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Copy Sparse files over network

I have a few physical nodes which I ran KVM guests on.  Occasionally I need to rebuild the host, so I want to copy the VM from one physical node to another.  I use RAW (sparse) disk images and standard scp would copy the image in it's entirety.  Until... I found rsync -S ;-)

rsync -Surpolvv * usgtst92:/var/lib/libvirt/images/

*** SOURCE ***
usgtst91 images]# for IMG in `find . -name "*.img"`; do qemu-img info $IMG; done
image: ./DVGLLVUSGTST82/DVGLLVUSGTST82.img
file format: raw
virtual size: 44G (47244640256 bytes)
disk size: 12G
image: ./DVGLLVUSGTST81/DVGLLVUSGTST81.img
file format: raw
virtual size: 44G (47244640256 bytes)
disk size: 4.0G
image: ./DVGLLVUSGTST83/DVGLLVUSGTST83.img
file format: raw
virtual size: 44G (47244640256 bytes)
disk size: 3.8G

*** DESTINATION ***
usgtst92 images]# for IMG in `find . -name "*.img"`; do qemu-img info $IMG; done
image: ./DVGLLVUSGTST83/DVGLLVUSGTST83.img
file format: raw
virtual size: 44G (47244640256 bytes)
disk size: 3.2G
image: ./DVGLLVUSGTST81/DVGLLVUSGTST81.img
file format: raw
virtual size: 44G (47244640256 bytes)
disk size: 3.4G
image: ./DVGLLVUSGTST82/DVGLLVUSGTST82.img
file format: raw
virtual size: 44G (47244640256 bytes)
disk size: 11G
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Comments

  1. Chan PKNovember 24, 2017 at 1:16 PM

    This is the simplest, clearest explanation of this topic I have found. Thanks!
    linux scp

    ReplyDelete
  2. digitalhtsJanuary 15, 2021 at 3:11 AM

    Really helpful down to the ground, happy to read such a useful post. I got a lot of information through it and I will surely keep it in my mind. Keep sharing. Otherwise If If any one who want to learn linux core to advance Get a free demo call on 9311002620 or visit https://htsindia.com/Courses/modular-courses/redhat-linux-administration-training-course

    ReplyDelete

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