lvm
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This shows you the differences between two versions of the page.
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lvm [2016/08/16 16:47] k2patel [Add drive to LVM] |
lvm [2020/08/10 02:35] |
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| - | ====== LVM ====== | ||
| - | |||
| - | LVM you can increase / decrease size without any issue.\\ | ||
| - | But it is important you do it in proper steps. | ||
| - | |||
| - | ==== Steps to create LVM from drive ==== | ||
| - | <code bash> | ||
| - | pvcreate /dev/xvdf1 | ||
| - | pvdisplay /dev/xvdf1 | ||
| - | vgcreate -s 16M vg0 /dev/xvdf1 | ||
| - | vgdisplay /dev/xvdf | ||
| - | vgdisplay vg0 | ||
| - | lvcreate -n lv-vol001 vg0 | ||
| - | lvcreate --help | ||
| - | lvcreate -A n -L 24.5G -n lv-vol001 vg0 | ||
| - | mkfs.ext3 /dev/vg0/lv-vol001 | ||
| - | </code> | ||
| - | |||
| - | ==== Add drive to LVM ==== | ||
| - | <code bash> | ||
| - | fdisk /dev/xvdk ## Comment "Specify Type 8e by option t" | ||
| - | mkfs.ext3 /dev/xvdk1 | ||
| - | pvcreate /dev/xvdk1 | ||
| - | vgextend vg0 /dev/xvdk1 | ||
| - | lvextend -L 300G /dev/vg0/lv-vol001 | ||
| - | OR | ||
| - | lvextend -L+99.91G /dev/vg0/lv-vol001 | ||
| - | OR | ||
| - | lvextend -l +100%FREE /dev/vg0/lv-vol001 | ||
| - | resize2fs /dev/vg0/lv-vol001 | ||
| - | </code> | ||
| - | ==== Reducing Size ==== | ||
| - | |||
| - | <code bash> | ||
| - | umount /home | ||
| - | e2fsck -y /dev/mapper/VolGroup00-LogVol00 | ||
| - | resize2fs -f /dev/mapper/VolGroup00-LogVol00 1536M | ||
| - | lvreduce -L-512M /dev/mapper/VolGroup00-LogVol00 | ||
| - | mount /home | ||
| - | </code> | ||
| - | |||
| - | |||
| - | ==== Increasing Size ==== | ||
| - | <code bash> | ||
| - | umount /opt/ | ||
| - | e2fsck -y /dev/mapper/VolGroup00-LogVol02 | ||
| - | lvextend -L+512M /dev/mapper/VolGroup00-LogVol02 | ||
| - | resize2fs /dev/mapper/VolGroup00-LogVol02 | ||
| - | mount /opt | ||
| - | </code> | ||
| - | |||
| - | ==== Worked Example on Live System ==== | ||
| - | |||
| - | <code bash | history> | ||
| - | fdisk -l | ||
| - | fdisk /dev/sda ## Comment "Specify Type 8e by option t" | ||
| - | mkfs.ext3 /dev/sda1 | ||
| - | vgextend VolGroup00 /dev/sda1 | ||
| - | lvdisplay | ||
| - | vgdisplay | ||
| - | lvextend -l+1599 /dev/VolGroup00/LogVol00 | ||
| - | df -kh | ||
| - | vgdisplay | ||
| - | lvdisplay | ||
| - | resize2fs /dev/VolGroup00/LogVol00 | ||
| - | df -kh | ||
| - | </code> | ||
lvm.txt ยท Last modified: 2020/08/10 02:35 (external edit)
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