Tag Archives: virt-log

libguestfs 1.28 released

The new stable version of libguestfs — a C library and tools for accessing and modifying virtual machine disk images — has been released.

There is one brand new tool, virt-log. And I rewrote the virt-v2v and virt-p2v tools. These tools convert VMware and Xen guests and physical machines, to run on KVM. They are now much faster and better than before.

As well as that there are hundreds of other improvements and bug fixes. For a full list, see the release notes.

Libguestfs 1.28 will be available shortly in Fedora 21, Debian/experimental, RHEL and CentOS 7, and elsewhere.

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New in libguestfs: virt-log

In libguestfs ≥ 1.27.17, there’s a new tool called virt-log for displaying the log files from a disk image or virtual machine:

$ virt-log -a disk.img | less

Previously you could write:

$ virt-cat -a disk.img /var/log/messages

That worked for some Linux guests, but several things happened:

Virt-log is designed to do the right thing automatically (although at the moment Windows support is not finished). In particular it will automatically decode and display the systemd journal, and it knows the different locations that some Linux distros store their plain text log files.

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