v1.0.2

add support ofport for domianinterface

v1.0.1

Add Support retry interval/timeout for DomainDiskDriver

Overview
When a storage fault occurs (for example, the storage link is disconnected), the I/O error of the physical disk is sent to the VM front end through the virtualization layer. The VM receives the I/O error. As a result, the user file system in the VM may change to the read-only state. In this case, the VM needs to be restarted or the user needs to manually restore the file system, which brings extra workload to users.

In this case, the virtualization platform provides the disk I/O suspension capability. That is, when the storage device is faulty, the VM I/Os are suspended when being delivered to the host. During the suspension period, no I/O error is returned to the VM. In this way, the file system in the VM does not change to the read-only state due to I/O errors. Instead, the file system is suspended. At the same time, the VM backend retries I/Os based on the specified suspension interval. If the storage fault is rectified within the suspension period, the suspended I/Os can be flushed to disks, and the internal file system of the VM automatically recovers without restarting the VM. If the storage fault is not rectified within the suspension period, an error is reported to the VM and the user is notified.

It would be useful to I/O suspension, as follow:
Disk I/O suspension can be enabled for read and write I/O errors separately. The retry interval and timeout interval for read and write I/O errors of the same disk are the same.
The disk I/O suspension retry interval does not include the actual read/write I/O overhead on the host. That is, the actual interval between two I/O retries is greater than the configured I/O error retry interval.

v1.0.0

forked from https://github.com/libvirt/libvirt-go-xml