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Update disks.txt

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IntenseWebs 2024-04-27 18:01:21 -05:00
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disks.txt
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@ -1,3 +1,4 @@
# https://linuxconfig.org/linux-lvm-logical-volume-manager
# apt-get install lvm2
fdisk -l
lsblk
@ -13,6 +14,35 @@ hwinfo --short --block
pvs
vgs
lvs
sudo hdparm -t --direct /dev/nvme0n1p1
# CREATE LVM VOLUME(s)
pvcreate /dev/sdb
vgcreate vg_extra /dev/sdb
vgdisplay
lvcreate vg_extra -L 400G -n vg-iso
lvcreate vg_extra -L 500G -n vg-vm
lvcreate vg_extra -L 900G -n vg-backups
lvdisplay
mkfs.ext4 -m 0 /dev/vg_extra/vg-iso
mkfs.ext4 -m 0 /dev/vg_extra/vg-vm
mkfs.ext4 -m 0 /dev/vg_extra/vg-backups
mkdir /iso && mkdir /vm && mkdir /backups
vi /etc/fstab
/dev/vg_extra/vg-iso /iso ext4 defaults 0 0
/dev/vg_extra/vg-vm /vm ext4 defaults 0 0
/dev/vg_extra/vg-backups /backups ext4 defaults 0 0
systemctl daemon-reload
mount -a
# REMOVE LVM VOLUME
lvremove /dev/vg_extra/vg-backups
# PARTITION ON CMD LINE
lsblk
umount /dev/sdb1
# cfdisk /dev/sdb
fdisk /dev/sdb # then p, g, n, w, q
# RESIZE LVM AS ROOT: https://www.golinuxcloud.com/lvm-shrink-logical-volume/
df -hT /home
@ -27,6 +57,7 @@ mount /dev/mapper/pg--vg-home /home
lvextend -L+4G /dev/mapper/zeus--vg-var
# resize the ext4 filesystem in logical volume zeus-vg/var to the new volume size
resize2fs /dev/mapper/zeus--vg-var
# lvextend --resizefs -l +100%FREE /dev/mapper/vg_debian-lv_root
#RESIZE ext4 - # unmount /home because an ext4 filesystem cannot be reduced while mounted
umount /home
@ -47,3 +78,15 @@ mkdir 1TBNVME
vi /etc/fstab
/dev/sda1 /media/2TBSEAGATE ext4 defaults 0 2
/dev/nvme1n1p1 /media/1TBNVME ext4 defaults 0 2
# CREATE NEW SNAPSHOT
lvcreate /dev/mapper/<SOURCE VOLUMEGROUP NAME> -L 1G -s -n snapshot_name
lvs
# Mount a snapshot
mount /dev/mapper/vg_extra-web_snapshot_20240624 /mnt/extra/snapshot
# Restore a snapshot, Umount the original volume:
umount /path/to/mounted/logical-volume
lvconvert --merge /dev/mapper/snapshot_name
# Deactivate/reactivate to fresh it:
lvchange -an /dev/mapper/vg_extra-lv_web
lvchange -ay /dev/mapper/vg_extra-lv_web