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vault backup: 2023-01-16 10:41:14

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Paul Trowbridge 2023-01-16 10:41:14 -05:00
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hard_disks.md
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@ -23,3 +23,24 @@
UUID="86e81045-a0dc-4881-8ddb-5ef25834ea5a" /datadrive xfs defaults,nofail 1 2
```
* somehow in the process an new systemctl service module is loaded based on fstab at runs at boot
## lvm (logical volume manager)
`vgs` to list volume groups
`vgdisplay` to show all info for a volume group
`lvs` to show logical volumes
Given a logical volume `group` you can extend the size of a `logical volume` inside that group.
```
sudo lvextend -L+100G /dev/ubuntu-vg/ubuntu-lv
```
now if you do `lsblk` the size of the disk has grown but filesystem still needs to be extended as per `df`
use `resize2fs` to expand the file system to take up all the disk space
```
ptrowbridge@usmidsap01:/var/log/postgresql$ sudo resize2fs /dev/ubuntu-vg/ubuntu-lv
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/ubuntu-vg/ubuntu-lv is mounted on /; on-line resizing required
old_desc_blocks = 13, new_desc_blocks = 25
The filesystem on /dev/ubuntu-vg/ubuntu-lv is now 52428800 (4k) blocks long.
```