Xen Nic missing after reboot ,10 hosts

[Peter Zhai <pe...@gmail.com>]

Hello,

My cloudstack 4.02 environment has 10 Xen 6.0 hosts ,i did not change
anything lately but start from last week ,many of my Xen hosts will lost
NIC after reboot ,which caused the VM instance on those hosts are not able
to start also.

I guess it is not pool master issue because some of the slave host still
function . I installed all the Xen server hotfix i can found but it did not
help at all .

There is still enough disk space on host .

Any one met the same issue before on Xen host ??  or KVM is more stable
than Xen ?


Peter

Re: Xen Nic missing after reboot ,10 hosts

[Peter Zhai <pe...@gmail.com>]

Thank you ,Carlos. I just rest all the nic in the same cluster and now it
back to normal.


On Thu, Dec 5, 2013 at 12:31 PM, Carlos Reátegui <cr...@gmail.com>wrote:

> Hi Peter
> I experienced a similar problem. I believe it is due to interface renaming
> that happens at boot. Unfortunately I don't have access to my machines so I
> can't check the specific thing you need to do but do a search for
> "XenServer interface rename" and hopefully you'll get enough pointers. If I
> remember correctly I had to edit a file that is used by the rename process
> to set it to my original nic. Eg eth1 had been turned into eth13. This
> happened with 5 of my 8 nics. After putting them all back, I rebooted and
> was back in business.
>
> Hope this helps
> Carlos
>
> > On Dec 5, 2013, at 3:15 PM, Peter Zhai <pe...@gmail.com> wrote:
> >
> > Hello,
> >
> > My cloudstack 4.02 environment has 10 Xen 6.0 hosts ,i did not change
> > anything lately but start from last week ,many of my Xen hosts will lost
> > NIC after reboot ,which caused the VM instance on those hosts are not
> able
> > to start also.
> >
> > I guess it is not pool master issue because some of the slave host still
> > function . I installed all the Xen server hotfix i can found but it did
> not
> > help at all .
> >
> > There is still enough disk space on host .
> >
> > Any one met the same issue before on Xen host ??  or KVM is more stable
> > than Xen ?
> >
> >
> > Peter
>

Re: Xen Nic missing after reboot ,10 hosts

[Carlos Reátegui <cr...@gmail.com>]

Hi Peter
I experienced a similar problem. I believe it is due to interface renaming that happens at boot. Unfortunately I don't have access to my machines so I can't check the specific thing you need to do but do a search for "XenServer interface rename" and hopefully you'll get enough pointers. If I remember correctly I had to edit a file that is used by the rename process to set it to my original nic. Eg eth1 had been turned into eth13. This happened with 5 of my 8 nics. After putting them all back, I rebooted and was back in business. 

Hope this helps
Carlos

> On Dec 5, 2013, at 3:15 PM, Peter Zhai <pe...@gmail.com> wrote:
> 
> Hello,
> 
> My cloudstack 4.02 environment has 10 Xen 6.0 hosts ,i did not change
> anything lately but start from last week ,many of my Xen hosts will lost
> NIC after reboot ,which caused the VM instance on those hosts are not able
> to start also.
> 
> I guess it is not pool master issue because some of the slave host still
> function . I installed all the Xen server hotfix i can found but it did not
> help at all .
> 
> There is still enough disk space on host .
> 
> Any one met the same issue before on Xen host ??  or KVM is more stable
> than Xen ?
> 
> 
> Peter

Fwd: Xen Nic missing after reboot ,10 hosts

[Peter Zhai <pe...@gmail.com>]

Hello,

My cloudstack 4.02 environment has 10 Xen 6.0 hosts ,i did not change
anything lately but start from last week ,many of my Xen hosts will lost
NIC after reboot ,which caused the VM instance on those hosts are not able
to start also.

I guess it is not pool master issue because some of the slave host still
function . I installed all the Xen server hotfix i can found but it did not
help at all .

There is still enough disk space on host .

Any one met the same issue before on Xen host ??  or KVM is more stable
than Xen ?


Peter