[monit] Monitoring LVM

[zachlac]

I have monit monitoring /dev/sdb1, /dev/sdb2, and /dev/sda1.  However,
/dev/sda2 is a Linux LVM, and when I try to monitor it I get a "Data access
error".  My output for fdisk is as follows:
----------------------------------------------------------------------------------------------
isk /dev/sda: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391   83  Linux
/dev/sda2              14       24321   195254010   8e  Linux LVM

Disk /dev/sdb: 200.0 GB, 200049647616 bytes
255 heads, 63 sectors/track, 24321 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1       12160    97675168+  83  Linux
/dev/sdb2           12161       24321    97683232+  83  Linux
--------------------------------------------------------------------------------------------

My monitrc contains the following important lines:
---------------------------------------------------------------------------------------------
  check filesystem boot_sda1 with path /dev/sda1
    start program  = "/bin/mount /data"
    stop program  = "/bin/umount /data"
    if failed permission 640 then unmonitor
    if failed uid root then unmonitor
    if failed gid disk then unmonitor
    if space usage > 80% for 5 times within 15 cycles then alert
    if space usage > 99% then stop
#    if inode usage > 30000 then alert
#    if inode usage > 250000 then alert
    if inode usage > 80% then alert
    if inode usage > 99% then stop
    group server

  check filesystem datafs_sda2 with path /dev/sda2
    start program  = "/bin/mount /data"
    stop program  = "/bin/umount /data"
    if failed permission 640 then unmonitor
    if failed uid root then unmonitor
    if failed gid disk then unmonitor
    if space usage > 80% for 5 times within 15 cycles then alert
    if space usage > 99% then stop
#    if inode usage > 30000 then alert
#    if inode usage > 250000 then alert
    if inode usage > 80% then alert
    if inode usage > 99% then stop
    group server
---------------------------------------------------------------------------------------------

Why can't I monitor the LVM?

Thank you.
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