checks/aix_lvm

   1 #!/usr/bin/python
   2 # -*- encoding: utf-8; py-indent-offset: 4 -*-
   3 # +------------------------------------------------------------------+
   4 # |             ____ _               _        __  __ _  __           |
   5 # |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
   6 # |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
   7 # |           | |___| | | |  __/ (__|   <    | |  | | . \            |
   8 # |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
   9 # |                                                                  |
  10 # | Copyright Mathias Kettner 2014             mk@mathias-kettner.de |
  11 # +------------------------------------------------------------------+
  12 #
  13 # This file is part of Check_MK.
  14 # The official homepage is at http://mathias-kettner.de/check_mk.
  15 #
  16 # check_mk is free software;  you can redistribute it and/or modify it
  17 # under the  terms of the  GNU General Public License  as published by
  18 # the Free Software Foundation in version 2.  check_mk is  distributed
  19 # in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
  20 # out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
  21 # PARTICULAR PURPOSE. See the  GNU General Public License for more de-
  22 # tails. You should have  received  a copy of the  GNU  General Public
  23 # License along with GNU Make; see the file  COPYING.  If  not,  write
  24 # to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
  25 # Boston, MA 02110-1301 USA.
  26
  27 # Agent output and things to know:
  28
  29 # hd5                 boot       1       2       2    closed/syncd  N/A
  30 # hd6                 paging     65      130     2    open/syncd    N/A
  31 # hd8                 jfs2log    1       2       2    open/syncd    N/A
  32 # hd4                 jfs2       1       2       2    open/syncd    /
  33 # hd2                 jfs2       5       10      2    open/syncd    /usr
  34 # hd9var              jfs2       3       6       2    open/syncd    /var
  35 # hd3                 jfs2       2       4       2    open/syncd    /tmp
  36 # hd1                 jfs2       1       2       2    open/syncd    /home
  37 # hd10opt             jfs2       3       6       2    open/syncd    /opt
  38 # hd11admin           jfs2       1       2       2    open/syncd    /admin
  39 # lg_dumplv           sysdump    6       6       1    open/syncd    N/A
  40 # livedump            jfs2       1       2       2    open/syncd    /var/adm/ras/livedump
  41 # lvwork              jfs2       1       2       2    open/syncd    /work
  42 # lvbackup            jfs2       200     200     1    open/syncd    /backup
  43 # fwdump              jfs2       5       5       1    open/syncd    /var/adm/ras/platform
  44 # lvoracle            jfs2       30      30      1    open/syncd    /oracle
  45
  46 # hd5 which contains the boot kernel is normally always closed (but it doesn't
  47 # matter IF it's closed.
  48
  49 # row3: 1 means it alloceted one lvm logical extent (called partition on AIX), so
  50 # it's likely 256MB in size.
  51 # row4: 2 means it uses two physical extents. So if it uses two physical for
  52 # one logical ... yeah, a mirror
  53
  54 # row5: 2 means that the volume uses two physical volumes to store those
  55 # extents. So the mirror isn't on the same disk if it dies.
  56
  57 # row6: here open/syncd is OK for every active volume
  58
  59 #lvmconf = {
  60 #    rootvg : {
  61 #         hd5 : ("boot", 1, 2, 2, "closed/syncd", None)
  62 #         hd4 : ("/",    1, 2, 2, "open/syncd",   "/")
  63 #    }
  64 #}
  65
  66
  67 def parse_aix_lvm(info):
  68     lvmconf = {}
  69     for line in info:
  70         if len(line) == 1:
  71             vgname = line[0][:-1]
  72             lvmconf.update({vgname: {}})
  73         # Some versions send a title line "LV NAME  ..."
  74         elif line[0] == "LV" and line[1] == "NAME":
  75             continue
  76         else:
  77             lv, lvtype, num_lp, num_pp, num_pv, act_state, mountpoint = line
  78             # split lv state into two relevant values
  79             activation, mirror = act_state.split("/")
  80             if mountpoint == "N/A":
  81                 mountpoint = None
  82             lvmconf[vgname].update({
  83                 lv: (lvtype, int(num_lp), int(num_pp), int(num_pv), activation, mirror, mountpoint)
  84             })
  85     return lvmconf
  86
  87
  88 def inventory_aix_lvm(info):
  89     inventory = []
  90     for vg, volumes in parse_aix_lvm(info).iteritems():
  91         for lv in volumes:
  92             #inventory.append(("%s/%s" % (vg, lv), ('%s' % volumes[lv][4],)))
  93             inventory.append(("%s/%s" % (vg, lv), None))
  94     return inventory
  95
  96
  97 def check_aix_lvm(item, _no_params, info):
  98
  99     # Get ready to find our item and settings.
 100     #target_activation = params
 101     target_vg, target_lv = item.split("/")
 102
 103     # Get structured LVM info
 104     lvmconf = parse_aix_lvm(info)
 105
 106     if target_vg in lvmconf and target_lv in lvmconf[target_vg]:
 107         msgtxt = []
 108         state = 0
 109
 110         lvtype, num_lp, num_pp, num_pv, activation, mirror, _mountpoint = lvmconf[target_vg][
 111             target_lv]
 112
 113         # Test if the volume is mirrored.
 114         # Yes? Test for an even distribution of PP's over volumes.
 115         # This is cannot detect crossover misaligns and other bad practices.
 116         if num_pp / num_lp > 1:
 117             if not num_pp / num_pv == num_lp:
 118                 msgtxt.append("LV Mirrors are misaligned between physical volumes(!)")
 119                 state = max(state, 1)
 120
 121         # If it's not the boot volume I suspect it should be open.
 122         # This may need to be changed for some scenarios
 123         if lvtype != "boot":
 124             if activation != "open":  # and activation != target_activation:
 125                 msgtxt.append("LV is not opened(!)")
 126                 state = max(state, 1)
 127
 128         # Detect any, not just mirrored, volumes, that have stale PPs.
 129         # This means either a disk write failure causing a mirror to go stale
 130         # or some kind of split mirror backup.
 131         if mirror != "syncd":
 132
 133             msgtxt.append("LV is not in sync state(!!)")
 134             state = max(state, 2)
 135
 136         if state == 0:
 137             msgtxt = "LV is open/syncd"
 138         else:
 139             msgtxt = ", ".join(msgtxt)
 140         return (state, msgtxt)
 141
 142     return (3, "no such volume found")
 143
 144
 145 check_info['aix_lvm'] = {
 146     "check_function": check_aix_lvm,
 147     "inventory_function": inventory_aix_lvm,
 148     "service_description": "Logical Volume %s",
 149     # "group"              : "",
 150     # "default_levels_variable" : "services_default_levels",
 151     # first check we have a vendor mib from W&T, then check for the model in their MIB.
 152 }