Please test new "reusing existing partitions" feature of server installer

Michael Hudson-Doyle michael.hudson at
Tue Jul 16 01:57:46 UTC 2019

Hi all,

Subiquity, the new server installer, gained a new feature recently: the
ability to reuse partitions (and RAIDs and LVMs too) that already exist on
the device you are installing to. If this sounds like a feature you are
interested in, please grab yourself an ISO from and test it out.

If you don't want to test this on a real system containing real data yet
(understandable), a simple test would be to install to a disk image or two
in a VM, and then install again to the same images and use parts of the
first installation when you perform the second.

$ wget
$ qemu-img create -f raw disk1.img 10G
$ qemu-img create -f raw disk2.img 10G
$ kvm -m 1024 -boot d -cdrom eoan-live-server-amd64.iso -hda disk1.img -hdb

Now run the install, doing some interesting things with partitions and
RAIDs and VGs (don't just accept the defaults) and then run it again:

$ kvm -m 1024 -boot d -cdrom eoan-live-server-amd64.iso -hda disk1.img -hdb

You should be able to reuse the partitions/RAIDs/LVs you created before
when installing the second time.

Please reply here or file bugs at with
any feedback you have!

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