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livemedia-creator: Add support for making ami images 

AMI images are un-partitioned filesystem images with a grub.conf that
is read by the pv-grub bootloader used by EC2. Most of the actual work
making the AMI is done in the kickstart. This just creates the image
file.
This commit is contained in:
Brian C. Lane 2012-02-28 13:57:17 -08:00
parent b84fba40a5
commit 69c14b8f84
1 changed files with 30 additions and 11 deletions
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41
src/sbin/livemedia-creator
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@ -46,7 +46,7 @@ from pykickstart.version import makeVersion
from pylorax.base import DataHolder
from pylorax.treebuilder import TreeBuilder, RuntimeBuilder, udev_escape
from pylorax.sysutils import joinpaths, remove, linktree
from pylorax.imgutils import PartitionMount, mksparse
from pylorax.imgutils import PartitionMount, mksparse, mkext4img
from pylorax.executils import execWithRedirect, execWithCapture
@ -406,6 +406,23 @@ def get_kernels( boot_dir ):
return [f[8:] for f in files if f.startswith("vmlinuz-")]
def make_ami( disk_img, ami_img="ami-root.img", ami_label="AMI" ):
"""
Copy the / partition to an un-partitioned disk image
ami_img is the filename to write, defaults to ami-root.img
ami_label is the FS label to apply to the image
All other AMI setup is handled by the kickstart's %post
"""
with PartitionMount( disk_img ) as img_mount:
work_dir = tempfile.mkdtemp()
log.info("working dir is {0}".format(work_dir))
log.info("creating {0}".format(ami_img))
mkext4img(img_mount.mount_dir, joinpaths(work_dir, ami_img), label=ami_label)
return work_dir
def make_livecd( disk_img, squashfs_args="", templatedir=None,
title="Linux", project="Linux", releasever=16 ):
"""
@ -423,6 +440,9 @@ def make_livecd( disk_img, squashfs_args="", templatedir=None,
"""
with PartitionMount( disk_img ) as img_mount:
if not img_mount or not img_mount.mount_dir:
return None
kernel_list = get_kernels( joinpaths( img_mount.mount_dir, "boot" ) )
log.debug( "kernel_list = {0}".format(kernel_list) )
if kernel_list:
@ -592,7 +612,7 @@ if __name__ == '__main__':
log.error("You need to run this as root")
sys.exit( 1 )
if not os.path.exists( opts.lorax_templates ):
if opts.make_iso and not os.path.exists( opts.lorax_templates ):
log.error( "The lorax templates directory ({0}) doesn't"
" exist.".format( opts.lorax_templates ) )
sys.exit( 1 )
@ -614,10 +634,6 @@ if __name__ == '__main__':
log.error( "--make-appliance is not yet implemented." )
sys.exit( 1 )
if opts.make_ami:
log.error( "--make-ami is not yet implemented." )
sys.exit( 1 )
if not opts.no_virt and not opts.iso and not opts.disk_image:
log.error( "virt-install needs an install iso." )
sys.exit( 1 )
@ -701,13 +717,16 @@ if __name__ == '__main__':
result_dir = make_livecd( opts.disk_image or disk_img, opts.squashfs_args,
opts.lorax_templates,
opts.title, opts.project, opts.releasever )
elif opts.make_ami and not opts.image_only:
result_dir = make_ami(opts.disk_image or disk_img)
if not opts.keep_image and not opts.disk_image:
os.unlink( disk_img )
# cleanup the mess
if disk_img and not opts.keep_image and not opts.disk_image:
os.unlink( disk_img )
if opts.result_dir:
shutil.copytree( result_dir, opts.result_dir )
shutil.rmtree( result_dir )
if opts.result_dir and result_dir:
shutil.copytree( result_dir, opts.result_dir )
shutil.rmtree( result_dir )
log.info("SUMMARY")
log.info("-------")