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Old 02-17-2019, 09:11 PM   #1
Chris Lin
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NFS over RDMA causes kernel crash on aarch64 CentOS7


Hi, recently I install NFS over RDMA on the Cavium ThunderX2 ARM server with CentOS7. The NFSv4 service and client started without problems. However, any file operations on the clients, mounted with options proto=rdma, will cause the server kernel crash with a single line error:

kernel:Internal error: Oops: 96000006 [#1]

Is this a known issue or does anyone know how to debug this ?

Many thanks,
Chris
 
Old 02-18-2019, 06:04 AM   #2
jsbjsb001
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Quote:
Originally Posted by Chris Lin View Post
Hi, recently I install NFS over RDMA on the Cavium ThunderX2 ARM server with CentOS7. The NFSv4 service and client started without problems. However, any file operations on the clients, mounted with options proto=rdma, will cause the server kernel crash with a single line error:

kernel:Internal error: Oops: 96000006 [#1]

Is this a known issue or does anyone know how to debug this ?

Many thanks,
Chris
Yeah, it looks like it is a known issue. It's a problem in the code, so unless you're a kernel developer, then I'm not sure how you would "debug it". Just so you know that's a kernel oops, which isn't quite the same thing as a kernel panic - the system stops altogether on a panic.

This is the most recent link I could see about the problem: https://bugzilla.redhat.com/show_bug.cgi?id=814822

There are some other links about the issue that describe people having the same problem as you on Google though.
 
  


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