FS cache is not used:
$ cat /proc/fs/nfsfs/volumes NV SERVER PORT DEV FSID FSC v4 c0a84190 801 0:258 7e59ad2c8fec4a2b:93201b279cd3026b no
Install FS cache:
sudo apt install cachefilesd -y
Enable it:
# Defaults for cachefilesd initscript # sourced by /etc/init.d/cachefilesd # You must uncomment the run=yes line below for cachefilesd to start. # Before doing so, please read /usr/share/doc/cachefilesd/howto.txt.gz as # extended user attributes need to be enabled on the cache filesystem. RUN=yes # Additional options that are passed to the Daemon. DAEMON_OPTS=""
$ cat /proc/fs/fscache/stats FS-Cache statistics Cookies: n=0 v=0 vcol=0 voom=0 Acquire: n=0 ok=0 oom=0 LRU : n=0 exp=0 rmv=0 drp=0 at=0 Invals : n=0 Updates: n=0 rsz=0 rsn=0 Relinqs: n=0 rtr=0 drop=0 NoSpace: nwr=0 ncr=0 cull=0 IO : rd=0 wr=0 RdHelp : RA=0 RP=0 WB=0 WBZ=0 rr=0 sr=0 RdHelp : ZR=0 sh=0 sk=0 RdHelp : DL=0 ds=0 df=0 di=0 RdHelp : RD=0 rs=0 rf=0 RdHelp : WR=0 ws=0 wf=0
Modify mount option for NFS and add -o fsc. Mount it again.