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I have a Debian 10 system which uses an encrypted LVM2.

Currently I have a 10G /var partition that is not big enough for my daily usage of docker, so I decided to resize it.

To my surprise, I have no tool to manage LVM installed, nor available in my repositories! Plus the documentation in Debian wiki is outdated.

root@almanzora:~# pvchange
bash: pvchange: command not found
root@almanzora:~# pvck
bash: pvck: command not found
root@almanzora:~# pvcreate
bash: pvcreate: command not found
root@almanzora:~# pvdisplay
bash: pvdisplay: command not found
root@almanzora:~# pvmove
bash: pvmove: command not found
root@almanzora:~# pvs
bash: pvs: command not found
root@almanzora:~# pvscan
bash: pvscan: command not found
root@almanzora:~#

How can I handle now my LVM without the tools and not "breaking Debian" by installing old packages from previous versions?

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  • 1
    Debian 10 certainly delivers LVM2 packages. I am not sure why they would be missing from your repositories, maybe show the output of apt update or let us know if you are using an architecture that may not have LVM2 packages built for it. – GracefulRestart Oct 25 at 8:14
  • When the system is already using LVM, the idea of LVM tools not being installed does not make sense unless the tools have been actively uninstalled since the last boot. So the reason almost certainly had to be something else. And that su change has surprised quite a few Debian users... including myself :) (Comment replaced by a real answer). – telcoM Oct 25 at 11:02
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Note that in older versions of Debian the su command came from the old shadow source package, but Debian 10's su comes from util-linux source code and has different semantics.

Depending on how exactly you're switching to root, you might now be getting /sbin and /usr/sbin omitted from your PATH, which would explain the shell not finding the LVM tools.

In this particular case, switching to root with su - (instead of su) adds the appropriate directories to the PATH.

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