How to add a disk to exist instance?

[higkoo]

I want to add a new disk to an exist instance.

What can I do for this?

Thanks

[chamambom]

for all my instances that needed resizing ,i always used this link

http://michael.orlitzky.com/articles/resizing_a_kvm_or_qemu_disk_image.php

i am not too sure if that functionality is yet in webvirt ,

On Fri, Jul 17, 2015 at 12:33 PM, 楷子狐 notifications@github.com wrote:

I want to add a new disk to an exist instance.

What can I do for this?

Thanks

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Reply to this email directly or view it on GitHub
#569.

[rainsun]

I think you should create a new disk from storage page, and add this disk into the xml file of this server.
then reboot it, you will find everything is ok.

[yorks]

There is no need to reboot, attach disk online is support by libvirt.
I added this function to my own virtMgr, like that:

$ git diff instance.py
...
+    def _attach_device(self, xml):
+        ret = self.instance.attachDevice( xml )
+        if self.get_status() == 1:
+            xmldom = self._XMLDesc(VIR_DOMAIN_XML_SECURE)
+            self._defineXML(xmldom)
+        return ret
+    def attach_disk(self, dtype, path, dev):
+        xml = """<disk type='file' device='disk'>
+                    <driver name='qemu' type='%s' cache='none'/>
+                    <source file='%s'/>
+                    <target dev='%s' bus='virtio'/>
+                 </disk> """ % (dtype, path, dev)
+        return self._attach_device( xml )

you can using: vrtManager.create.wvmCreate.create_volume to create the img,
and then using: vrtManager.instance.wvmInstance.attach_disk to attach the img to the instance.