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Re: [Xen-users] increase size for dom guest using lvm online
| To: | Xen User-List <xen-users@xxxxxxxxxxxxxxxxxxx> |
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| Subject: | Re: [Xen-users] increase size for dom guest using lvm online |
| From: | "Fajar A. Nugraha" <fajar@xxxxxxxxx> |
| Date: | Wed, 19 Aug 2009 13:55:45 +0700 |
| Delivery-date: | Tue, 18 Aug 2009 23:56:27 -0700 |
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On Sun, Aug 16, 2009 at 6:25 PM, James Harper<james.harper@xxxxxxxxxxxxxxxx> wrote: >> >> could we increase the size for dom guest online without rebooting or >> unmounting? > > For a PV DomU (or a HVM DomU using PV drivers), there is no mechanism > for the backend (Dom0) to notify the frontend (DomU) of a change in > device size. I suspect that HVM DomU's have the same problems. > > So no, it cannot be done without rebooting. There's a workaround, actually. For PV domU anyway. While you cannot get domU to pickup device size change online, you CAN attach new block device. So if you use LVM on domU as well, you can simply attach a new block device, add it as new PV, then extend domU's LV. So you get the ability to grow domU's storage online at the cost of extra complexity (having LVM on domU). -- Fajar _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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