk file size, for example <1M?
> >
> The typically limitation is 4MB which is what our default ramdisk size is.
> 
> Please note, that you cannot use out-of-the-box ramdisk that come from 
> distros as they contain kernel modules that have not been compiled for 
> Xen.  You must make a ramdisk with the appropriate utilities.
> 
> Dave might be running into the same problem.
No, I am making the initrd for the appropriate build.> 
> Regards,
> 
> Anthony Liguori
> 
> > Thanks,
> > Li
> >
> > Inactive hide details for 
> > dfbp@us.ltcfwd.linux.ibm.comdfbpp@us.ltcfwd.linux.ibm.com
> >
> >
> >                         *dfbp@us.ltcfwd.linux.ibm.com*
> >                         Sent by: xen-users-bounces@lists.xensource.com
> >
> >                         07/26/2005 02:26 PM
> >
> > 	
> >
> > To
> > 	
> > boris.lenzinger@gmail.com
> >
> > cc
> > 	
> > Li Ge/Austin/IBM@IBMUS, xen-users@lists.xensource.com
> >
> > Subject
> > 	
> > Re: [Xen-users] ramdisk option in domU config file does not work
> >
> > 	
> >
> >
> > I have 1GB of memory on my machine, of which 756 are free. Whenever I
> > try to start a DomU with an initrd file, I get the same error that Li
Ge
> > reported:
> > Using config file "vm1.cfg".
> > Error: Error creating domain: (0, ''Error'')
> >
> > DomU will start just fine without the initrd; however, in one case
where
> > I have a DomU with a Reiser FS, I need to be able to use the initrd (I
> > know I can build support for Reiser into the kernel, but that is not
the
> > point).
> >
> > On Tue, 2005-07-26 at 11:18 +0200, Boris Lenzinger wrote:
> > > Hi,
> > >
> > > I had this problem (well I think it was the same): you do not
have
> > > enough free memory to run your instance.
> > >
> > > run:
> > > xm info
> > >
> > > It will tell you how much free memory you have.
> > > First solution is to decrease the memory in the configuration to
check
> > > if you can run your configuration.
> > > If it is working (and you need more memory), decrease memory of
dom0.
> > >
> > > If still not working, what is the log file saying ?
(/var/log/xend.log
> > > on a fedora distribution)
> > >
> > > Boris
> > >
> > > Li Ge wrote:
> > >
> > > > Hi,
> > > > I added ramdisk option in domU config file to let it load
initrd when
> > > > domU is booting up. I got the follow error message:
> > > >
> > > > # xm create /root/vm1.cfg -c
> > > > Using config file "/root/vm1.cfg".
> > > > Error: Error creating domain: (0, ''Error'')
> > > >
> > > > When I commented the ramdisk option out, the problem went
away and I
> > > > could start domU without a problem. Here is the domU config
file I
> > used:
> > > >
> > > > # Kernel image file.
> > > > kernel = "/boot/vmlinuz-2.6-xenU"
> > > >
> > > > # Optional ramdisk.
> > > > #ramdisk = "/boot/initrd-2.6.12-xenU-reiserFS"
> > > > ramdisk = "/boot/initrd-2.6.12-xenU"
> > > >
> > > > # Initial memory allocation (in megabytes) for the new
domain.
> > > > memory = 128
> > > >
> > > > # A name for your domain. All domains must have different
names.
> > > > name = "vm1"
> > > >
> > > > disk = [ ''phy:sda7,hda1,w'' ]
> > > >
> > > > # Set if you want dhcp to allocate the IP address.
> > > > #dhcp="dhcp"
> > > > # Set netmask.
> > > > #netmask> > > > # Set default gateway.
> > > > #gateway> > > > # Set the hostname.
> > > > #hostname= "vm%d" % vmid
> > > >
> > > > # Set root device.
> > > > root = "/dev/hda1 ro"
> > > >
> > > > # Sets runlevel 4.
> > > > extra = "4"
> > > >
> > > > Could it be something I''ve missed? The xen version
is the
> > xen-unstable
> > > > tree with latest changeset 5814.
> > > >
> > > > Thanks,
> > > > Li
> > > >
> > > 
> >
>------------------------------------------------------------------------
> > > >
> > > >_______________________________________________
> > > >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
> > >
> > -- 
> > Regards,
> >
> > David F Barrera
> > Linux Technology Center
> > Systems and Technology Group, IBM
> >
> > "The wisest men follow their own direction. "
> >                                                        Euripides
> >
> >
> > _______________________________________________
> > 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
> -- 
Regards,

David F Barrera
Linux Technology Center
Systems and Technology Group, IBM

"The wisest men follow their own direction. "
                                                        Euripides


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Xen users - Jul 2005 - ramdisk option in domU config file does not work

[Xen-users] ramdisk option in domU config file does not work

Re: [Xen-users] ramdisk option in domU config file does not work

Re: [Xen-users] ramdisk option in domU config file does not work

Re: [Xen-users] ramdisk option in domU config file does not work

Re: [Xen-users] ramdisk option in domU config file does not work

Re: [Xen-users] ramdisk option in domU config file does not work

Re: [Xen-users] ramdisk option in domU config file does not work

Re: [Xen-users] ramdisk option in domU config file does not work

Re: [Xen-users] ramdisk option in domU config file does not work