[PATCH 5/6] Add an example of creating lvs using growable requests.

Anne Mulhern amulhern at redhat.com
Fri Dec 13 17:06:37 UTC 2013





----- Original Message -----
> From: "David Lehman" <dlehman at redhat.com>
> To: anaconda-patches at lists.fedorahosted.org
> Sent: Friday, December 13, 2013 10:55:33 AM
> Subject: [PATCH 5/6] Add an example of creating lvs using growable requests.
> 
> ---
>  examples/lvm.py | 64
>  +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 64 insertions(+)
>  create mode 100644 examples/lvm.py
> 
> diff --git a/examples/lvm.py b/examples/lvm.py
> new file mode 100644
> index 0000000..3d9f451
> --- /dev/null
> +++ b/examples/lvm.py
> @@ -0,0 +1,64 @@
> +import logging
> +import sys
> +import os
> +
> +from common import set_up_logging
> +from common import create_sparse_file
> +from common import tear_down_disk_images
> +from common import print_devices
> +
> +# doing this before importing blivet gets the logging from format class
> +# registrations and other stuff triggered by the import
> +set_up_logging()
> +blivet_log = logging.getLogger("blivet")
> +blivet_log.info(sys.argv[0])
> +
> +import blivet
> +from blivet.size import Size
> +
> +b = blivet.Blivet()   # create an instance of Blivet (don't add system
> devices)
> +
> +# create two disk image files on which to create new devices
> +disk1_file = create_sparse_file(b, "disk1", Size(spec="100GB"))
> +b.config.diskImages["disk1"] = disk1_file
> +
> +b.reset()
> +
> +try:
> +    disk1 = b.devicetree.getDeviceByName("disk1")
> +
> +    b.initializeDisk(disk1)
> +
> +    pv = b.newPartition(size=Size(spec="50GB"), fmt_type="lvmpv")
> +    b.createDevice(pv)
> +
> +    # allocate the partitions (decide where and on which disks they'll
> reside)
> +    blivet.partitioning.doPartitioning(b)
> +
> +    vg = b.newVG(parents=[pv])
> +    b.createDevice(vg)
> +
> +    # new lv with base size 5GB and unbounded growth and an ext4 filesystem
> +    dev = b.newLV(fmt_type="ext4", size=Size(spec="5GB"), grow=True,
> +                  parents=[vg], name="unbounded")
> +    b.createDevice(dev)
> +
> +    # new lv with base size 5GB and growth up to 15GB and an ext4 filesystem
> +    dev = b.newLV(fmt_type="ext4", size=Size(spec="5GB"), grow=True,
> +                  maxsize=Size(spec="15GB"), parents=[vg], name="bounded")
> +    b.createDevice(dev)
> +
> +    # new lv with a fixed size of 2GB formatted as swap space
> +    dev = b.newLV(fmt_type="swap", size=Size(spec="2GB"), parents=[vg])
> +    b.createDevice(dev)
> +
> +    # allocate the growable lvs
> +    blivet.partitioning.growLVM(b)
> +    print_devices(b)
> +
> +    # write the new partitions to disk and format them as specified
> +    b.doIt()
> +    print_devices(b)
> +finally:
> +    tear_down_disk_images(b)
> +    os.unlink(disk1_file)
> --
> 1.8.1.4

Ack.

- mulhern

> 
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