exportfs and virsh hang on CentOS 7.5 kernel 3.10.0-862.x

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exportfs and virsh hang on CentOS 7.5 kernel 3.10.0-862.x

Post by Ben_Stanley » 2018/06/18 16:20:25

I'm having trouble with the Cents 7.5 kernels 3.10.0-862.x

I'm having the following problems that I have noticed so far:
* exportfs hangs
* virsh list hangs

I have been able to work around these problems by downgrading my kernel to 3.10.0-693.21.1.
When I downgrade, the problems disappear and everything works as expected.

Please find below the getinfo output for the two configurations tested.

getinfo 3.10.0-693.21.1.el7.x86_64 works

getinfo 3.10.0-862.3.3.el7.x86_64 fails

Also /var/log/messages for each kernel

/var/log/messages for boot 3.10.0-693.21.1.el7.x86_64 works

/var/log/messages for boot 3.10.0-862.3.3.el7.x86_64 fails

Could I please get some help to troubleshoot what is going on with the newer kernel, as staying with the old kernel is not a good solution!


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Re: exportfs and virsh hang on CentOS 7.5 kernel 3.10.0-862.x

Post by TrevorH » 2018/06/18 17:23:58

These are not generic problems that happen to everyone. I've just run exportfs -ra on my system here which is using 3.10.0-862.3.2.el7.x86_64 and it was fine. I also have a pair of machines at work that are running 7.5 and those are VM hosts pretty much exclusively managed using virsh and I've not seen problems there either.

I don't see anything useful in any of the output you've provided so far, sorry. Did you try using strace to attach to the hung process?
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