CachyOS VM #2241

Name of the Script

CachyOS-VM

Script Type

VM (Virtual Machine)

Does this script support arm64?

arm64 not supported

📋 Script Details

vm/cachyos-vm.sh — creates a CachyOS VM. CachyOS is a performance-focused Arch derivative with custom kernels, BORE and sched-ext schedulers, and packages built for x86-64-v3/v4. Installation is completed in the graphical Calamares installer.

Rebuilt on the new core (pve/vm-core.func): 589 → 196 lines. Everything the engine already provides — the settings wizard, the storage picker, the header, the colour and icon block — was removed rather than duplicated. Two helpers were added to vm-core in the process (vm_echo_default_settings, vm_start_script, core#12/#13), so the other VM scripts benefit too.

This one has actually been run, and three faults came out of it. All are fixed:

1. unable to parse lvm volume name 40G — qm create -scsi0 <storage>:<size> wants a bare integer in GiB, not 40G. Now ${STORAGE}:${DISK_SIZE%G}.
2. A truncated ISO was accepted. A bad SourceForge mirror serves an HTML notice with status 200, so curl exits 0 and the VM boots to nothing. There is now a size floor (MIN_ISO_BYTES, 500 MB) that decides whether the file is really an ISO, applied to the cached copy as well as to fresh downloads.
3. A stray 101 and _cs_clear: command not found — both were engine faults, not script faults, fixed in core#13. load_functions was running six functions that no longer belonged to it, so loading the engine printed a bare VM ID and tore down the temp dir before there was one.

A fourth, cosmetic one is fixed too: Wide character in print at /usr/share/perl5/PVE/API2/Qemu.pm line 2259 on every VM creation, because set_description put raw emoji into the VM description. The LXC path had percent-encoded these since it was written; the VM path never caught up.

Defaults: 4 cores, 8 GB RAM, 40 GB disk, q35, host CPU.

What still needs testing

• Storage types other than LVM-thin — the disk-size fix was found on local-lvm only
• The version discovery against SourceForge when a new CachyOS release lands
• Whether the installer completes and the VM boots from disk after the ISO is detached