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ceph-volume: adds the --destroy flag to ceph-volume lvm zap

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If you use the --destroy flag and are zapping a raw device
or parition then zap will destroy any vgs or lvs it finds on that
device.

Signed-off-by: Andrew Schoen <aschoen@redhat.com>
This commit is contained in:
Andrew Schoen 2018-01-17 15:11:19 -06:00
parent 50a6a543a9
commit aea326b772
1 changed files with 36 additions and 4 deletions
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40
src/ceph-volume/ceph_volume/devices/lvm/zap.py
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@ -59,6 +59,17 @@ class Zap(object):
logger.info("Zapping: %s", path)
terminal.write("Zapping: %s" % path)
if args.destroy and not lv:
# check if there was a pv created with the
# name of device
pv = api.PVolumes().get(pv_name=device)
if pv:
logger.info("Found a physical volume created from %s, will destroy all it's vgs and lvs", device)
vg_name = pv.vg_name
logger.info("Destroying volume group %s because --destroy was given", vg_name)
terminal.write("Destroying volume group %s because --destroy was given" % vg_name)
api.remove_vg(vg_name)
wipefs(path)
zap_data(path)
@ -70,9 +81,10 @@ class Zap(object):
def main(self):
sub_command_help = dedent("""
Zaps the given logical volume or partition. If given a path to a logical
volume it must be in the format of vg/lv. Any filesystems present
on the given lv or partition will be removed and all data will be purged.
Zaps the given logical volume, raw device or partition for reuse by ceph-volume.
If given a path to a logical volume it must be in the format of vg/lv. Any
filesystems present on the given device/lv/partition will be removed and
all data will be purged.
However, the lv or partition will be kept intact.
@ -86,6 +98,20 @@ class Zap(object):
ceph-volume lvm zap /dev/sdc1
If the --destroy flag is given and you are zapping a raw device or partition
then all vgs and lvs that exist on that raw device or parition will be destroyed.
This is especially useful if you've give that raw device or partition to the
ceph-volume lvm create or ceph-volume lvm prepare commands previously and now want to
reuse that device.
For example:
ceph-volume lvm zap /dev/sda --destroy
If the --destroy flag is given and you are zapping an lv then the lv is still
kept intact for reuse.
""")
parser = argparse.ArgumentParser(
prog='ceph-volume lvm zap',
@ -97,7 +123,13 @@ class Zap(object):
'device',
metavar='DEVICE',
nargs='?',
help='Path to an lv (as vg/lv) or to a partition like /dev/sda1'
help='Path to an lv (as vg/lv), partition (as /dev/sda1) or device (as /dev/sda)'
)
parser.add_argument(
'--destroy',
action='store_true',
default=False,
help='Destroy all volume groups and logical volumes if you are zapping a raw device or partition',
)
if len(self.argv) == 0:
print(sub_command_help)