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# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
from sos.plugins import Plugin, RedHatPlugin, DebianPlugin, UbuntuPlugin
class Lvm2(Plugin, RedHatPlugin, DebianPlugin, UbuntuPlugin):
"""LVM2 volume manager
"""
plugin_name = 'lvm2'
profiles = ('storage',)
option_list = [("lvmdump", 'collect an lvmdump tarball', 'fast', False),
("lvmdump-am", 'attempt to collect an lvmdump with '
'advanced options and raw metadata collection', 'slow',
False)]
def do_lvmdump(self, metadata=False):
"""Collects an lvmdump in standard format with optional metadata
archives for each physical volume present.
"""
lvmdump_cmd = "lvmdump %s -d '%s'"
lvmdump_opts = ""
if metadata:
lvmdump_opts = "-a -m"
cmd = lvmdump_cmd % (lvmdump_opts,
self.get_cmd_output_path(name="lvmdump",
make=False))
self.add_cmd_output(cmd)
def setup(self):
# use locking_type 0 (no locks) when running LVM2 commands,
# from lvm.conf:
# Turn locking off by setting to 0 (dangerous: risks metadata
# corruption if LVM2 commands get run concurrently).
# None of the commands issued by sos ever modify metadata and this
# avoids the possibility of hanging lvm commands when another process
# or node holds a conflicting lock.
lvm_opts = '--config="global{locking_type=0}"'
self.add_cmd_output(
"vgdisplay -vv %s" % lvm_opts,
root_symlink="vgdisplay"
)
pvs_cols = 'pv_mda_free,pv_mda_size,pv_mda_count,pv_mda_used_count'
pvs_cols = pvs_cols + ',' + 'pe_start'
vgs_cols = 'vg_mda_count,vg_mda_free,vg_mda_size,vg_mda_used_count'
vgs_cols = vgs_cols + ',' + 'vg_tags'
lvs_cols = 'lv_tags,devices'
self.add_cmd_output([
"vgscan -vvv %s" % lvm_opts,
"pvscan -v %s" % lvm_opts,
"pvs -a -v -o +%s %s" % (pvs_cols, lvm_opts),
"vgs -v -o +%s %s" % (vgs_cols, lvm_opts),
"lvs -a -o +%s %s" % (lvs_cols, lvm_opts)
])
self.add_copy_spec("/etc/lvm")
if self.get_option('lvmdump'):
self.do_lvmdump()
elif self.get_option('lvmdump-am'):
self.do_lvmdump(metadata=True)
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