[Ocfs-users] Re: Clarification on 1.0.14-1

[Bruce Holzrichter]

> BTW, as this bug was known to cause on-disk corruptions, I am
> not sure how you have linked this to your momentary freeze-ups.

Thanks, this sounds like it wouldn't be our issue then, as we are using
OCFS for the DB and archive to an EXT2 partition.

> 1. How many logfile groups do you have?

4 logfile groups on each node - 1 logfile per group
Node 1 uses thread 1, node 2 uses thread 2 ...

> 2. Logfile sizes?

Each logfile is 1 gig.
Logfiles are on ocfs raid 0,1 and are archived to ext2 raid 5

> 3. Kernel version?

Right now, Kernel 2.4.9-e.49enterprise

> 4. Memory?

4 Node RAC, 4 Zeon CPU Dell 6650 16GB each.

> 5. How did you determine the freezeup was during archiving?

This is the only common thread I have found so far, when one node
archives, there is significant response slowdown from the DB. If more
than one node is archiving at the same time, there is a tremendous
slowdown, and our webservers back up traffic to the point our site
sometimes fails.

I am not the DBA, but the Systems Administrator.  We had been working
with Oracle/Red Hat, and done numerous VM tuning changes, OCFS upgrades,
kernel upgrades, etc along the way.  

I have been looking at load issues, VM tuning, hardware, etc. trying to
isolate where the issue lies.   These will even happen during light load
on the systems when they archive as well, it appears.  

Thanks for your thoughts on this.
Bruce Holzrichter