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vgscan - scan all disks for volume groups and rebuild caches
vgscan [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--mknodes]
vgscan scans all SCSI, (E)IDE disks, multiple devices and a bunch of
other disk devices in the system looking for LVM physical volumes and
volume groups. Define a filter in lvm.conf(5) to restrict the scan to
avoid a CD ROM, for example.
In LVM2, vgscans take place automatically; but you might still need to
run one explicitly after changing hardware.
See lvm for common options.
Also checks the LVM special files in /dev that are needed for
active logical volumes and creates any missing ones and removes
lvm(8), vgcreate(8), vgchange(8)
Sistina Software UK LVM TOOLS 2.02.44-cvs (02-17-09) VGSCAN(8)