On Thu, Jun 05, 2008 at 07:42:10PM +0100, Richard W.M. Jones wrote:

This patch adds support for virDomainBlockPeek over remote. Also adds a QEMU driver implementation. Also there is a minor fix in the Xen driver impl.

The latest virt-df has been updated to use this call, with the remote & QEMU support, so I'm confident this is at least somewhat working. A trace of virt-df running with LIBVIRT_DEBUG=1 is below. Rich. ---------------------------------------------------------------------- $ LIBVIRT_DEBUG=1 ./virt-df/virt-df.opt -a -h DEBUG: libvirt.c: virInitialize (register drivers) DEBUG: libvirt.c: virConnectOpenReadOnly (name=(null)) DEBUG: libvirt.c: do_open (Probed qemu:///session) DEBUG: libvirt.c: do_open (Using qemu:///session as default URI, 1 hypervisor found) DEBUG: libvirt.c: do_open (name "qemu:///session" to URI components: scheme qemu opaque (null) authority (null) server (null) user (null) port 0 path /session ) DEBUG: libvirt.c: do_open (trying driver 0 (Test) ...) DEBUG: libvirt.c: do_open (driver 0 Test returned DECLINED) DEBUG: libvirt.c: do_open (trying driver 1 (QEMU) ...) DEBUG: libvirt.c: do_open (driver 1 QEMU returned DECLINED) DEBUG: libvirt.c: do_open (trying driver 2 (Xen) ...) DEBUG: libvirt.c: do_open (driver 2 Xen returned DECLINED) DEBUG: libvirt.c: do_open (trying driver 3 (remote) ...) DEBUG: remote_internal.c: doRemoteOpen (proceeding with name = qemu:///session) DEBUG: libvirt.c: do_open (driver 3 remote returned SUCCESS) DEBUG: libvirt.c: do_open (network driver 0 Test returned DECLINED) DEBUG: libvirt.c: do_open (network driver 1 QEMU returned DECLINED) DEBUG: libvirt.c: do_open (network driver 2 remote returned SUCCESS) DEBUG: libvirt.c: do_open (storage driver 0 Test returned DECLINED) DEBUG: libvirt.c: do_open (storage driver 1 remote returned SUCCESS) DEBUG: libvirt.c: virConnectNumOfDomains (conn=0x6d69e0) DEBUG: libvirt.c: virConnectListDomains (conn=0x6d69e0, ids=0x7fff3eb3fd50, maxids=0) DEBUG: libvirt.c: virConnectNumOfDefinedDomains (conn=0x6d69e0) DEBUG: libvirt.c: virConnectListDefinedDomains (conn=0x6d69e0, names=0x7fff3eb3fd30, maxnames=1) DEBUG: libvirt.c: virDomainLookupByName (conn=0x6d69e0, name=rhel51x32kvm) DEBUG: hash.c: __virGetDomain (New hash entry 0x6d7dc0) DEBUG: libvirt.c: virDomainGetXMLDesc (domain=0x6d7dc0, flags=0) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=0, size=0, buffer=0x683290) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=0, size=512, buffer=0x2aaaaad87230) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=33280, size=1024, buffer=0x2aaaaad84320) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=106929664, size=1024, buffer=0x2aaaaad7f9a0) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=106928640, size=4096, buffer=0x2aaaaae24f80) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=106928640, size=4096, buffer=0x2aaaaae23f70) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=106928640, size=512, buffer=0x2aaaaad7db98) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=106928640, size=512, buffer=0x2aaaaad7d808) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=106928640, size=4608, buffer=0x2aaaaae22d60) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=106928640, size=4608, buffer=0x2aaaaae21b50) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=106935296, size=1114, buffer=0x2aaaaad7bf98) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=107126272, size=1024, buffer=0x2aaaaad714d8) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=7321329152, size=1024, buffer=0x2aaaaad6c240) DEBUG: libvirt.c: virDomainBlockPeek (domain=0x6d7dc0, path=/var/lib/xen/images/rhel51x32kvm.img, offset=7321328128, size=4096, buffer=0x2aaaaae143e0) Filesystem Size Used Available Type rhel51x32kvm:hda1 96.8 MiB 14.6 MiB 82.2 MiB Linux ext2/3 rhel51x32kvm:VolGroup00/LogVol00 6.4 GiB 3.6 GiB 2.8 GiB Linux ext2/3 rhel51x32kvm:VolGroup00/LogVol01 992.0 MiB Linux swap ---------------------------------------------------------------------- -- Richard Jones, Emerging Technologies, Red Hat http://et.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/