Try these: 1) Note that 2.6 kernel defaults NFS export option to "sync". So unless you have a strong need, explicitly set NFS export to "async" in your export file (/etc/exports in Red Hat systems) and do *not* mount NFS shares with "sync" option. 2) Upon large NFS append (i.e. "write" that will increase file size), using bigger block size (e.g. when using dd command) and/or bigger application buffer AND increasing NFS wsize and rsize (mount option) to its maximum, *if* you have to use "sync" in as either export or mount option. The problem here could be GFS sync due to its cluster filesystem nature and its file sync design. So try to avoid it if possible. Let us know how it goes. -- Wendy -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
