NAME

       lvm2-activation-generator - generator for systemd units to activate LVM volumes on boot

SYNOPSIS

       /lib/systemd/system-generators/lvm2-activation-generator

DESCRIPTION

       The  lvm2-activation-generator  is  called  by systemd(1) on boot to generate systemd units at runtime to
       activate LVM Logical Volumes (LVs) when global/event_activation=0 is set in lvm.conf(5).  These units use
       vgchange -ay to activate LVs.

       If  event_activation=1,  the  lvm2-activation-generator  exits immediately without generating any systemd
       units, and LVM fully relies on event-based activation to activate LVs.   In  this  case,  event-generated
       pvscan --cache -aay commands activate LVs.

       These systemd units are generated by lvm2-activation-generator:

       lvm2-activation-early.service  is run before systemd's special cryptsetup.target to activate LVs that are
       not layered on top of encrypted devices.

       lvm2-activation.service is run after systemd's special cryptsetup.target to activate LVs that are layered
       on top of encrypted devices.

       lvm2-activation-net.service  is run after systemd's special remote-fs-pre.target to activate LVs that are
       layered on attached remote devices.

       Note that all the underlying LVM devices (Physical Volumes) need to be present when the service  is  run.
       If  the  there  are  any  devices  that  appear  to  the system later, LVs using these devices need to be
       activated directly by lvchange(8) or vgchange(8).

       The lvm2-activation-generator implements the Generators Specification as referenced in systemd(1).

SEE ALSO

       lvm.conf(5) vgchange(8) lvchange(8) pvscan(8) udev(7) systemd(1) systemd.target(5) systemd.special(7)