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umount <device>
lvrename <vgname> <oldlvname> <newlvname> 

Remove a Physical Volume (PV) from a Volume Group (VG)

vgreduce VG_name PV_name

For example:

vgreduce ls1 /dev/sdb2

Troubleshooting

Messages

File descriptor * leaked on * invocation. Parent PID *

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Code to generate the message was added when it was alleged that LVM was leaking file descriptors.  The message shows that a file descriptor has already been leaked when an LVM program is called.

WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!

Can be safely ignored.

From https://wiki.gentoo.org/wiki/Talk:LVM#lvmetad_warning: "Normally lvmetad is not even enabled. Neither in initscripts nor in /etc/lvm/lvm.conf. But the lvm service has a useless rc_need on lvmetad. Remove it to get rid of those messages".

Recover a deleted logical volume (LV)

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