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June 2014

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From:
SCHAER Frederic <[log in to unmask]>
Reply To:
SCHAER Frederic <[log in to unmask]>
Date:
Wed, 4 Jun 2014 10:01:52 +0000
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Ah nice...



Thanks, I'll look into that !



Regards



> -----Message d'origine-----

> De : [log in to unmask] [mailto:[log in to unmask]] De la part de

> Oleg Sadov

> Envoyé : mercredi 4 juin 2014 06:10

> À : [log in to unmask]

> Objet : Re: kernel upgrades : random kernel panics

> 

> For debugging you may try to use kdump:

> 

> https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/ch-

> kdump.html

> 

> On Tue, Jun 3, 2014 at 12:52 PM, SCHAER Frederic <[log in to unmask]> wrote:

> > Hi,

> >

> >

> >

> > This is not the first time it happens for us, and it again happened

> > yesterday : we rebooted our SL6 machines into a new kernel

> > (2.6.32-431.17.1.el6.x86_64), and *bam*, one of them got into kernel panic.

> >

> > Rebooting into the previous kernel works fine.

> >

> >

> >

> > Last time this happened, this was on a virtual machine (which is the exact

> > same VM as many other VMs which were fine, running SL6.5) : I uninstalled

> > the kernel, reinstalled it, rebooted : kernel panic.

> >

> > I zeroes the kernel files in /boot, suspecting there was something weird

> > with the filesystem, ran fsck, removed the kernel, reinstalled : kernel

> > panic.

> >

> > On that specific VM, I ended giving up on that kernel, and it appears that

> > it is finally happily booting on latest kernel 2.6.32-431.17.1.el6.x86_64

> > even if we did not fix the previous issue… ??

> >

> >

> >

> > This time, this is another physical machine (SL 6.3) which went into kernel

> > panic, and since it’s a core storage machine I did not have time to run as

> > many tests as with the VM or as when this previously appeared.

> >

> > I remember this already happened on SL5, and reinstalling “solved” the

> > issue…

> >

> >

> >

> > I’m wondering if others are facing this strange erratic behavior, and would

> > have ideas for debugging it ?

> >

> > For us, it appears this was one host  failing for 359 working…

> >

> >

> >

> > Thanks && regards

> >

> > Frederic


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