Hey,
im trying to get fscache to work for a nfs share
but for some reasons fscache is not active and the cache-dir
is not beeing used.
This is what I did so far:
fetch the git tree, reset to fscache-commit version (44) and apply patches.
Linux NFS-Cache 2.6.29-rc1-00534-g7cb36b6-dirty #1 SMP Mon Feb 2 14:42:32 CET 2009 i686 QEMU Virtual CPU version 0.9.1 GenuineIntel
I compiled the nfs-utils by miself and tryed the once provided via rpm
mount.nfs (linux nfs-utils 1.0.9) (from rpm)
mount.nfs (linux nfs-utils 1.0.11) (from src)
build cachefilesd (ver. 0.9)
mount:
/dev/hda3 on / type ext3 (rw,noatime,user_xattr)
1.2.3.4:/hdisk3 on /mnt/nfs type nfs (rw,bg,intr,soft,fsc,nolock,tcp,addr=1.2.3.4)
^^^
/dev/loop0 on /var/fscache type ext3 (rw,loop=/dev/loop1,user_xattr)
when cachefsd is started:
Feb 3 11:27:51 NFS-Cache cachefilesd[4448]: About to bind cache
Feb 3 11:27:51 NFS-Cache FS-Cache: Cache "mycache" added (type cachefiles)
Feb 3 11:27:51 NFS-Cache CacheFiles: File cache on loop1 registered
Feb 3 11:27:51 NFS-Cache cachefilesd[4448]: Bound cache
Feb 3 11:27:51 NFS-Cache cachefilesd[4449]: Daemon Started
Feb 3 11:27:51 NFS-Cache cachefilesd[4449]: --> build_cull_table({})
Feb 3 11:27:51 NFS-Cache cachefilesd[4449]: dir_read_complete: u=2 e=0
Feb 3 11:27:51 NFS-Cache cachefilesd[4449]: Scan complete
Feb 3 11:27:51 NFS-Cache cachefilesd[4449]: <-- build_cull_table({})
Feb 3 11:28:21 NFS-Cache cachefilesd[4449]: Refilling cull table
Feb 3 11:28:21 NFS-Cache cachefilesd[4449]: --> build_cull_table({})
cat /etc/cachefilesd.conf
dir /var/fscache
tag mycache
brun 10%
bcull 7%
bstop 3%
frun 10%
fcull 7%
fstop 3%
ls -laR /var/fscache
/var/fscache:
total 20
drwxr-xr-x 5 root root 1024 Feb 2 12:50 .
drwxr-xr-x 15 root root 4096 Feb 2 13:22 ..
drwx------ 2 root root 1024 Feb 2 12:50 cache
drwx------ 2 root root 1024 Feb 2 12:50 graveyard
drwx------ 2 root root 12288 Feb 2 12:48 lost+found
/var/fscache/cache:
total 3
drwx------ 2 root root 1024 Feb 2 12:50 .
drwxr-xr-x 5 root root 1024 Feb 2 12:50 ..
/var/fscache/graveyard:
total 2
drwx------ 2 root root 1024 Feb 2 12:50 .
drwxr-xr-x 5 root root 1024 Feb 2 12:50 ..
/var/fscache/lost+found:
total 13
drwx------ 2 root root 12288 Feb 2 12:48 .
drwxr-xr-x 5 root root 1024 Feb 2 12:50 ..
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/hda3 9.2G 4.0G 4.9G 45% /
udev 10M 152K 9.9M 2% /dev
shm 351M 0 351M 0% /dev/shm
1.2.3.4:/hdisk3 29G 5.5G 23G 20% /mnt/nfs
/dev/loop0 95M 5.6M 85M 7% /var/fscache
cat /proc/fs/fscache/stats
FS-Cache statistics
Cookies: idx=2 dat=0 spc=0
Objects: alc=0 nal=0 avl=0 ded=0
ChkAux : non=0 ok=0 upd=0 obs=0
Pages : mrk=0 unc=0
Acquire: n=2 nul=0 noc=0 ok=2 nbf=0 oom=0
Lookups: n=0 neg=0 pos=0 crt=0
Updates: n=0 nul=0 run=0
Relinqs: n=0 nul=0 wcr=0
AttrChg: n=0 ok=0 nbf=0 oom=0 run=0
Allocs : n=0 ok=0 wt=0 nbf=0
Allocs : ops=0 owt=0
Retrvls: n=0 ok=0 wt=0 nod=0 nbf=0 int=0 oom=0
Retrvls: ops=0 owt=0
Stores : n=0 ok=0 agn=0 nbf=0 oom=0
Stores : ops=0 run=0
Ops : pend=0 run=0 enq=0
Ops : dfr=0 rel=0 gc=0
cat /proc/fs/fscache/histogram
JIFS SECS OBJ INST OP RUNS OBJ RUNS RETRV DLY RETRIEVLS
===== ===== ========= ========= ========= ========= =========
cat /proc/fs/nfsfs/volumes
NV SERVER PORT DEV FSID FSC
v3 c25f51d1 801 0:17 812:0 no
So to me it looks like FSC is not used even through the mount option
is shown (by the mount cmd).
Can somebody give me a hint how to track this problem.
Thanks
flip
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