[Xfce-bugs] [Bug 14718] symlink on read-only NFS share to redirect homedirectory prevents thunar from copy/paste to homedirectory

[bugzilla-daemon at xfce.org]

https://bugzilla.xfce.org/show_bug.cgi?id=14718

--- Comment #2 from René Genz <liebundartig at freenet.de> ---
Thank you for very fast and detailed feedback.
I try to set up a Fedora 29 computer in our productive environment. That will
take some time.

I found a way to reproduce the problem on a single computer with local
accounts. The computer is NFS server and client at the same time.


## as far as I remember I did this (I forgot to take notes)

# download ISO file:
#firefox https://getfedora.org/en/workstation/prerelease/
wget --timestamping
"https://download.fedoraproject.org/pub/fedora/linux/releases/test/29_Beta/Workstation/x86_64/iso/Fedora-Workstation-netinst-x86_64-29_Beta-1.5.iso"

# prepare test computer
# with ISO file install Fedora 29 x86_64 virtual machine with Xfce desktop; no
subgroups enabled
# create user account; pick a name you like, this account will be referenced
with "USER"
# we will create another local account to reproduce the bug; this account is
referenced with "name"

# log in to virtual machine with GUI to enable SSH for easier access from host;
maybe sshd.service had been enabled by default, I cannot remember
sudo systemctl enable --now sshd.service
# in case of problems try to disable firewall
sudo systemctl disable --now firewalld.service


## at this point I started to take notes

# log in with SSH to guest
ssh USER at GUEST

# switch to root
sudo su

# install NFS server
dnf install -y nfs-utils

# create directories for NFS shares and mountpoints
mkdir /share1 /share2 /mount1 /mount2

# configure shares
echo "/share1    localhost(ro)" | sudo tee -a "/etc/exports"
echo "/share2    localhost(rw)" | sudo tee -a "/etc/exports"

# start NFS server on system start; and right now
systemctl enable --now nfs-server.service

# create user account
useradd -m name

# set password
passwd name

# change path of user home directory
vipw
# change from:
#name:x:1001:1001::/home/name:/bin/bash
# to:
#name:x:1001:1001::/mount1/name:/bin/bash

# move user home directory
mv /home/name /share2

# create symlink
ln -s /share2/name ../share1

# mount NFS shares to mountpoints
echo "localhost:/share1   /mount1  nfs ro,defaults 0 0" | sudo tee -a
"/etc/fstab"
echo "localhost:/share2   /mount2  nfs rw,defaults 0 0" | sudo tee -a
"/etc/fstab"

# reload server configuration
systemctl reload nfs-server.service

# SELinux: disable permanently
vim /etc/selinux/config
# change from:
SELINUX=enforcing
# to:
SELINUX=disabled
# reboot required
reboot


# log in to GUI session with user "name"

# start thunar from lower panel; "`thunar` -- Help -- About" prints version:
1.8.1; package is: Thunar-1.8.1-20.fc29.x86_64 (rpm -qf `which thunar`)
# in `thunar` address bar displays path "/share2/name/"
# you can create files and folders with thunar in the directory
# you can copy-paste files and folders with and without content from and to the
directory (select file/folder, press Ctrl+c, press Ctrl+v)


# to reproduce the bug:
# in `thunar` on left side at "PLACES" click on home directory icon labeled
"name"
# address bar displays path "/mount1/name/"
# you can create files and folders with thunar in the directory
# you can copy-paste files without content from and to the directory (select
file, press Ctrl+c, press Ctrl+v)
# you cannot copy-paste folders with and without content from and to the
directory
# you cannot copy-paste files with content (single character is sufficient)
from and to the directory
# error message appears:
---8<---
Error while copying to "name".
The destination is read-only.
[Close]
---8<---


## useful commands
# list running sessions
loginctl
# kill a stuck session
loginctl kill-session 4

# delete user folder and account to start over
rm -rf /share2/name

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