102 lines
3.1 KiB
Python
102 lines
3.1 KiB
Python
"""Qemu commands to run and handle the image"""
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import os
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import sys
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import argparse
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from subprocess import Popen, PIPE
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from gentooimgr import LOG
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import gentooimgr.config
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import gentooimgr.common
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def create_image(args, config: dict, overwrite: bool = False) -> str:
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"""Creates an image (.img) file using qemu that will be used to create the cloud image
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:Parameters:
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- config: dictionary/json configuration containing required information
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- overwrite: if True, run_image() will call this and re-create.
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:Returns:
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Full path to image file produced by qemu
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"""
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image = gentooimgr.common.get_image_name(args, config)
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name, ext = os.path.splitext(image)
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if os.path.exists(image) and not overwrite:
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return os.path.abspath(image)
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cmd = ['qemu-img', 'create', '-f', ext[1:], image, str(config.get("imgsize", "12G"))]
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proc = Popen(cmd, stderr=PIPE, stdout=PIPE)
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stdout, stderr = proc.communicate()
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return os.path.abspath(image)
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def run_image(
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args: argparse.Namespace,
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config: dict,
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mounts=[]):
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"""Handle mounts and run the live cd image
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- mount_isos: list of iso paths to mount in qemu as disks.
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"""
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iso = config.get("iso")
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prefix = args.temporary_dir
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LOG.info(f"iso from config {iso}")
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if iso is None:
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iso = gentooimgr.common.find_iso(
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os.path.join(
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os.path.abspath(os.path.dirname(__file__)),
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".."
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)
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)
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LOG.info(f"iso from cwd {iso}")
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if not iso:
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prefix = config.get('temporary_dir')
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iso = gentooimgr.common.find_iso(prefix)
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LOG.info(f"iso from {prefix} {iso}")
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assert iso, f"iso not found {iso}"
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if isinstance(iso, list):
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assert len(iso), f"iso list is empty {iso}"
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iso = iso[0]
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image = gentooimgr.common.get_image_name(args, config)
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qmounts = []
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mounts.extend(args.mounts)
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for i in mounts:
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qmounts.append("-drive")
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qmounts.append(f"file={i},media=cdrom")
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assert image, f"image is empty {image}"
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if not os.path.exists(image):
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if os.path.exists(os.path.join(prefix, image)):
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image = os.path.join(prefix, image)
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assert os.path.exists(image), f"image not found {image}"
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threads = args.threads
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cmd = [
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"qemu-system-x86_64",
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"-enable-kvm",
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"-boot", "d",
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"-m", str(config.get("memory", 2048)),
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"-smp", str(threads),
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"-drive", f"file={image},if=virtio,index=0",
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"-cdrom", iso,
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"-net", "nic,model=virtio",
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"-vga", "virtio",
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"-cpu", "kvm64",
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"-chardev", "file,id=charserial0,path=gentoo.log",
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"-device", "isa-serial,chardev=charserial0,id=serial0",
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"-chardev", "pty,id=charserial1",
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"-device", "isa-serial,chardev=charserial1,id=serial1"
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]
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# "-net", "user",
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# -net user: network backend 'user' is not compiled into this binary"
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cmd += qmounts
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LOG.info(cmd)
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proc = Popen(cmd, stderr=PIPE, stdout=PIPE)
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stdout, stderr = proc.communicate()
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if stderr:
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LOG.error(str(stderr))
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