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LVM2-ACTIVATION-GENERATOR(8)                      LVM2-ACTIVATION-GENERATOR(8)
NAME
       lvm2-activation-generator - generator for systemd units to activate LVM
       volumes on boot
SYNOPSIS
       /usr/lib/systemd/system-generators/lvm2-activation-generator
DESCRIPTION
       The lvm2-activation-generator is called by systemd(1) on boot to gener-
       ate 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 -aay 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  crypt-
       setup.target  to  activate LVs that are not layered on top of encrypted
       devices.
       lvm2-activation.service is run after systemd's special  cryptsetup.tar-
       get 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 acti-
       vated 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),
       systemd(1), systemd.target(5), systemd.special(7),
       udev(7)
Red Hat, Inc        LVM TOOLS 2.03.14(2)-RHEL8 (20LVM2-ACTIVATION-GENERATOR(8)