def _print_recommended_filter(wanted_filter):
print("This is the recommended LVM filter for this host:")
print()
print(" " + lvmfilter.format_option(wanted_filter))
print()
print("""\
This filter allows LVM to access the local devices used by the
hypervisor, but not shared storage owned by Vdsm. If you add a new
device to the volume group, you will need to edit the filter manually.
""")
def main(*args):
"""
config-lvm-filter
Configure LVM filter allowing LVM to access only the local storage
needed by the hypervisor, but not shared storage owned by Vdsm.
"""
print("Analyzing host...")
mounts = lvmfilter.find_lvm_mounts()
wanted_filter = lvmfilter.build_filter(mounts)
with lvmconf.LVMConfig() as config:
current_filter = config.getlist("devices", "filter")
advice = lvmfilter.analyze(current_filter, wanted_filter)
# This is the expected condition on a correctly configured host.
if advice.action == lvmfilter.UNNEEDED:
print("LVM filter is already configured for Vdsm")
return
# We need to configure LVM filter.
print("Found these mounted logical volumes on this host:")
print()
for mnt in mounts:
print(" logical volume: ", mnt.lv)
print(" mountpoint: ", mnt.mountpoint)
print(" devices: ", ", ".join(mnt.devices))
print()
print("This is the recommended LVM filter for this host:")
print()
print(" " + lvmfilter.format_option(wanted_filter))
print()
print("""\
This filter allows LVM to access the local devices used by the
hypervisor, but not shared storage owned by Vdsm. If you add a new
device to the volume group, you will need to edit the filter manually.
""")
if current_filter:
print("This is the current LVM filter:")
print()
print(" " + lvmfilter.format_option(current_filter))
print()
if advice.action == lvmfilter.CONFIGURE:
if not confirm("Configure LVM filter? [yes,NO] "):
return
with lvmconf.LVMConfig() as config:
config.setlist("devices", "filter", advice.filter)
config.save()
print("""\
Configuration completed successfully!
Please reboot to verify the LVM configuration.
""")
elif advice.action == lvmfilter.RECOMMEND:
print("""\
WARNING: The current LVM filter does not match the recommended filter,
Vdsm cannot configure the filter automatically.
Please edit /etc/lvm/lvm.conf and set the 'filter' option in the
'devices' section to the recommended value.
It is recommend to reboot after changing LVM filter.
""")
def _print_current_filter(current_filter):
print("This is the current LVM filter:")
print()
print(" " + lvmfilter.format_option(current_filter))
print()
def test_format_option():
lvm_filter = ["a|^/dev/sda2$|", "r|.*|"]
expected = 'filter = [ "a|^/dev/sda2$|", "r|.*|" ]'
assert lvmfilter.format_option(lvm_filter) == expected
def main(*args):
"""
config-lvm-filter
Configure LVM filter allowing LVM to access only the local storage
needed by the hypervisor, but not shared storage owned by Vdsm.
"""
print("Analyzing host...")
mounts = lvmfilter.find_lvm_mounts()
wanted_filter = lvmfilter.build_filter(mounts)
with lvmconf.LVMConfig() as config:
current_filter = config.getlist("devices", "filter")
advice = lvmfilter.analyze(current_filter, wanted_filter)
# This is the expected condition on a correctly configured host.
if advice.action == lvmfilter.UNNEEDED:
print("LVM filter is already configured for Vdsm")
return
# We need to configure LVM filter.
print("Found these mounted logical volumes on this host:")
print()
for mnt in mounts:
print(" logical volume: ", mnt.lv)
print(" mountpoint: ", mnt.mountpoint)
print(" devices: ", ", ".join(mnt.devices))
print()
print("This is the recommended LVM filter for this host:")
print()
print(" " + lvmfilter.format_option(wanted_filter))
print()
print("""\
This filter allows LVM to access the local devices used by the
hypervisor, but not shared storage owned by Vdsm. If you add a new
device to the volume group, you will need to edit the filter manually.
