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Showing posts from December, 2022

Making your drive larger if you have a LVM drive

LVM is the Logical Volume Mapper, which lets you tell Linux that a volume (drive or partition) is part of a group of volumes/drives/partitions, which are considered one drive and which act together as one, called a "volume group".  If you run out of space on a Linux machine and you are using LVM, you can enlarge the drive and make it act as if it were a single drive, by adding another drive and then telling it to add that drive to the LVM volume group. You can tell that your drive is LVM if you see mention of LVM in the output of the "disk free" command, df. Note the wording "dev/mapper" Filesystem                         Size   Used Avail Use% Mounted on udev                               399M     0   399M   0% /dev tmpfs                               85M   956K   84M   2% /run /dev/mapper/ubuntu--vg-ubuntu--lv   194G   93G   93G   51% / Here's the simplest way to do it. Assume you have an existing drive called /dev/sda1, and it is almost full. Assume

/var/log/journal taking up lots of space

 If /var/log/journal is taking up too much space, you can clear it and prevent it growing too big again. Prevention: vi /etc/systemd/journald.conf   Look for: SystemMaxUse=2000M Or similar, and set it to a lower value Then: service systemd-journald restart Clearing once-off: journalctl --vacuum-time=2d assuming for example you want to clear everything before two days ago.