[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] several domU crashes after 4.1->4.8 live migration
On Thu, Feb 2, 2017 at 1:30 PM, Vincent Legout <vincent.legout@xxxxxxxxx> wrote: > On Thu, Feb 02, 2017 at 12:05:09PM +0000, Andrew Cooper wrote : >> On 02/02/17 07:58, Vincent Legout wrote: >> > Hello, >> > >> > We had some issues after live migrating several domU from xen 4.1 to xen >> > 4.8. We migrated around 200 domU and 5 crashed, from a few hours up to >> > several days after the migration. All the domU had more than 1 year of >> > uptime, and for example one crashed several days after the migration >> > during a high load period. >> > >> > All 5 domU are running a 3.10 kernel (from 3.10.44 to 3.10.103). They >> > have between 2GB and 16GB of RAM, and between 1 and 4 vCPUS. >> > >> > We use 3 types of machines (several PowerEdge C6100 (Intel L5640) and >> > R710 (Intel L5520), and one C8220 (Intel E5-2650)). The C6100 and R710 >> > have 24 logical cores with HT enabled. The PowerEdge C8220 is only used >> > for Xen 4.8, and has 32 logical cores with HT enabled. The C6100 and the >> > R710 have 50GB of RAM, and the C8220 128GB. The xen 4.1 dom0 is running >> > a 3.4.69 kernel, and the xen 4.8 one a 4.1.37 kernel. >> > >> > I've attached the most relevant parts of the domU kernel logs we could >> > get. It seems the crashes came from different components of the kernel, >> > though most of them seem to be related to memory. >> > >> > Would anyone have any idea if that's something that could be fixed? Or >> > is it just that migrating from 4.1 to 4.8 is not supported? >> >> Do the VMs migrate normally in production? > > Thanks for the comment. Yes, the migrations took place normally, at > least we didn't see anything wrong then. These crashes happened randomly > on a few VMs only, and at least a few hours after the migration. Sorry, I just want to clarify: Is it the case that before you tried to upgrade, you often migrated VMs between your Xen 4.1 hosts without problems? In other words, is it *4.8* that's the problem, or is it *migration* that's the problem? -George _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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