[Ocfs2-users] Performance Problems while reading

[Egon Burgener]

Hi all

We are using a 2 node cluster with drbd 8 (primary/primary state) and
ocfs2. Reading a file on one node while it will be written on the other
node is very slow. Reading a file on node while it will be written on
the same node is fast.
In the first case the node which wants to read the file has to ask the
other to downgrade the locklevel. In my opinion this is a bottleneck, if
the files are big. Increasing clustersize did not really help.

Is there a away to speed up the read of such a file?

Is it possible to open files for reading in nolock mode (NL) instead of
(PR)?

Thanks for your response,

Egon