Hi Andrei,
I think it's because snapshots jobs block the job-queue for other items for the KVM agent (host), other jobs don't get the opportunity to finish. Are you facing this with a particular VM/volume or in general with any VM/host? If you think the issue is related to the CloudStack version, you may downgrade to 4.9.2.0 and retry. Alternatively, compare against a test 4.9.2.0 and 4.9.3.0 environment and help report a ticket/bug with more details. Thanks. Regards, Rohit Yadav Software Architect, ShapeBlue http://rohityadav.cloud | @rhtyd __?.o/ Apache CloudStack ( )# The best IaaS cloud platform (___(_) https://cloudstack.apache.org ________________________________ From: Andrei Mikhailovsky <and...@arhont.com.INVALID> Sent: Thursday, December 21, 2017 6:11:22 PM To: users Subject: kvm/ceph volume snapshots cause other jobs to fail Hello everyone, I have noticed after the recent upgrade to 4.9.3.0 I started having a problem. While the volume snapshots (kvm with ceph primary storage) take place, I am unable to do most things within ACS. For example, stopping / starting / migrating vms simply time out. I have done some testing and this seems to be related to the volume snapshots. If I wait for the snapshot to finish, or if I manually kill the qemu-img process on the host server, the operations resume to normal. VMs operations can work just as before. However, as soon as the snapshot schedule kicks in the next snapshot job, ACS becomes unfunctional again. Could you please let me know if there is a workaround for this bug? thanks Andrei rohit.ya...@shapeblue.com www.shapeblue.com 53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue
