NFS mounted disk images

DISCUSSION Magicboiz 3 participants 5 messages Aug 30, 2007 – Sep 3, 2007 3 messages not in the archive KVM

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Magicboiz

author

2007-08-30 12:51 UTC #0 lore raw

Hello list,

when I try to run a virtual machins with disk images stored into NFS mounted directories, the virtual machine cannot use the IDE disk as expected. This happens with linux(debian/centos) and other OS, like OpenBSD, OpenSolaris(nexenta), etc. For example, during installation of guest oses, they cannot partition the disk.

This is how I run KVM:

sudo /usr/local/bin/qemu-system-x86_64 -m 256 -boot d -cdrom /mnt/debian-40r1-i386-netinst.iso -hda /mnt/disco.img -net nic -net tap,ifname=tap0,script=qemu-ifup

And this is my NFS mounted partition:

10.172.224.3:/export on /mnt type nfs
(rw,tcp,rsize=8192,wsize=8192,addr=10.172.224.3)

kernel: 2.6.22 /Ubuntu Gutsy 2.6.22-10-generic
KVM 36

Do you know what's happening?? Pherhaps i'm doing something wrong....??

Regards.

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Gilad Ben-Yossef

2007-08-30 13:34 UTC #1 lore raw

Quoted 15 lines · Magicboiz

Hello list,
when I try to run a virtual machins with disk images stored into NFS mounted directories, the virtual machine cannot use the IDE disk as expected. This happens with linux(debian/centos) and other OS, like OpenBSD, OpenSolaris(nexenta), etc. For example, during installation of guest oses, they cannot partition the disk.
This is how I run KVM:
sudo /usr/local/bin/qemu-system-x86_64 -m 256 -boot d
(quoted diff) +0 -2
-cdrom /mnt/debian-40r1-i386-netinst.iso -hda /mnt/disco.img -net nic
-net tap,ifname=tap0,script=qemu-ifup 

Quoted 4 lines

And this is my NFS mounted partition:
10.172.224.3:/export on /mnt type nfs
(rw,tcp,rsize=8192,wsize=8192,addr=10.172.224.3)

Just guessing here, but you probably need to add "no_root_squash" to the options above.

Please note that no_root_squash can be considered a security risk under most circumstances.

Gilad

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Magic Boiz

author

2007-08-30 14:15 UTC #3 lore raw

no_root_squash is enabled in the nfs server.
:((

thx

Quoted 25 lines · Gilad Ben-Yossef

Quoted 15 lines · Magicboiz
Hello list,
when I try to run a virtual machins with disk images stored into NFS mounted directories, the virtual machine cannot use the IDE disk as expected. This happens with linux(debian/centos) and other OS, like OpenBSD, OpenSolaris(nexenta), etc. For example, during installation of guest oses, they cannot partition the disk.
This is how I run KVM:
sudo /usr/local/bin/qemu-system-x86_64 -m 256 -boot d
(quoted diff) +0 -2
-cdrom /mnt/debian-40r1-i386-netinst.iso -hda /mnt/disco.img -net nic
-net tap,ifname=tap0,script=qemu-ifup
Quoted 4 lines
And this is my NFS mounted partition:
10.172.224.3:/export on /mnt type nfs
(rw,tcp,rsize=8192,wsize=8192,addr=10.172.224.3)
Just guessing here, but you probably need to add "no_root_squash" to the options above.

Quoted 6 lines

Please note that no_root_squash can be considered a security risk under most circumstances.
Gilad

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https://lists.sourceforge.net/lists/listinfo/kvm-devel

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Avi Kivity

2007-09-01 14:26 UTC #5 lore raw

Quoted 1 line · Magic Boiz

no_root_squash is enabled in the nfs server.

do you actually have write access?

Quoted 59 lines

:((
thx
On 8/30/07, *Gilad Ben-Yossef* <[email protected] <mailto:[email protected]>> wrote:
Magicboiz wrote:
> Hello list,
>
> when I try to run a virtual machins with disk images stored into NFS
> mounted directories, the virtual machine cannot use the IDE disk as > expected. This happens with linux(debian/centos) and other OS, like > OpenBSD, OpenSolaris(nexenta), etc. For example, during installation of
> guest oses, they cannot partition the disk.
>
> This is how I run KVM:
>
> sudo /usr/local/bin/qemu-system-x86_64 -m 256 -boot d
> -cdrom /mnt/debian-40r1-i386-netinst.iso -hda /mnt/disco.img -net nic
> -net tap,ifname=tap0,script=qemu-ifup
>
>
> And this is my NFS mounted partition:
>
> 10.172.224.3:/export on /mnt type nfs
> (rw,tcp,rsize=8192,wsize=8192,addr= 10.172.224.3
<http://10.172.224.3>)
Just guessing here, but you probably need to add "no_root_squash" to the
options above.
Please note that no_root_squash can be considered a security risk under
most circumstances.
Gilad
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Signature · 8 lines

Any sufficiently difficult bug is indistinguishable from a feature.


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Magicboiz

author

2007-09-03 07:10 UTC #7 lore raw

yes, I do.......

in fact, a windows xp sp2 guest, can boot, install and run perfectly.

Quoted 66 lines · Avi Kivity

Quoted 1 line · Magic Boiz
no_root_squash is enabled in the nfs server.
do you actually have write access?
Quoted 59 lines
:((
thx
On 8/30/07, *Gilad Ben-Yossef* <[email protected] <mailto:[email protected]>> wrote:
Magicboiz wrote:
> Hello list,
>
> when I try to run a virtual machins with disk images stored into NFS
> mounted directories, the virtual machine cannot use the IDE disk as > expected. This happens with linux(debian/centos) and other OS, like > OpenBSD, OpenSolaris(nexenta), etc. For example, during installation of
> guest oses, they cannot partition the disk.
>
> This is how I run KVM:
>
> sudo /usr/local/bin/qemu-system-x86_64 -m 256 -boot d
> -cdrom /mnt/debian-40r1-i386-netinst.iso -hda /mnt/disco.img -net nic
> -net tap,ifname=tap0,script=qemu-ifup
>
>
> And this is my NFS mounted partition:
>
> 10.172.224.3:/export on /mnt type nfs
> (rw,tcp,rsize=8192,wsize=8192,addr= 10.172.224.3
<http://10.172.224.3>)
Just guessing here, but you probably need to add "no_root_squash" to the
options above.
Please note that no_root_squash can be considered a security risk under
most circumstances.
Gilad
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