如何在AWS EC2实例中增加磁盘的逻辑卷

Question

df -h command returns

[root@ip-SERVER_IP ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1      7.8G  5.5G  2.0G  74% /
tmpfs            32G     0   32G   0% /dev/shm
cm_processes     32G     0   32G   0% /var/run/cloudera-scm-agent/process

I have a volume with 500GB of disk space.

Now, I installed some stuff in /dev/xvda1 and it keeps saying that:

The Cloudera Manager Agent's parcel directory is on a filesystem with less than 5.0 GiB of its space free. /opt/cloudera/parcels (free: 1.9 GiB (25.06%), capacity: 7.7 GiB)

Similarly:

The Cloudera Manager Agent's log directory is on a filesystem with less than 2.0 GiB of its space free. /var/log/cloudera-scm-agent (free: 1.9 GiB (25.06%), capacity: 7.7 GiB)

From the memory stats, I see that the Filesystem above stuff is installed in must be:

/dev/xvda1

I believe it needs to be resized so as to have more disk space but I don't think I need to expand the volume. I have only installed some stuff and started with it.

So I would like to know what exact steps I need to follow to expand the space in this partition and where exactly is my 500 GB?

I would like to know it step by step since I cannot afford to lose what I have on the server already. Please help

lsblk:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT 
xvda 202:0 0 500G 0 disk 
└─xvda1 202:1 0 8G 0 part /

Answer 1

1. This question should be asked under serverfault.com.

2. Don't "expand" the volume. It is not common practice to expand root drive in Linux for none-OS folder. Since your stuff is inside /opt/cloudera/parcels , what you need to do is allocate a new partition, mount it, then copy for it. example is shown here : paritioning & moving . (assume /home is your /top/cloudera/parcels".

3. To check your disk volume , try this sudo lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL

(update) In fact, if you create your EC2 instance under EBS volume, you don't need to allocate 500GB upfront. You can allocate smaller space, then expand the disk space following this step : Expanding the Storage Space of an EBS Volume on Linux . You should create a snapshot for the EBS before perform those task. However, there is a catch of EBS disk IOPS, if you allocate less space, there will be less IOPS given. So if you allocate 500GB , you will get 500x 3 = max 1500 IOPS.

Answer 2

该AWS LVM链接为您提供了有关如何在AWS EC2中增加逻辑卷大小的分步说明