[mrtg] MRTG Losing Data

[Ed Lafferty]

I have been running MRTG 2.9.17 on a Unix system for the past few months.
Today I saw something very strange. I have lost almost all of my historic
data for all of my monitored Windows servers and Cisco devices! My current
graphs are still be being updated, but if I look at any of of the back data
for weeks, months or year, the data is gone. MRTG has not stopped running
nor does the monitoring server appear to be having any kind of trouble.  
Has anyone else experienced this? Does anyone have any ideas as to what may
have happened?

In a manner of speaking, I was able to catch the data loss in the act.  I
was monitoring CPU utilization on a server earlier today. The graph was
growing the proper way all day. On one of the page refreshes though, the
graph did not show, only the missing image icon. On the next refresh of the
page, the graph had lost all of the days information. It was stating 
over from scratch. Ditto when delving into the historic info for that OID on
that server. It was as if MRTG has just been turned on for the first time.

Thanks in advance for any help,

Ed Lafferty
Mgr, Network Operations
Bolt Inc.

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