lvm2-activation-generator(8)

LVM2-ACTIVATION-GENERATOR(8)                      LVM2-ACTIVATION-GENERATOR(8)

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 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 -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  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  de-
       vices.

       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  ap-
       pear  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) sys-
       temd.target(5) systemd.special(7)

Red Hat, Inc           LVM TOOLS 2.03.07(2) (2019-LVM2-ACTIVATION-GENERATOR(8)