[ceph-users] Re : Re : bad crc/signature errors

[Olivier Bonvalet]

Le jeudi 05 octobre 2017 à 17:03 +0200, Ilya Dryomov a écrit :
> When did you start seeing these errors?  Can you correlate that to
> a ceph or kernel upgrade?  If not, and if you don't see other issues,
> I'd write it off as faulty hardware.

Well... I have one hypervisor (Xen 4.6 and kernel Linux 4.1.13), which
have the problem for a long time, at least since 1 month (I haven't
older logs).

But, on others hypervisors (Xen 4.8 with Linux 4.9.x), I haven't the
problem.
And it's when I upgraded thoses hypervisors to Linux 4.13.x, that "bad
crc" errors appeared.

Note : if I upgraded kernels on Xen 4.8 hypervisors, it's because some
DISCARD commands over RBD were blocking ("fstrim" works, but not
"lvremove" with discard enabled). After upgrading to Linux 4.13.3,
DISCARD works again on Xen 4.8.


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[ceph-users] Re : Re : bad crc/signature errors

[Olivier Bonvalet]

Le jeudi 05 octobre 2017 à 11:10 +0200, Ilya Dryomov a écrit :
> On Thu, Oct 5, 2017 at 9:03 AM, Olivier Bonvalet  > wrote:
> > I also see that, but on 4.9.52 and 4.13.3 kernel.
> > 
> > I also have some kernel panic, but don't know if it's related (RBD
> > are
> > mapped on Xen hosts).
> 
> Do you have that panic message?
> 
> Do you use rbd devices for something other than Xen?  If so, have you
> ever seen these errors outside of Xen?
> 
> Thanks,
> 
> Ilya
> 

No, I don't have that panic message : the hosts reboots way too
quickly. And no, I only use this cluster with Xen.

Sorry for this useless answer...

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