nfs v3 test (by quqi99)

Posted 2021-10-23 quqi99

作者：张华 发表于：2021-08-28
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(http://blog.csdn.net/quqi99 )

刚工作需要做了一个nfs v3的测试，记录一下。

# set up nfs v3 server
sudo apt-get install nfs-kernel-server -y
cat <<EOF | sudo tee -a /etc/exports
/nfs *(rw,sync,no_subtree_check)
EOF
sudo mkdir -p /nfs && sudo chown -R $USER /nfs/
sudo systemctl restart nfs-server

# set up nfs client
showmount -e node1
sudo mkdir -p /mnt/nfs && sudo chown -R $USER /mnt/nfs/
sudo mount -t nfs -o vers=3,proto=tcp,nolock node1:/nfs /mnt/nfs

# prepare backing file
mkdir -p /nfs/images && sudo cp -v /images/kvm/bionic.qcow2 /nfs/images/
chmod 777 /nfs/image/bionic.qcow2

# create two snapshots on the same backing file hosted in NFSv3 server
qemu-img create -f qcow2 -o backing_file=/mnt/nfs/image2/bionic.qcow2 /mnt/nfs/image2/bionic-snap.qcow2
chmod 777 /mnt/nfs/image2/bionic-snap.qcow2
qemu-img create -f qcow2 -o backing_file=/mnt/nfs/image2/bionic.qcow2 /mnt/nfs/image2/bionic-snap2.qcow2
chmod 777 /mnt/nfs/image2/bionic-snap2.qcow2

# create two test VMs with two snapshots

# run dd command on one VM, then restart another VM, but my both VMs run well so I didn't reproduce the problem.


do test with sparse file test with: dd if=/dev/zero of=flat2.img bs=1024k count=0 seek=2048

do test with non-sparse file test with: dd if=/dev/zero of=flat1.img bs=1024k count=1000

20210904更新 - 安装samba

买了个老母鸡(星客云)，安装了armbian,　但运行nfs有问题(无法启动nfs-idmapd)

nfs-idmapd.service: Job nfs-idmapd.service/start failed with result 'dependency'

尝试了很多方法无法解决，还是换成samba吧(在windows上直接设置共享文件夹即可，但这里是linux).
安装配置samba服务端如下：

sudo apt install samba samba-common
sudo chmod 777 /mnt/sda4

# modify smb.conf
root@OneCloud:~# grep -r 'security' /etc/samba/smb.conf -B1
   max log size = 1000
   security = user
root@OneCloud:~# cat /etc/samba/smb.conf |tail -n5
[win_share]
  comment = sda4
  path = /mnt/sda4
  browseable = yes
  writeable = yes

testparm
useradd nfs
smbpasswd -a nfs
systemctl restart smbd

配置samba客户端

# sudo mount -t cifs -o username=nfs,password=password //storage/win_share /mnt/tmp/
# autofs
/mnt/win_share    -fstype=cifs,rw,username=nfs,password=password,file_mode=0777,dir_mode=0777 ://win/win_share

[1] https://sq.sf.163.com/blog/article/218146701477384192