search for: setmaxdowntime

Hello guys! We have a lot of virtual machines and I recently tried out the migrate feature of libvirt. It works like a charm, even without shared storage, but when we try to migrate a VM under a little pressure (a HTTP server gets some 1-5 requests/sec) the migration process hangs at 99%. After we stop the stressing of the VM, the migration immediately finishes. I'm using the following

Hi, I'm experimenting with the migration function of virsh. I'm doing the migrate with following commands: virsh migrate --life --persistent --copy-storage-all --verbose --abort-on-error domain qemu+ssh://root@destination/system virsh migrate-setmaxdowntime domain 20000 However sometimes at the end of the migration, the guest isn't started on the destination host. So I'm left with a machine that had an improper shutdown... If a live migration isn't reliable, I'm thinking to migrate as such: - guest is still runing - copy or rsync the...

I am wondering what the default value for migrate-setmaxdowntime is when using QEMU/KVM. http://builder.virt-tools.org/artifacts/libvirt-virshcmdref/html/sect-migrate-setmaxdowntime.html Is the default the same as QEMU's default in this case? I was looking at libvirts source and it appears there is no default set within libvirt, unless I missed it. I do...

...wrote: > Hi, > > I'm experimenting with the migration function of virsh. I'm doing the > migrate with following commands: > > virsh migrate --life --persistent --copy-storage-all --verbose > --abort-on-error domain qemu+ssh://root@destination/system virsh > migrate-setmaxdowntime domain 20000 > > However sometimes at the end of the migration, the guest isn't started > on the destination host. So I'm left with a machine that had an > improper shutdown... > > If a live migration isn't reliable, I'm thinking to migrate as such: - > guest...

I would like to use the virDomainMigrateSetMaxDowntime but I'm a bit confused about how to use it. If I try to set the downtime before I call domain.migrate(), I get the error "domain is not being migrated". But I cannot call it afterwards because domain.migrate() does not return until the migration has completed. Am I meant to put the...

...a charm, even without shared storage, but when we try to > migrate a VM under a little pressure (a HTTP server gets some 1-5 > requests/sec) the migration process hangs at 99%. The maxdowntime is probably too low for the migration to complete. Try setting it to a higher value : virsh migrate-setmaxdowntime <domain> <seconds> Please tell me if it worked.

Hello, I'd like to know if this is an hypervisor related problem or a libvirt one. I did this experiment: on VM I started watching a video on youtube. While video was in progress I started migration. Migration did not complete until video was not finished. I did another experiment: I installed a web server on VM. I then started an httperf stress test. As before migration did not complete