nas:build_a_linux_nas
This is an old revision of the document!
Table of Contents
NAS - Build a Linux NAS
Create a Software RAID Array
sudo mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sdb1 /dev/sdc1 /dev/sdd1 or sudo mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 --spare-devices=1 /dev/sd{b,c,d, e}1
NOTE: This created a new block device /dev/md0.
- This device represents the RAID 5 of /dev/sdb1, /dev/sdc1 and /dev/sdd1.
- Obviously other RAID types could be used instead.
Ensure the RIAD Array is reassembled automatically each time the system boots
sudo mdadm --detail --scan | sudo tee -a /etc/mdadm/mdadm.conf
NOTE: This saves the RAID configuration in the /etc/mdadm/mdadm.conf file.
- In the background, mdadm will sync the data of these disks.
- This can take a very long time as it requires reading and writing a lot of data depending on the size of the disks.
Check the RAID Status
sudo mdadm --detail /dev/md0
returns:
NOTE: This also displays not only the health, but also the sync status.
Create a Filesystem
sudo mkfs.ext4 /dev/md0
NOTE: /dev/md0 can be used now just as any other block device.
Mount the Array
sudo mkdir /mnt/nas sudo mount /dev/md0 /mnt/nas
Check the Mount
lsblk
returns:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 232.9G 0 disk ├─sda1 8:1 0 1007K 0 part ├─sda2 8:2 0 512M 0 part /boot/efi ├─sda3 253:28 0 8G 0 part [SWAP] ├─sda4 253:29 0 58G 0 part / sdb 8:32 0 14.6T 0 disk ├─md0 9 0 14.6T 0 raid5 /mnt/nas sdc 8:48 0 14.6T 0 disk ├─md0 9 0 14.6T 0 raid5 /mnt/nas sdd 8:64 0 14.6T 0 disk ├─md0 9 0 14.6T 0 raid5 /mnt/nas
Test writing to the mounted array
sudo touch /mnt/nas/test ls -al /mnt/nas/
returns:
total 24 drwxr-xr-x 3 root root 4096 Feb 14 11:19 . drwxr-xr-x 4 root root 4096 Feb 14 11:19 .. drwx------ 2 root root 16384 Feb 14 11:19 lost+found -rw-r--r-- 1 root root 0 Feb 14 11:19 test
Ensure the array always get mounted on boot
echo '/dev/md0 /mnt/nas ext4 defaults,nofail 0 0' | sudo tee -a /etc/fstab
returns:
/dev/md0 /mnt/nas ext4 defaults,nofail 0 0
NOTE: This adds an entry into the /etc/fstab file.
Create Samba Share
Save a backup of the default Samba Config.
sudo cp /etc/samba/smb.conf /etc/samba/smb.conf.orig
Now edit the Samba Config file, /etc/samba/smb.conf, and populate as:
- /etc/samba/smb.conf
[global] workgroup=WORKGROUP server min protocol = SMB2 server max protocol = SMB3 server string = NAS log file = /var/log/samba/%m.log [data] path = /mnt/nas/data available = yes valid users = peter read only = no browseable = yes writable = yes
Create a Samba user
sudo smbpasswd -a peter
returns:
Added user peter.
NOTE: Make sure that the user has permissions to the files on system level as well.
Test Access to the Share
Within a Web Browser, enter
//192.168.1.5/data
NOTE:
- 192.168.1.5: The IP Address of the NAS.
- Obviously use whatever IP address that device has.
- data: The name of the Samba Share, as defined in the Samba Config file.
nas/build_a_linux_nas.1632585053.txt.gz · Last modified: 2021/09/25 15:50 by peter