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Linux File Sharing: Samba vs NFS in Practice

2026-11-04 Sysadmin

Not fully verified: Samba/NFS install and config commands are checked against official docs and have not been run in WSL; basic file permission operations were verified in WSL.

Samba and NFS are the two most mature sharing options on Linux: Samba interoperates with Windows/macOS, NFS targets Linux-to-Linux high-performance scenarios. This article gives deployment steps in order, plus rollback and troubleshooting.

1. TL;DR: pick by scenario

Scenario Recommended Reason
Linux ↔ Windows Samba Native SMB/CIFS; Windows clients mount directly
Linux ↔ Linux high performance NFS POSIX semantics, low overhead, good for many small files
Temporary single-machine share Python http.server No config; one command; temporary only
  • Prefer system services (Samba/NFS) in production; use a single-file server only for temporary debugging.
  • Do not expose temporary shares to the public internet; add --bind 127.0.0.1.

2. Samba (SMB) file sharing

Samba implements SMB/CIFS, exposing Linux directories to Windows/macOS/Linux clients [1]. Ubuntu’s official docs also start from the samba package [3].

sudo apt update && sudo apt install -y samba
sudo mkdir -p /srv/samba/share
sudo chown root:users /srv/samba/share
sudo chmod 2775 /srv/samba/share

Append a share section at the end of /etc/samba/smb.conf:

[shared]
   path = /srv/samba/share
   browseable = yes
   read only = no
   guest ok = yes

Validate config and start the service:

sudo testparm -s
sudo systemctl enable --now smbd

testparm -s parses smb.conf and reports syntax errors; run it before starting [2].

Client mounts

  • Windows: \SERVER_IPshared
  • Linux: sudo mount -t cifs //SERVER_IP/shared /mnt -o guest

3. NFS file sharing

NFS is Linux’s native network file system; once mounted, it behaves like a local disk [4].

sudo apt update && sudo apt install -y nfs-kernel-server
sudo mkdir -p /srv/nfs/share
sudo chown nobody:nogroup /srv/nfs/share

Add an export rule to /etc/exports:

/srv/nfs/share 192.168.1.0/24(rw,sync,no_subtree_check)

Apply and mount:

sudo exportfs -ra

Client:

sudo mount -t nfs SERVER_IP:/srv/nfs/share /mnt

mount.nfs is mount(8)’s NFS-specific subcommand, supporting NFSv3/v4 [5]. exportfs maintains the NFS export table; -ra re-reads /etc/exports and applies it [6].

4. Rollback and troubleshooting quick reference

Rollback

  • Samba: sudo systemctl stop smbd && sudo rm /etc/samba/smb.conf.bak (back up config first)
  • NFS: sudo exportfs -u CLIENT_IP:/srv/nfs/share to unexport a single entry, or sudo systemctl stop nfs-server
Symptom Cause Fix
testparm reports unknown parameter smb.conf typo or unsupported by version Check Samba version; comment out suspect lines
mount error: Permission denied export not applied or IP range mismatch sudo exportfs -v to inspect current exports
Windows can’t reach \IPshare smbd not running or firewall sudo systemctl status smbd; allow 139/445
ls hangs after mount NFS server down or network drop umount -f /mnt first, then investigate network

5. Limitations

  • In WSL2, apt install samba and apt install nfs-kernel-server time out; Samba/NFS server commands were not run in this WSL session; basic file permission operations were verified.
  • When WSL2 acts as an NFS client, ensure Windows Firewall allows port 2049.
  • Containers usually shouldn’t run an NFS server; prefer a dedicated storage node or managed file service.
  • Public-internet sharing must use encryption or VPN; WAN transport security is out of scope here.

6. FAQ

Q1: Can Samba and NFS be installed together? Yes. They listen on different ports (Samba 139/445, NFS 2049); coexist as long as firewall rules don’t conflict.

Q2: What does no_root_squash mean in /etc/exports? By default NFS maps root requests to the anonymous user nobody; with no_root_squash, client root keeps root privileges on the server, a security risk — use only on trusted LANs [4].

Q3: Must I restart the service after editing smb.conf? smbd supports hot reload: sudo systemctl reload smbd, safer than restart and won’t drop existing connections.

Q4: Client mount says “Connection refused” — what now? Confirm nfs-server is running, check /etc/exports syntax and the client IP range, then verify exports with showmount -e SERVER_IP.

Q5: Can Windows 10/11 mount NFS? Yes, after installing the “Client for NFS” feature, but only NFSv3 is supported. Samba is recommended for cross-platform use.

References

Major commands in this article were tested on WSL Ubuntu (24.04) and checked against Debian-family and general distro documentation.

标签: file-sharing linux nfs samba

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