Messages in this thread | | | Date | Wed, 4 Jan 2017 14:30:15 -0800 | From | Shaohua Li <> | Subject | Re: PROBLEM: Kernel BUG with raid5 soft + Xen + DRBD - invalid opcode |
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On Fri, Dec 23, 2016 at 07:25:56PM +0100, MasterPrenium wrote: > Hello Guys, > > I've having some trouble on a new system I'm setting up. I'm getting a kernel BUG message, seems to be related with the use of Xen (when I boot the system _without_ Xen, I don't get any crash). > Here is configuration : > - 3x Hard Drives running on RAID 5 Software raid created by mdadm > - On top of it, DRBD for replication over another node (Active/passive cluster) > - On top of it, a BTRFS FileSystem with a few subvolumes > - On top of it, XEN VMs running. > > The BUG is happening when I'm making "huge" I/O (20MB/s with a rsync for example) on the RAID5 stack. > I've to reset system to make it work again.
what did you mean 'huge' I/O (20M/s)? Is it possible you can reproduce the issue with a raw raid5 raid? It would be even better if you can give me a fio job file with the issue, so I can easily debug it.
also please check if upstream patch (e8d7c33 md/raid5: limit request size according to implementation limits) helps.
Thanks, Shaohua
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