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Today's Topics:
1. ovdb instability with Berkeley DB5/6 ([email protected])
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Message: 1
Date: Thu, 12 Sep 2019 17:56:04 -0400
From: [email protected]
To: [email protected]
Subject: ovdb instability with Berkeley DB5/6
Message-ID: <[email protected]>
Content-Type: text/plain
I have an INN environment that I updated recently. I got it stable, but
I figured I would post my experience in case there's something I can do
to help. Otherwise, maybe my experience will help anyone else having
this issue.
Env: FreeBSD 12 - amd64, INN 2.6.3
The trouble came when using 'makehistory -O -x -F' to build my ovdb. I
started with the precompiled Berkeley DB 5.3 from the FreeBSD ports
system. I couldn't get it to be stable. At first, I had mmap on. That
was very unstable. It would die and corrupt the DB. It wouldn't
recover. Then I turned on shared memory instead. Things were slightly
more stable, but it would eventually hang. When I did an 'ovdb_stat
-t', I would see there was a single transaction running. I tried lots
of other parameters randomly. I figure I have pretty good coverage of
them at this point.
My experience was about the same with BDB 6.2.
I finally switched back to BDB 4.8, which is EoL. With that and shared
memory, it was stable enough to build ovdb (about 20 hours). Everything
looks good so far.
I was upgrading from 2.5.3 and I can't remember what version of BDB I
was using way back then. It was probably another 4.x version. That was
rock solid for years. Hopefully I've gotten it back into a good state.
If this happens again, do folks have thoughts on how to debug it?
-boogles
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