2024-04-27 18:01:21 -05:00
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# https://linuxconfig.org/linux-lvm-logical-volume-manager
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2024-04-28 06:23:50 -05:00
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# apt-get install lvm2 # sudo dnf install lvm2
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2025-01-19 06:35:29 -06:00
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# fdisk -l
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# lsblk
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# lsblk -fe7
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# blkid
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# parted -l
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# parted /dev/sde u s p
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# df -hT
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# du -sh /home
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2024-05-17 03:39:20 -05:00
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# Check FREE SPACE # sfdisk --list-free /dev/vda # hwinfo --short --block # cat /proc/partitions #
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2025-01-19 06:35:29 -06:00
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# Check SPEED # sudo hdparm -t --direct /dev/nvme0n1p1
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2024-04-28 06:23:50 -05:00
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# pvs, vgs, lvs, pvdisplay, vgdisplay, lvdisplay
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# WIPE DESTROY DISK CONTENTS
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# shred -n 5 -vz /dev/sdb
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# scrub -p dod /dev/sdb
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2024-05-05 08:23:06 -05:00
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umount /dev/vgiso/iso && umount /dev/vgvm/vm && umount /dev/vgbackups/backups
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dd if=/dev/zero of=/dev/sdb bs=512 count=1
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2024-04-28 06:23:50 -05:00
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# PARTITION ON CMD LINE
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# cfdisk /dev/sdb
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fdisk /dev/sdb # then m, p, g, n, w, q
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2024-05-03 03:07:06 -05:00
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Device Start End Sectors Size Type
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2024-05-05 08:23:06 -05:00
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/dev/sdb1 419432448 838862847 419430400 200G Linux filesystem
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/dev/sdb2 838862848 1048578047 209715200 100G Linux filesystem
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/dev/sdb3 1048578048 3907028991 2858450944 1.3T Linux filesystem
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mkfs.ext4 -L VM /dev/sdb1
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mkfs.ext4 -L ISO /dev/sdb2
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2024-05-03 03:07:06 -05:00
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mkfs.ext4 -L BACKUPS /dev/sdb3
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2024-04-27 18:01:21 -05:00
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# CREATE LVM VOLUME(s)
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2024-04-28 06:23:50 -05:00
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pvcreate /dev/sdb1
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2024-05-05 08:23:06 -05:00
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vgcreate vgvm /dev/sdb1
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2024-04-28 06:23:50 -05:00
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lvcreate vgvm -l 100%FREE -n vm
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2024-05-05 08:23:06 -05:00
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pvcreate /dev/sdb2
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vgcreate vgiso /dev/sdb2
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lvcreate vgiso -l 100%FREE -n iso
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2024-04-28 06:23:50 -05:00
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pvcreate /dev/sdb3
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vgcreate vgbackups /dev/sdb3
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lvcreate vgbackups -l 100%FREE -n backups
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# lvcreate vgextra-vm -L 500G -n vg-vm vgextra
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# lvcreate vgextra-backups -L 900G -n vg-backups vgextra
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2024-04-27 18:01:21 -05:00
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lvdisplay
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2024-05-03 03:07:06 -05:00
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mkfs.ext4 -m 0 /dev/vgvm/vm
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2024-05-05 08:23:06 -05:00
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mkfs.ext4 -m 0 /dev/vgiso/iso
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2024-05-03 03:07:06 -05:00
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mkfs.ext4 -m 0 /dev/vgbackups/backups
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2024-05-05 08:23:06 -05:00
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mkdir /iso && mkdir /vm && mkdir /backups
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2024-04-27 18:01:21 -05:00
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vi /etc/fstab
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2024-05-03 03:07:06 -05:00
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/dev/vgiso/iso /iso ext4 defaults 0 0
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/dev/vgvm/vm /vm ext4 defaults 0 0
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/dev/vgbackups/backups /backups ext4 defaults 0 0
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2024-04-27 18:01:21 -05:00
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systemctl daemon-reload
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mount -a
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2024-05-17 03:39:20 -05:00
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# REMOVE LVM VOLUME # df -hT # vi /etc/fstab
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umount /dev/vgiso/iso && umount /dev/vgvm/vm && umount /dev/vgbackups/backups
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lvchange -an /dev/vgiso/iso && lvchange -an /dev/vgvm/vm && lvchange -an /dev/vgbackups/backups
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lvremove /dev/vgiso/iso && lvremove /dev/vgvm/vm && lvremove /dev/vgbackups/backups
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lvscan
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vgremove vgiso && vgremove vgvm && vgremove vgbackups
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pvremove /dev/sdd1 --force --force && pvremove /dev/sdd2 --force --force && pvremove /dev/sdd3 --force --force
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2024-04-27 18:01:21 -05:00
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2024-01-29 07:27:31 -06:00
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# RESIZE LVM AS ROOT: https://www.golinuxcloud.com/lvm-shrink-logical-volume/
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df -hT /home
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lsblk -f
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umount /home
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fsck -f /dev/mapper/pg--vg-home
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resize2fs /dev/mapper/pg--vg-home 5G
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lvreduce -r -L 5G /dev/mapper/pg--vg-home
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mount /dev/mapper/pg--vg-home /home
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# Extend the logical volume zeus-vg/var by 4G
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lvextend -L+4G /dev/mapper/zeus--vg-var
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# resize the ext4 filesystem in logical volume zeus-vg/var to the new volume size
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resize2fs /dev/mapper/zeus--vg-var
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2024-04-27 18:01:21 -05:00
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# lvextend --resizefs -l +100%FREE /dev/mapper/vg_debian-lv_root
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2024-01-29 07:27:31 -06:00
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#RESIZE ext4 - # unmount /home because an ext4 filesystem cannot be reduced while mounted
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2023-11-23 10:47:04 -06:00
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umount /home
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fsck -f /dev/mapper/zeus--vg-home
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resize2fs /dev/mapper/zeus--vg-home 50G
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# reduce the logical volume zeus-vg/home to 50G
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lvreduce -L50G /dev/mapper/zeus--vg-home
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# remount /home
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mount /home
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2023-11-29 03:55:28 -06:00
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2023-11-23 10:47:04 -06:00
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# MOUNT OTHER DRIVES
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cd/media
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mkdir 2TBSEAGATE
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mkdir 1TBNVME
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cd /etc
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mkdir backup
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cp /etc/fstab /etc/backup/fstab
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vi /etc/fstab
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/dev/sda1 /media/2TBSEAGATE ext4 defaults 0 2
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/dev/nvme1n1p1 /media/1TBNVME ext4 defaults 0 2
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2024-04-27 18:01:21 -05:00
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# CREATE NEW SNAPSHOT
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lvcreate /dev/mapper/<SOURCE VOLUMEGROUP NAME> -L 1G -s -n snapshot_name
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lvs
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# Mount a snapshot
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mount /dev/mapper/vg_extra-web_snapshot_20240624 /mnt/extra/snapshot
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# Restore a snapshot, Umount the original volume:
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umount /path/to/mounted/logical-volume
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lvconvert --merge /dev/mapper/snapshot_name
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# Deactivate/reactivate to fresh it:
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lvchange -an /dev/mapper/vg_extra-lv_web
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lvchange -ay /dev/mapper/vg_extra-lv_web
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