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From: | Peter Lieven |
Subject: | Re: [Qemu-devel] kvmclock_current_nsec: Assertion `time.tsc_timestamp <= migration_tsc' |
Date: | Tue, 10 Feb 2015 11:24:52 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 |
Am 10.02.2015 um 11:17 schrieb Paolo Bonzini:
On 10/02/2015 11:03, Peter Lieven wrote:My hope was that anyone has observed this post 2.2.0 already and there is a fix available ;-) Can you indicate what info would be helpful debugging this? Cmdline is: /usr/bin/qemu-2.2.0 -enable-kvm -M pc-i440fx-2.1 -nodefaults -netdev type=tap,id=guest19,script=no,downscript=no,ifname=tap19,vnet_hdr -device virtio-net-pci,netdev=guest19,mac=52:54:00:80:00:55 -netdev type=tap,id=guest20,script=no,downscript=no,ifname=tap20,vnet_hdr -device virtio-net-pci,netdev=guest20,mac=52:54:00:80:00:6f -netdev type=tap,id=guest21,script=no,downscript=no,ifname=tap21,vnet_hdr -device virtio-net-pci,netdev=guest21,mac=52:54:00:80:00:75 -serial null -parallel null -m 496 -monitor tcp:0:4011,server,nowait -vnc :11 -qmp tcp:0:3011,server,nowait -name 'gw-5000123' -boot order=nc,menu=on -drive index=2,media=cdrom,if=ide,cache=unsafe,aio=native,readonly=on -k de -incoming tcp:0:5011 -pidfile /var/run/qemu/vm-115.pid -mem-path /hugepages -mem-prealloc -rtc base=utc -usb -usbdevice tablet -no-hpet -vga vmware -cpu qemu64First of all (but unrelated to the bug) do not use "-cpu qemu64" with KVM.
I remember there was an issue with kvm64 anytime in the past, but this is ages ago I think. I will change that for new vserver starts. What (which flag) is the exact issue with qemu64 vs. kvm64
Second, what downtime or bandwidth setting? What is the actual downtime? Can you print time.tsc_timestamp and migration_tsc on the destination?
From my logs: migrate_set_speed 1200M migrate_set_capability auto-converge on migrate_set_capability xbzrle off The max_downtime was default. I will add debugging output around that assertion and try to reproduce. Thank you, Peter
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