Hi Christoph, >> We have an XFS instance mounted as "sync" >> (rw,sync,noatime,wsync,attr2,discard,inode64,prjquota 0 0). This instance is >> exposed via nfsd. Size is about 50TB. > > Don't use the sync option ever. In fact we probably should remove it. We are using the sync mount option, because the XFS instances that we have are exposed via nfsd. Without the "sync" mount option, data from NFS write command would end up sitting in page cache, and the nfs client would not know when it has been finally persisted on disk. Is the any other way that you can recommend to provide data integrity guarantee for nfs clients? Even if it requires some development, like placing the data in a short-term persistent space, this is something we will look at. Thanks, Alex. -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
