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)