[Fixed To address] On Mon, Jun 20, 2011 at 07:59:47PM +0100, Richard W.M. Jones wrote: > I just pushed the virt-dmesg package to Fedora Rawhide[1]. > > http://koji.fedoraproject.org/koji/buildinfo?buildID=248890 > > This tool uses libvirt to let you list the kernel messages from a > Linux KVM guest without needing to log in or run any special agent in > the guest. It's useful when a guest crashes or gets stuck. > > Usage is pretty simple: > > # virt-dmesg F14x64 | head > <6>[ 0.000000] Initializing cgroup subsys cpuset > <6>[ 0.000000] Initializing cgroup subsys cpu > <5>[ 0.000000] Linux version 2.6.35.13-91.fc14.x86_64 (mockbuild@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx) (gcc version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC) ) #1 SMP Tue May 3 13:23:06 UTC 2011 > <6>[ 0.000000] Command line: ro root=/dev/mapper/vg_f13x64-lv_root rd_LVM_LV=vg_f13x64/lv_root rd_LVM_LV=vg_f13x64/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=uk rhgb quiet > <6>[ 0.000000] BIOS-provided physical RAM map: > <6>[ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f400 (usable) > <6>[ 0.000000] BIOS-e820: 000000000009f400 - 00000000000a0000 (reserved) > <6>[ 0.000000] BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) > <6>[ 0.000000] BIOS-e820: 0000000000100000 - 000000003fffd000 (usable) > <6>[ 0.000000] BIOS-e820: 000000003fffd000 - 0000000040000000 (reserved) > > In some cases virt-dmesg won't be able to find the symbol table, in > which case you can fall back to dumping out the kernel and grepping > it, eg: > > # virt-dmesg --dump-kernel F14x64 | strings | grep '^<[0-9]>' | less > > There's an accompanying tool called virt-uname which does what you > would think: > > # virt-uname F14x64 > Linux f14x64.home.annexia.org 2.6.35.13-91.fc14.x86_64 #1 SMP Tue May 3 13:23:06 UTC 2011 x86_64 (none) > > Please let me know if you find (Linux) guests for which virt-dmesg > doesn't work properly (particularly the --dump-kernel option which > ought to work for any Linux guest). Describe the guest as accurately > as you can and provide the output of 'virt-dmesg -v Guest'. > > Rich. > > [1] Sadly because of some regressions in libvirt, it *won't* work in > Fedora 15 or earlier unless you are able to upgrade to > libvirt >= 0.9.1-3. > > -- > Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones > virt-top is 'top' for virtual machines. Tiny program with many > powerful monitoring features, net stats, disk stats, logging, etc. > http://et.redhat.com/~rjones/virt-top -- Richard Jones, Virtualization Group, Red Hat http://people.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/ -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list