46 lines
1.7 KiB
Markdown
46 lines
1.7 KiB
Markdown
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## RAID edits
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* Enter the system setup menu at boot time, then you also have to press additional keys to get to the RAID screen
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* create a new virtual disk and assign the new disks, then initialize the VD
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## Mounting the new VD
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* find the disk with `fdisk -l | grep '^Disk'`
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* create a partition table
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* `fdisk /dev/sdb`
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* `p` to list partition table if any
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* `n` to create a new partition
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* `w` to write the new partition
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* format the new partition with `mkfs.ext4 /dev/sdb1`
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* create an access folder, maybe at //mnt/backup
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* run the mount `mount /dev/sdb1 /mnt/backup`
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* edit fstab by adding
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* using device name
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```
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//dev/sdb1 /mnt/backup ext4 defaults 1 2
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```
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* using UUID (do `sudo blkid` to get the UUID)
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```
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UUID="86e81045-a0dc-4881-8ddb-5ef25834ea5a" /datadrive xfs defaults,nofail 1 2
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```
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* somehow in the process an new systemctl service module is loaded based on fstab at runs at boot
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## lvm (logical volume manager)
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`vgs` to list volume groups
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`vgdisplay` to show all info for a volume group
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`lvs` to show logical volumes
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Given a logical volume `group` you can extend the size of a `logical volume` inside that group.
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```
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sudo lvextend -L+100G /dev/ubuntu-vg/ubuntu-lv
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```
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now if you do `lsblk` the size of the disk has grown but filesystem still needs to be extended as per `df`
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use `resize2fs` to expand the file system to take up all the disk space
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```
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ptrowbridge@usmidsap01:/var/log/postgresql$ sudo resize2fs /dev/ubuntu-vg/ubuntu-lv
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resize2fs 1.46.5 (30-Dec-2021)
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Filesystem at /dev/ubuntu-vg/ubuntu-lv is mounted on /; on-line resizing required
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old_desc_blocks = 13, new_desc_blocks = 25
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The filesystem on /dev/ubuntu-vg/ubuntu-lv is now 52428800 (4k) blocks long.
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``` |