Lvcreate

lvcreate commands creates a logical volume (LV)

Examples

• Create LV using all VG space available:

lvcreate -l 100%FREE -n MY_NEW_LV MY_VG_NAME

Logical volume "MY_NEW_LV" created.

WARNING: ext4 signature detected on /dev/MY_NEW_LV/MY_NEW_LV at offset 1080. Wipe it? [y/n]

Calculated size of logical volume is 0 extents. Needs to be larger.
vgs -o +vg_free_count,vg_extent_count

• Create a stripped LV for performance:

lvcreate --size 10G -i 2 -I 64 -n new_stripped_lv_for_performance MY_VG_0

--type striped is not optional as -i option is used)

-i 2. Number of stripes.

-I --stripesize

Related commands: mkfs.ext4

See also

• dmsetup ls and multipath -ll
• LVM: LVM errors LVM scan commands lkvmetad, Add a new disk

scan: pvscan vgscan

LVM: lvs lvmscan lvm fullreport lvmreport lvmconfig lvmdump lvmcheck lvm dumpconfig

Scan: pvs vgs lvs pvscan vgscan

PV: pvcreate pvremove pvscan pvremove pvscan pvs pvchange pvck pvdisplay pvresize

LV: lvdisplay lvcreate lvremove, lvresize, lvextend, lvreduce, lvrename

VG: vgdisplay,vgcreate,vgremove, vgextend, vgreduce, vgscan, vgchange, vgrename, vgcfgbackup, vgcfgrestore, vgimportclone, vgck

Check commands: pvck vgck

• ext4 e2fsck, fsck.ext4, superblock, inode, block size, mkfs.ext4 tune2fs, wipefs, resize2fs stat, extents, Review ext4 journalctl logs. Read-only file system, virt-resize, ACL
• mount and mkfs.ext4

http://man7.org/linux/man-pages/man8/lvcreate.8.html

https://stuff.mit.edu/afs/athena/project/rhel-doc/5/RHEL-5-manual/Cluster_Logical_Volume_Manager/LV_create.html