Using High Availability Monitors (June 2007)

Monitoring Disk Resources
HA Disk Monitor Reference
Chapter 236
When you first configure mirroring in LVM, it lists 0 mirrors, meaning
you have only the original copy of the data. Likewise, 2 mirrors mean you
have one original plus 2 mirrored copies.
When configuring requests from the HP SMH interface, use a wildcard
(*) in place of lvName to request status for all logical volumes in a volume
group.
If you split off mirrors from your mirrored configuration, you will see the
number of copies reduced by 1 when the split mirror is created.
Table 2-5 Interpreting Logical Volume Copies
Resource Name: vg/vgName/lv/copies/lvName
Condition Interpretation
0 No additional copies, (only the original copy), either
physical parts of the disk array have problems, the lv is
inactive, or a physical extent is stale or unavailable.
1 One complete copy of data is available. If the data is not
mirrored, then all physical extents are fine. If the data is
mirrored, all other copies have problems.
2 Two complete copies of data are available. If the data is
two-way mirrored, then all physical disks are up and data
is available. If the data is 3-way mirrored, at least one
logical extent has a missing or stale physical extent.
3 All copies of a 3-way mirror are available.