perfSONAR User Q&A and Other Discussion

["Lixin Liu" <>]

Hi,

I had a similar problem yesterday on a non-perfSONAR host. After I booted
system to an old kernel, I found that initramfs file for the new kernel
was missing in /boot directory.

After I removed, then reinstalled the new kernel, the host was able to
boot correctly.

Hope this information is useful.

Cheers,

Lixin.

> -----Original Message-----
> From: 
> 
>  [
> ]
>  On Behalf Of Jason Zurawski
> Sent: April-11-14 10:37 AM
> To: Joshua Luke
> Cc: 
> ;
>  Shawn McKee; Sarah Williams; David Lesny
> Subject: Re: [perfsonar-user] OpenSSL Update - Kernel Panic
>
> Hi Joshua;
>
> Were there any messages preceding the 'RAMDISK' line below?
>
> Could you try booting into one of the other kernels on the system (doesn't
> matter if its web100 for now)?  We have not had any other reports of this
> nature, and that error could mean just about anything.
>
> If you are able to get in to the system via a different kernel, you may 
> want
> to verify things like if the disk has run out of space (in particular, the
> /boot partition).  If you can't get in via a different kernel, let us know
> and we see what else we can try.
>
> Thanks;
>
> -jason
>
> On Apr 11, 2014, at 1:20 PM, Joshua Luke 
> <>
>  wrote:
>
> > Hello,
> >
> > One of our perfSONAR nodes is not coming back up due to a kernel panic
> (see attached emails for full error message) after an OpenSSL update and
> reboot. The issue was not fixed on subsequent reboots.
> >
> > If this issue has been encountered by anyone previously, or if anyone 
> > has
> any experience with this, your thoughts or advice would be appreciated.
> >
> > In the attached emails below is all the details that I have personally,
> but if you need more, Shawn, Sarah, or Dave (all CC'd) should be able to
> provide you with them.
> >
> > Thank you,
> > Joshua Luke
> >
> >
> >
> > ---------- Forwarded message ----------
> > From: Joshua Luke 
> > <>
> > Date: Fri, Apr 11, 2014 at 11:23 AM
> > Subject: Re: IU perfSONAR bandwidth node is down?
> > To: David Lesny 
> > <>
> > Cc: Shawn McKee 
> > <>,
> >  Sarah Williams 
> > <>
> >
> >
> > Dave,
> >
> > iut2-net2 is experiencing a kernel panic (full error text at the end of
> this email). I'm not sure what needs to be done to remedy this. I was able
> to boot into the other options on the GRUB menu.
> >
> > Error message:
> >
> > RAMDISK: incomplete write (3107 != 32768)
> > write error
> > Kernel panic - not syncing: VFS: Unable to mount root fs on unkown-
> block(0,0)
> > Pid: 1, comm: swapper Not tainted 2.6.32-431.11.2.e16.aufs.web100.x86_64
> #1
> > Call Trace: [I don't think you need this, so I'm omitting it]
> >
> > - Josh
> >
> >
> > On Fri, Apr 11, 2014 at 8:57 AM, David Lesny 
> > <>
> >  wrote:
> > Joshua,
> >
> > iut2-net2.iu.edu seems to have have not booted after the update of 
> > openssl
> (and a reboot)
> >
> > Could you have a look at it today and see why it did not return to 
> > service.
> >
> > thanks, dave
> >
> >
> >
> >
> > On 4/11/2014 7:44 AM, Shawn McKee wrote:
> >> Hi  Sarah,  Dave,
> >>
> >> The  IU perfSONAR-PS bandwidth  node seems  to  be down?
> >>
> >> Can  someone check  it?  Thanks,
> >>
> >> Shawn