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livemedia-creator: Add option to create qcow2 disk images 

This adds the --qcow2 option to create qcow2 disk images in virt and
no-virt modes. You can pass extra options to qemu-img with --qcow2-arg
This commit is contained in:
Brian C. Lane 2014-03-07 18:43:14 -08:00
parent 07d5cb176d
commit b73aeb92a9
1 changed files with 54 additions and 13 deletions
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67
src/sbin/livemedia-creator
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@ -53,7 +53,7 @@ from pylorax.treebuilder import findkernels
from pylorax.sysutils import joinpaths, remove
from pylorax.imgutils import PartitionMount, mksparse, mkext4img, loop_detach
from pylorax.imgutils import get_loop_name, dm_detach, mount, umount, Mount
from pylorax.imgutils import mksquashfs
from pylorax.imgutils import mksquashfs, mkqcow2
from pylorax.executils import execWithRedirect, execWithCapture
# no-virt mode doesn't need libvirt, so make it optional
@ -242,7 +242,8 @@ class VirtualInstall( object ):
"""
def __init__( self, iso, ks_paths, disk_img, img_size=2,
kernel_args=None, memory=1024, vnc=None, arch=None,
log_check=None, virtio_host="127.0.0.1", virtio_port=6080 ):
log_check=None, virtio_host="127.0.0.1", virtio_port=6080,
qcow2=False):
"""
iso is an instance of IsoMountpoint
@ -276,7 +277,10 @@ class VirtualInstall( object ):
args.append(ks)
disk_opts = "path={0}".format(disk_img)
disk_opts += ",format=raw"
if qcow2:
disk_opts += ",format=qcow2"
else:
disk_opts += ",format=raw"
if not os.path.isfile(disk_img):
disk_opts += ",size={0}".format(img_size)
args.append("--disk")
@ -591,6 +595,19 @@ def novirt_install(opts, disk_img, disk_size, repo_url):
if rc:
raise InstallError("novirt_install failed")
if opts.qcow2:
log.info("Converting %s to qcow2", disk_img)
qcow2_args = []
for arg in opts.qcow2_args:
qcow2_args += arg.split(" ", 1)
# convert the image to qcow2 format
if "-O" not in qcow2_args:
qcow2_args.extend(["-O", "qcow2"])
qcow2_img = tempfile.mktemp(prefix="disk", suffix=".img", dir=opts.tmp)
execWithRedirect("qemu-img", ["convert"] + qcow2_args + [disk_img, qcow2_img], raise_err=True)
execWithRedirect("mv", ["-f", qcow2_img, disk_img], raise_err=True)
def virt_install(opts, install_log, disk_img, disk_size):
"""
@ -605,11 +622,21 @@ def virt_install(opts, install_log, disk_img, disk_size):
if opts.proxy:
kernel_args += " proxy="+opts.proxy
if opts.qcow2:
# virt-install can't take all the qcow2 options so create the image first
qcow2_args = []
for arg in opts.qcow2_args:
qcow2_args += arg.split(" ", 1)
mkqcow2(disk_img, disk_size*1024**3, qcow2_args)
virt = VirtualInstall(iso_mount, opts.ks, disk_img, disk_size,
kernel_args, opts.ram, opts.vnc, opts.arch,
log_check = log_monitor.server.log_check,
virtio_host = log_monitor.host,
virtio_port = log_monitor.port)
virtio_port = log_monitor.port,
qcow2=opts.qcow2)
virt.destroy()
log_monitor.shutdown()
iso_mount.umount()
@ -717,19 +744,11 @@ if __name__ == '__main__':
parser.add_argument( "--iso", type=os.path.abspath,
help="Anaconda installation .iso path to use for virt-install" )
parser.add_argument( "--disk-image", type=os.path.abspath,
help="Path to disk image to use for creating final image" )
parser.add_argument( "--fs-image", type=os.path.abspath,
help="Path to filesystem image to use for creating final image" )
parser.add_argument( "--ks", action="append", type=os.path.abspath,
help="Kickstart file defining the install." )
parser.add_argument( "--image-name", default=None,
help="Name of fs/disk image to create. Default is a random name." )
parser.add_argument( "--image-only", action="store_true",
help="Exit after creating fs/disk image." )
parser.add_argument( "--keep-image", action="store_true",
help="Keep raw disk image after .iso creation" )
parser.add_argument( "--no-virt", action="store_true",
help="Use Anaconda's image install instead of virt-install" )
parser.add_argument( "--proxy",
@ -763,6 +782,20 @@ if __name__ == '__main__':
parser.add_argument( "--nomacboot", action="store_false",
dest="domacboot")
image_group = parser.add_argument_group("disk/fs image arguments")
image_group.add_argument( "--disk-image", type=os.path.abspath,
help="Path to disk image to use for creating final image" )
image_group.add_argument( "--keep-image", action="store_true",
help="Keep raw disk image after .iso creation" )
image_group.add_argument( "--fs-image", type=os.path.abspath,
help="Path to filesystem image to use for creating final image" )
image_group.add_argument( "--image-name", default=None,
help="Name of fs/disk image to create. Default is a random name." )
image_group.add_argument("--qcow2", action="store_true",
help="create qcow2 image instead of raw sparse image")
image_group.add_argument("--qcow2-arg", action="append", dest="qcow2_args", default=[],
help="Arguments to pass to qemu-img. Pass once for each argument")
# Group of arguments for appliance creation
app_group = parser.add_argument_group("appliance arguments")
app_group.add_argument( "--app-name", default=None,
@ -874,6 +907,14 @@ if __name__ == '__main__':
log.error("The disk image to be created should not exist.")
sys.exit(1)
if opts.qcow2 and not os.path.exists("/usr/bin/qemu-img"):
log.error("qcow2 requires the qemu-img utility to be installed.")
sys.exit(1)
if opts.qcow2 and opts.make_iso:
log.error("qcow2 cannot be used to make a bootable iso.")
sys.exit(1)
if opts.app_file:
opts.app_file = joinpaths(opts.tmp, opts.app_file)