August 2016
Intermediate to advanced
468 pages
9h 53m
English
Content preview from Mastering KVM VirtualizationBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Enabling lockd
For image-based storage pools which are POSIX compliant, you can enable it easily by uncommenting lock_manager = "lockd" in /etc/libvirt/qemu.conf or on both hypervisors:
Now, enable and start the virtlockd service on both the hypervisors. Also, restart libvirtd on both the hypervisors.
# systemctl enable virtlockd; systemctl start virtlockd # systemctl restart libvirtd # systemctl status virtlockd
Starting vm1 on f22-02:
[root@f22-02]# virsh start vm1 Domain vm1 started
Starting the same vm1 on f22-01:
[root@f22-01]# virsh start vm1 error: Failed to start domain vm1 error: resource busy: Lockspace resource '/var/lib/libvirt/images/testvms/vm1.qcow2' is locked
Another method to enable lockd is to use a hash of the disk's file path. ...
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