Warn 1: for non-English, use samba/sshfs instead. unless win has NFS v4 or above which can solve non-UTF8 problems.
svchost consumes 1.5GB ram, don’t know why.
See Also Links
Combining simlink (
ln -s) with NFS may cause weird file path problems. We tried to have a link at NFS to Dropbox in nfs, also tried to have a link at home to mount point at /mnt. Both caused some minor path and file issues, but no series problems.
UBUNTU SERVER #
sudo -s apt-get install -y nfs-kernel-server && \ mkdir /nfs && \ chmod -R 777 /nfs && \ chown -R nobody /nfs && \ vim /etc/exports
<absolutePathFolderToShare> 192.168.1.0/24(rw,async,no_subtree_check,all_squash,anonuid=65534,anongid=65534) # e.g.: /nfs *(fsid=0,rw,async,no_subtree_check,no_root_squash,no_all_squash)
fsid=x may be needed. This ID (0~255) must be unique for each shared directory, otherwise the later dir with repeated ID is recognized as an nickname of the previous dir with the same ID [ref].
WARN: it is 192.168.1.0/24, NOT 192.168.1.*
#sudo -s sudo /usr/sbin/exportfs -af && \ sudo service nfs-kernel-server restart && \ sudo service nfs-kernel-server status
-f to flush & fresh.
To change UID/GID when exporting, use
(deprecated) To use usernames instead of IDs, use
echo N > /sys/module/nfs/parameters/nfs4_disable_idmapping. [serverfault]
For Synology NAS, see the official tutorial and my notes.
UBUNTU AS A CLIENT #
sudo -s apt-get -q install -y nfs-common && mkdir -p /mnt/nfsMountPoint && \ mount -t nfs serverIpOrDomain:/absolute/path /mnt/nfsMountPoint -o nolock
-o nolockcan be used for
mount, which disables file locking. This setting is occasionally required when connecting to older NFS servers. ref.
sudo -s apt-get -q install -y nfs-common && mkdir -p /local/nfsMountPoint && \ echo 'nfsServerOrIp:/absolute/path/ /local/nfsMountPoint nfs defaults 0 0' >> /etc/fstab
yum install nfs-utils for CentOS/RedHat/Fedora)
defaults could be replaced by some of
auto,nofail,noatime,nolock,intr,tcp,actimeo=1800. [ ref1, ref2 ]
WINDOWS 7 AS A CLIENT #
set permission #
To have write permission, we need to set
userId:groupId the same as server side.
/etc/passwd for server side folder’s owner, it is usually
1000:1000 (in decimal base) for the 1st non-root ubuntu user, or 65534:65534 for nobody:nogroup.
Modify window regedit (the win sys service should be started once to have this reg key):
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ClientForNFS\CurrentVersion\Default] "AnonymousUid"=dword:000003e8 "AnonymousGid"=dword:000003e8
(if the .reg is used after enabling win NFS feature, restart the windows service or reboot, then remount.)
Enable the windows feature “Client for NFS”. ref
cmd (NOT powerShell !!!)
mount <serverIpOrDomain>:<absolutePathFolderToShare> Z: # e.g.: mount google.com:/home/abc/theFolder Z:
To unmount: use
Note: Persistent NFS mount (after reboot) is not an option with NFS. Also this scenario is not recommended and does not guarantee a sure shot solution (ref).
encoding problem (only in win???) #
Description: files created in win with non-ASCII chars will become question marks ‘?’ in linux, also when read again in win.
Solution: no way to solve, unless NFS v4. see super.user
To check nfs versions on server:
To check on linux clinet:
mount -v; nfsstat -m ref
To check on win client: ？？？
service nfs-kernel-server restart
The right side drive (Z:) is NFS, which shows wrong space usage, and display speed is much slower than SMB (left side, Y:) when mounted in windows. For space usage, by default, ext2/3/4 filesystems reserve 5% of the space to be useable only by root, see ref.