VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)

Administering Hot-Relocation
How Hot-Relocation works
Chapter 9 317
Partial Disk Failure Mail Messages
If hot-relocation is enabled when a plex or disk is detached by a failure,
mail indicating the failed objects is sent to root. If a partial disk failure
occurs, the mail identifies the failed plexes. For example, if a disk
containing mirrored volumes fails, you can receive mail information as
shown in the following example:
To: root
Subject: Volume Manager failures on host teal
Failures have been detected by the VERITAS Volume Manager:
failed plexes:
home-02
src-02
See “Modifying the Behavior of Hot-Relocation” on page 335 for
information on how to send the mail to users other than root.
You can determine which disk is causing the failures in the above
example message by using the following command:
# vxstat -s -ff home-02 src-02
The -s option asks for information about individual subdisks, and the
-ff option displays the number of failed read and write operations. The
following output display is typical:
FAILED
TYP NAME READ WRITES
sd disk01-04 0 0
sd disk01-06 0 0
sd disk02-03 1 0
sd disk02-04 1 0
This example shows failures on reading from subdisks disk02-03 and
disk02-04 of disk02.
Hot-relocation automatically relocates the affected subdisks and
initiates any necessary recovery procedures. However, if relocation is not
possible or the hot-relocation feature is disabled, you must investigate
the problem and attempt to recover the plexes. Errors can be caused by
cabling failures, so check the cables connecting your disks to your
system. If there are obvious problems, correct them and recover the
plexes using the following command: