🖥️lvcreate

➡️This is a command-line reference manual for commands and command combinations that you don’t use often enough to remember it. This cheatsheet explains the lvcreate command with important options and switches using examples.

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# lvcreate

# Creates a logical volume in an existing volume group.
# A volume group is a collection of logical and physical volumes.

# Create a logical volume of 10 gigabytes in the volume group vg1:
lvcreate -L 10G vg1

# Create a 1500 megabyte linear logical volume named mylv in the volume group vg1:
lvcreate -L 1500 -n mylv vg1

# Create a logical volume called mylv that uses 60% of the total space in volume group vg1:
lvcreate -l 60%VG -n mylv vg1

# Create a logical volume called mylv that uses all of the unallocated space in the volume group vg1:
lvcreate -l 100%FREE -n mylv vg1

# Create a snapshot (lvsnap) from a logical volume (/dev/vgA/lv1);
# snapshot size = 10G (total size of the changes)
lvcreate -L 10G -s -n lvsnap /dev/vgA/lv1

# Clone LVM volume: test => testCopy
lvconvert --type mirror --alloc anywhere -m1 /dev/mylv/test
lvs -a -o +devices | egrep "LV|test"
# After Cpy%Sync is 100% finished:
lvconvert --splitmirrors 1 --name testCopy /dev/rootvg/test

Cheatsheets are an excellent complement to other information sources like Linux man-pages, Linux help, or How-To’s and tutorials, as they provide compact and easily accessible information. While man-pages and detailed tutorials often contain comprehensive explanations and extensive guides, cheatsheets summarize the most important options forthe command lvcreate in a clear format. This allows users to quickly access the needed information for lvcreate without having to sift through lengthy texts. Especially in stressful situations or for recurring tasks, cheatsheets for lvcreate are a valuable resource to work efficiently and purposefully.

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