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BigChief
Asked: 2011-09-01 06:03:13 +0800 CST

qcow2: Safe to use guestfish zerofree option on ext4 on top of LVM?

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Is it safe to use guestfish's zerofree option on ext4 which is inside an LVM volume? If not, what is the best approach - rebooting (inside the VM) into recovery mode and using the regular zerofree utility? I am having trouble finding any references online to using these two tools with LVMs.

lvm kvm-virtualization ext4 qcow2

1 Answers

  1. Best Answer

    It should "just work".

    There is more detail about the problem here: https://www.redhat.com/archives/libguestfs/2011-September/thread.html#00007

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