SUNScholar/Upgrading/Hardware/Add a New Disk

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WE CANNOT ACCEPT RESPONSIBILITY FOR ANY DATA LOSS.
THIS PROCEDURE HAS SO FAR BEEN UNTESTED.
DO EXTENSIVE TESTING ON SPARE INFRASTRUCTURE BEFORE PROCEEDING.
YOU PROCEED AT YOUR OWN RISK.
These guidelines are very brief and require someone with Linux experience to execute correctly.

Introduction

After installing and running DSpace for some time you realise your disk is getting full, so you arrange to buy a new bigger disk. But how do you use it in Dspace as a new asseststore. Read below for brief how-to.

Step 1

Determine the kernel hardware label for the new disk.

After connecting the new disk to the server and rebooting, login to the server using a console and type;

sudo fdisk -l

This command will list all the disks attached and the kernel label used.

Step 2

Create a linux partition on the new disk.

Assuming that you identified the new disk as /dev/sdb, from step 1 above, then type the following to create a single linux ext4 partition on the new disk;

sudo -i

parted /dev/sdb mklabel gpt

parted /dev/sdb mkpart primary ext4

parted /dev/sdb print

exit

Step 3

Make a linux filesystem on the new disk.

Step 2 above should have created a single primary linux partition on the disk.

Type the following to create an ext4 file system on the disk;

sudo mkfs.ext4 /dev/sdb1

Step 4

Make a mount point on the linux file system for the new disk.

Since the new disk will be used for an added asset store, we create the mount folder where DSpace was installed.

sudo mkdir /home/dspace/assetstore/two

Step 5

Mount the new disk to the mount point on the linux file system.

The quick way is to type the following;

sudo mount /dev/sdb1 /home/dspace/assetstore/two

A better way is to add the disk to the file /etc/fstab. This way the disk will be mounted as a permanent part of the file system, even during server reboots.

• First we determine the UUID of the new disk.

sudo blkid /dev/sdb1

• The result may be something like;

/dev/sdb1: UUID="8b6ec31c-1f41-49f3-82da-d2ab0f0fa312" TYPE="ext4"

• We open the /etc/fstab file for editing;

sudo nano /etc/fstab

• Add the following to the bottom of the file, using the disk UUID identified above; (You can use copy-and-paste as usual for quick editing)

UUID="8b6ec31c-1f41-49f3-82da-d2ab0f0fa312 /home/dspace/assetstore/two     ext4    defaults,user        0       2

---

NANO Editor Help

CTL+O	= Save the file and then press Enter
CTL+X	= Exit "nano"
CTL+K	= Delete line
CTL+U	= Undelete line
CTL+W	= Search for %%string%%
CTL+\	= Search for %%string%% and replace with $$string$$
CTL+C	= Show line numbers

More info = http://en.wikipedia.org/wiki/Nano_(text_editor)

---

• Now to mount it type;

sudo mount -a

Step 6

Now add assetstore/two to your DSpace config file and restart Tomcat.

Definitions

• http://en.wikipedia.org/wiki/Disk_partitioning
• http://en.wikipedia.org/wiki/List_of_disk_partitioning_software
• http://en.wikipedia.org/wiki/Fdisk
• http://en.wikipedia.org/wiki/Parted
• http://en.wikipedia.org/wiki/Mkfs
• http://en.wikipedia.org/wiki/Fstab

---

• https://wiki.archlinux.org/index.php/ext4
• https://ext4.wiki.kernel.org/index.php/Ext4_Howto

References

• https://help.ubuntu.com/community/InstallingANewHardDrive
• http://www.ghacks.net/2009/09/10/add-a-second-drive-to-your-ubuntu-server
• http://www.howtogeek.com/106873/how-to-use-fdisk-to-manage-partitions-on-linux