""")
if current_filter:
print("This is the current LVM filter:")
print()
print(" " + lvmfilter.format_option(current_filter))
print()
if advice.action == lvmfilter.CONFIGURE:
if not common.confirm("Configure LVM filter? [yes,NO] "):
return
with lvmconf.LVMConfig() as config:
config.setlist("devices", "filter", advice.filter)
config.save()
print("""\
Configuration completed successfully!
Please reboot to verify the LVM configuration.
""")
elif advice.action == lvmfilter.RECOMMEND:
print("""\
WARNING: The current LVM filter does not match the recommended filter,
Vdsm cannot configure the filter automatically.
Please edit /etc/lvm/lvm.conf and set the 'filter' option in the
'devices' section to the recommended value.
It is recommend to reboot after changing LVM filter.
""")
def main(*args):
"""
config-lvm-filter
Configure LVM filter allowing LVM to access only the local storage
needed by the hypervisor, but not shared storage owned by Vdsm.
Return codes:
0 - Successful completion.
1 - Exception caught during operation.
2 - Wrong arguments.
3 - LVM filter configuration was found to be required but could not be
completed since there is already another filter configured on the
host.
4 - User has chosen not to allow LVM filter reconfiguration, although
found as required.
"""
args = parse_args(args)
print("Analyzing host...")
mounts = lvmfilter.find_lvm_mounts()
wanted_filter = lvmfilter.build_filter(mounts)
wanted_wwids = lvmfilter.find_wwids(mounts)
with lvmconf.LVMConfig() as config:
current_filter = config.getlist("devices", "filter")
current_wwids = mpathconf.read_blacklist()
advice = lvmfilter.analyze(
current_filter,
wanted_filter,
current_wwids,
wanted_wwids)
# This is the expected condition on a correctly configured host.
if advice.action == lvmfilter.UNNEEDED:
print("LVM filter is already configured for Vdsm")
return
# We need to configure LVM filter.
print("Found these mounted logical volumes on this host:")
print()
for mnt in mounts:
print(" logical volume: ", mnt.lv)
print(" mountpoint: ", mnt.mountpoint)
print(" devices: ", ", ".join(mnt.devices))
print()
print("This is the recommended LVM filter for this host:")
print()
print(" " + lvmfilter.format_option(wanted_filter))
print()
print("""\
This filter allows LVM to access the local devices used by the
hypervisor, but not shared storage owned by Vdsm. If you add a new
device to the volume group, you will need to edit the filter manually.
""")
if current_filter:
print("This is the current LVM filter:")
print()
print(" " + lvmfilter.format_option(current_filter))
print()
if advice.wwids:
print("To use the recommended filter we need to add multipath")
print("blacklist in /etc/multipath/conf.d/vdsm_blacklist.conf:")
print()
print(textwrap.indent(mpathconf.format_blacklist(advice.wwids), " "))
print()
if advice.action == lvmfilter.CONFIGURE:
if not args.assume_yes:
if not common.confirm("Configure host? [yes,NO] "):
return NEEDS_CONFIG
mpathconf.configure_blacklist(advice.wwids)
with lvmconf.LVMConfig() as config:
config.setlist("devices", "filter", advice.filter)
config.save()
print("""\
Configuration completed successfully!
Please reboot to verify the configuration.
""")
elif advice.action == lvmfilter.RECOMMEND:
print("""\
WARNING: The current LVM filter does not match the recommended filter,
Vdsm cannot configure the filter automatically.
Please edit /etc/lvm/lvm.conf and set the 'filter' option in the
'devices' section to the recommended value.
Make sure /etc/multipath/conf.d/vdsm_blacklist.conf is set with the
recommended 'blacklist' section.
It is recommended to reboot to verify the new configuration.
""")
return CANNOT_CONFIG
def test_format_option():
lvm_filter = ["a|^/dev/sda2$|", "r|.*|"]
expected = 'filter = [ "a|^/dev/sda2$|", "r|.*|" ]'
assert lvmfilter.format_option(lvm_filter) == expected
