Hello All An update on this.
Earlier in this thread, Jakub had suggested remounting the XFS filesystems with the mount option allocsize=1m. I've done that now, on a few systems that have been experiencing this error multiple times a day, and it does seem to stop the errors from occurring. It has only been a few days, but it does look encouraging as a workaround. >From the xfs man page, it seems that manually setting allocsize turns off the dynamic preallocation size heuristics that are normally used by XFS. The other piece of info is that we have raised a support ticket with Redhat. I'm not directly in contact with them (it's another team that handles that) but I will let you know of any developments. Cheers Mike