Files from same NFS server show different md5sum on different NFS clients.

Issue

• Need some advisory tips and deep dive documentation about kernel memory management – file system cache.
• Request is related to the recent problems that we have had with cached files.
• When the same file was read from different nfs client we have a different results.
• After some investigation we noticed that all problem files are in system file cache. But they was in cache all time.
• These files are archive files from a NFS share , and one problem is that we have some another trouble with recall functionality and some servers have read “wrong” data.