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Wido den Hollander closed CLOUDSTACK-7641. ------------------------------------------ Resolution: Fixed Merged into master > Do not always ask libvirt to refresh storage pools > -------------------------------------------------- > > Key: CLOUDSTACK-7641 > URL: https://issues.apache.org/jira/browse/CLOUDSTACK-7641 > Project: CloudStack > Issue Type: Improvement > Security Level: Public(Anyone can view this level - this is the > default.) > Components: KVM > Affects Versions: Future > Reporter: Wido den Hollander > Assignee: Wido den Hollander > Priority: Minor > Labels: ceph, libvirt, rbd > Fix For: 4.5.0 > > > When getStoragePool() in the LibvirtStorageAdapter is called it asks libvirt > for information regarding that storage pool. > In the process the StorageAdapter asks libvirt to 'refresh' the storage pool. > Refreshing a storage pool means that libvirt will scan the whole pool and get > information about all the volumes which it then caches. > getStoragePool() is called for almost every storage operation in KVM and that > causes delays. > On big (RBD) storage pools such a refresh can take up to 2 or 3 minutes. > The StatsCollector in the Management Server asks all the hosts about the > storage pools as well, so we should only refresh the pool when the > StatsCollector wants storage statistics. > This way we keep the information in libvirt up to date, but we also speed up > storage tasks on KVM. -- This message was sent by Atlassian JIRA (v6.3.4#6332)