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 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
