Monthly Archives: November 2022

Extend LVM space to the rest of the free space on the disk

Recently, we formatted a server with Ubuntu 22.04 LTS. While selecting the disk settings, we selected the encrypted LVM partition scheme, and even though we selected the whole disk, we did not notice that the LVM would only allocate, by default, 100GB out of the 600GB available on the raid volume.

So, we proceeded with the installation, and at some point, we noticed that we ran out of space which should not have happened.

Using the command df -h we quickly spotted the problem:

$ df -h
Filesystem                 Size  Used Avail Use% Mounted on
tmpfs                      3,2G  3,9M  3,2G   1% /run
/dev/mapper/vgubuntu-root  100G   83G   17G  83% /
tmpfs                       16G   40M   16G   1% /dev/shm
tmpfs                      5,0M  4,0K  5,0M   1% /run/lock
/dev/sda5                  703M  257M  395M  40% /boot
/dev/sda1                  511M   24K  511M   1% /boot/efi
tmpfs                       16G     0   16G   0% /run/qemu
tmpfs                      3,2G  156K  3,2G   1% /run/user/1000

/dev/mapper/vgubuntu-root was only 100GB instead of the 600GB that we would expect it to be.

Using the command vgdisplay we verified that the space allocated to the logical volume group was not what we wanted.

To fix the problem, we issued the following commands:

lvextend -l +100%FREE /dev/ubuntu-vg/ubuntu-lv;
resize2fs /dev/mapper/ubuntu--vg-ubuntu--lv;

lvextend instructed our logical volume to consume all the available space on the hosting disk.

Then resize2fs allocated all the available space to our partition.

How to Disable Google Ad ID Tracking on Android

The key that permits the majority of third-party tracking on mobile devices is the ad identifier, also known as “IDFA” on iOS or “AAID” on Android. Disabling it will reduce the quantity of your personal data that is available for sale and make it much more difficult for advertisers and data brokers to monitor and profile you.

Here’s how you may immediately deny trackers access to your ad ID using Android:
With the introduction of Android 12, Google started enabling consumers to permanently erase their ad IDs. You can launch the Settings app on a device with this feature enabled and go to Privacy > Ads. On the following page, touch “Delete advertising ID” once more for confirmation. Any app on your phone won’t be able to access it again after doing this.