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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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