On 09/28/2009 06:37 PM, Fabian Arrotin wrote: > Dennis J. wrote: >> Hi, >> Is there a way to make a PV xen guest aware of a size change of the host >> disk? In my case I'm talking about a Centos 5.3 host using logical volumes >> as storage for the guests and the guests running Centos 5.3 and LVM too. >> What I'm trying to accomplish is to resize the logical volume for the guest >> by adding a few gigs and then make the guest see this change without >> requiring a reboot. Is this possible maybe using some kind of bus rescan in >> the guest? >> > > No, it's not possible unfortunately. On a traditionnal SCSI bus you can > rescan the whole bus to see newer/added devices or just the device to > see newer size, but not on a Xen domU . > At least that's what i found when i blogged about that . See that thread > on the Xen list : > http://lists.xensource.com/archives/html/xen-users/2008-04/msg00246.html > > So what i do since then is to use lvm in the domU as well and add a new > xvd block device to the domU (aka a new LV on the dom0) and then the > traditionnal pvcreate/vgextend/lvextend. Working correctly for all my > domU's .. I just tested this and it works great, thanks! Regards, Dennis