Operating Systems Linux Red Hat Memory problems in NFS client server Post 302633705 by blast on Wednesday 2nd of May 2012 10:42:24 AM
Hi mark54g,

Thanks in advance.

I don't think that is the case because i m considering free memory as free + plus buffers and cache.

for example:
free -m
total used free shared buffers cached
Mem: 3767 1684 2082 0 327 871
-/+ buffers/cache: 485 3281
Swap: 1999 0 1999

used memory is 485 and free 3281.

the picture now is good (because i did the umount/mount) lots of free memory (3281) but in a couple of days free memory will tend to 0. i never let it get to 0 because the memory is in "really" used state.

i can put a script in cron to umount and mount the nfs fs but i would like to know and correct this behavior if possible.

Can it be something like a nfs caching? i used the noac option to disable the file attribute caching and so the client as to go all the times to the server to check the status of the file

What do you think?

Thanks
 
Test Your Knowledge in Computers #536
Difficulty: Medium
The "null" keyword is only used to refer to uninitialized or missing data.
True or False?

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mountd(1M)																mountd(1M)

NAME
mountd - server for NFS mount requests and NFS access checks SYNOPSIS
/usr/lib/nfs/mountd [-v] [-r] mountd is an RPC server that answers requests for NFS access information and file system mount requests. It reads the file /etc/dfs/sharetab to determine which file systems are available for mounting by which remote machines. See sharetab(4). nfsd running on the local server will contact mountd the first time an NFS client tries to access the file system to determine whether the client should get read-write, read-only, or no access. This access can be dependent on the security mode used in the remoted procedure call from the client. See share_nfs(1M). The command also provides information as to what file systems are mounted by which clients. This information can be printed using the show- mount(1M) command. The mountd daemon is automatically invoked by share(1M). Only super user can run the mountd daemon. The options shown below are supported for NVSv2/v3 clients. They are not supported for Solaris NFSv4 clients. -r Reject mount requests from clients. Clients that have file systems mounted will not be affected. -v Run the command in verbose mode. Each time mountd determines what access a client should get, it will log the result to the con- sole, as well as how it got that result. /etc/dfs/sharetab shared file system table See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWnfssu | +-----------------------------+-----------------------------+ nfsd(1M), share(1M), share_nfs(1M), showmount(1M), nfs(4), sharetab(4), attributes(5) Since mountd must be running for nfsd to function properly, mountd is automatically started by the svc:/network/nfs/server service. See nfs(4). Some routines that compare hostnames use case-sensitive string comparisons; some do not. If an incoming request fails, verify that the case of the hostname in the file to be parsed matches the case of the hostname called for, and attempt the request again. 27 Apr 2005 mountd(1M)

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