On Tue, 2012-08-28 at 14:15 -0700, Freddie Cash wrote: > On Tue, Aug 28, 2012 at 1:26 PM, Ross Boylan <r...@biostat.ucsf.edu> wrote: > > My vm launches with -hda /dev/turtle/VD0 -hdb /dev/turtle/VD1, where VD0 > > and VD1 are lvm logical volumes. I used lvextend to expand them, but > > the VM, started after the expansion, does not seem to see the extra > > space. > > You've increased the size of the hard drive, but you haven't changed > the filesystem on top of the hard drive to use that extra space. > > How you do that depends on whether the virtual disks are partitioned > with filesystems in the partitions; or formatted with a filesystem > directly. The virtual disks are partitioned. > > If they are partitioned, then you need to boot off a LiveCD, extend > the partition, then extend the filesystem in the partition. So I edit the parition table directly? I thought there might be some meta-information that kvm used to establish the size of the physical disk.
I'm not sure what the final sector number should be; I could get it approximately from the size, but I'm not sure my calculation would be just right. > > If they are formatted directly, then (depending on the filesystem) you > can grow the filesystem. Some filesystems can't be extended live, so > you have to boot to a LiveCD. > > No fancy VM-related tools required. Just think in terms of real, > physical hardware, and it all becomes clear. :) My real physical disks have never grown spontaneously. :) I also wasn't sure how the kernel would react, and so I shut it down during the growth. Ross -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
