EMS Manual

Configuring EMS
EMS Manual—426909-005
12-26
Primary Collector Logging After a System Load
Determining Primary Collector Log-File Attributes
When the primary collector starts logging after a system load and has determined
where the initial log file is to be located, it sets its file configuration attributes as:

If a valid ZZEVCONF file exists on the log subvolume, all values are taken from the
ZEMS-MAP-COL-STATUS token, except DISCACCESSID, which is not stored in
the COL-STATUS token and always defaults to super ID after a system load.

If there is no valid ZZEVCONF file on the log subvolume, but there is a valid
$SYSTEM.SYSTEM.ZZEVCONF, all values (except DISCACCESSID) are taken
from that file instead.

If there is no valid ZZEVCONF file in either location, the collector creates the first
log file with these attribute settings:
PRIMARYEXTENTS = 20
SECONDARYEXTENTS = 100
WRITETHRUCACHE = FALSE
EOFREFRESH = TRUE
Figure 12-4. Determining Log-File Names After a System Load
Does file
$SYSTEM.ZLOGnn.ZZEVCONF
exist?
Assume previous
logging took place. Get
previous log file name
(for example, ZZEVnnnn).
Assume no previous
logging took place. Create
$SYSTEM.ZLOGnn.ZZEV0000
and start logging in this file.
NoYes
Is first record
a file switch
event message?
Yes No
Start logging
in this file.
Increment log file
name (ZZEVnnnn)
by 1 and start logging
in this file.
Yes No
Is this name the
same as the one in
$SYSTEM.SYSTEM.ZZEVCONF?
Cold Load
VST009.vsd