Hi,

I'm creating a RHEL7 VM that I will upload to AWS and convert into an AMI from which I will create instances.

I've found lots of good info online to help with 'anonymizing' the VM, but I am having problems with mapper devices.

If I cat /etc/fstab I see lines like these:

I don't want 'myhostname' to appear there. If I look at the output of dmsetup I see this:

I can use 'dmsetup rename' to rename those devices, but not in a persistent way - it always reverts after a reboot.

Where is the original hostname stored that it is coming back in this way? Does this take me into the realm of udev? Is there a simple way to remove this reference to the hostname from devices (I'd be completely happy with 'rhel-swap' and 'rhel-root')?

Thanks in advance for any help,
Rotty

PS, the VM is on Hyper-V.

Hi,

I've found a solution to this (or a workaround anyway).

It occurred to me that a better solution would be to install the OS on the VM in such a way that it doesn't put the hostname in device names. While researching that I realised i had made a mistake with my initial build and was using 'autopart' to create the initial LVM config. When I swapped to use 'volgroup' and 'logvol' commands in my build script I was able to use generic device names. I don't know if it is possible to influence the names of devices when using 'autopart'.

While I was stumbling across the above (superior) solution I had come to the realization that my initial question was more specifically 'how can I rename the rootvg?', as the rest just falls into place when that is done. I hadn't found a full solution to that, but in the interests of completeness it would be something similar too this:

There may be a requirement to use mkinitrd too, but since I discovered my preferred workaround I needn't investigate further.

Thanks,
Rotty