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Jun
30
comment NFSv3 client differences in read/write performance
server side problems usually related to IO subsystem. For example if you have less than 5% of free space, one of the disk has IO errors or battery of raid controller is broken.
Jun
29
comment NFSv3 client differences in read/write performance
I would check network latensy first. Second what you can do is to check with packet trace time difference between TCP ACK reply ( time when server received TCP request) and RPC reply. This difference will indicate how long server was processing the request. After that you know where the problem is: server or network.
Jun
27
comment Ubuntu client can't mount Nexenta NFS
new linux clients are using nfsv4 by default. Did you try with explicit '-o vers=3'?
Jun
23
revised Finding users responsible for thrashing an NFS mount
deleted 4 characters in body
Jun
23
answered Finding users responsible for thrashing an NFS mount
Jun
3
comment Some users cannot write via NFS, but others can
check with wireshark that cedentioals used by write request matches to directory/file owner ship. ( and i guess acl are not used )
May
31
comment Opennebula is very slow copying disk image
try to mount as NFSv3 ( -o vers=3)
May
25
comment Can't read ACL on NFS4 share, Solaris 10 client, CentOS 7 server
can be encoding problem between client and server. Solaris 10 expects ASCII in nfs domain: github.com/kofemann/opensolaris/blob/…
May
11
comment Create and Manage Windows NFS Shares for Linux Clients with AD Authentication
you should enable RPCSEC_GSS on NFS server. AD is a kerberos server with build in LDAP. Check here blogs.technet.com/b/filecab/archive/2010/05/13/…
May
7
answered Wrong ldap user and group IDs on nfs
May
7
comment NFS local user mapping works, but not with sudo
you can export with no_root_squash and later on change files ownership to desired uid/gid
May
7
comment Wrong ldap user and group IDs on nfs
duo able yo query ldap server from problematic nodes? Try to clean idmap cache by running 'nfsidmap -c'. Start rpc.idmapd in in a debug mode (rpc.idmapd -f -v) and watch the requests.
Apr
24
comment NFS poor write performance
install tuned package and use throughput-performance profile (tuned-adm profile throughput-performance). Set rsize/wsize to 65536. Try nfs3 ( mount -o vers=3 ...)
Apr
23
comment How to set up pNFS on CentOS
4.0 . There are custom builds available from elrepo repository.
Apr
23
revised Why is an nfs server mounted as rw returning read only filesystem errors
edited body
Apr
23
answered How to set up pNFS on CentOS
Apr
8
comment NFS: client does not see new files created on server (caching?)
then description is wrong:* On the server I do a touch /data/test*
Apr
8
comment NFS: client does not see new files created on server (caching?)
if you have exported /media/data/ on the server how you can expect that changes in /data/ will be visible on the client? /data/ is not a subdirectory of /media
Mar
26
comment Random machine hangs with NFSv4 on CentOS/RHEL 6.5
are you sure, that user's kerberos token is still valid?
Mar
25
comment Passing Linux NFS traffic through Windows Server 2008
try with -o tcp. Can you get a packet capture?