On Fri, Apr 12, 2019 at 05:47:55PM -0700, Sureshkumar Kaliannan wrote: > Bulk of the write to the "-sda" file completed within 15-20 mins although > sshd/qemu-img receives constant stream of data from the nbd-server > I'm not sure if this is because of "sparseness" (Not sure if the > sparsifying is handled on the nbd-server side or on the receiving side)
Hard to say what's going on, but I can tell you about sparseness. If all of the following apply: - it's Windows >= Vista / 7 - you use the default partition alignment chosen by Windows at install time - the Windows disk contains mainly regular filesystems, not raw/unused/data partitions, and not Dynamic Disks - you're using not ancient ntfs-3g[1] then virt-v2v is able to skip reading all sparse / unused / deleted parts of the Windows disk. It should skip over them immediately -- ie. nothing needs to read them at all. Rich. [1] https://www.mail-archive.com/[email protected]/msg01060.html -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://people.redhat.com/~rjones/virt-df/ _______________________________________________ Libguestfs mailing list [email protected] https://www.redhat.com/mailman/listinfo/libguestfs
