NFS cache-cleaning command?

Question

I have a trouble with NFS client-side attribute caching. I\'m using some servers, one is an NFS server and the others are NFS client servers.

All servers are Debian(lenn

Answer 1

Depending on what you mean by "false-caching errors", running sync may get you what you need. This will flush all filesystem buffers.

If needed, you can also clear out the VM caches in the kernel using /proc/sys/vm/drop_caches.

# To free pagecache
echo 1 > /proc/sys/vm/drop_caches

# To free dentries and inodes
echo 2 > /proc/sys/vm/drop_caches

# To free pagecache, dentries and inodes
echo 3 > /proc/sys/vm/drop_caches