mirror of
git://sourceware.org/git/lvm2.git
synced 2024-10-26 17:25:10 +03:00
60 lines
1.8 KiB
Plaintext
60 lines
1.8 KiB
Plaintext
When called without the --cache option, pvscan lists PVs on the system,
|
|
like
|
|
.BR pvs (8)
|
|
or
|
|
.BR pvdisplay (8).
|
|
.P
|
|
When the --cache and -aay options are used, pvscan records which PVs are
|
|
available on the system, and activates LVs in completed VGs. A VG is
|
|
complete when pvscan sees that the final PV in the VG has appeared. This
|
|
is used by event-based system startup (systemd, udev) to activate LVs.
|
|
.P
|
|
The four main variations of this are:
|
|
.P
|
|
.B pvscan --cache
|
|
.I device
|
|
.P
|
|
If device is present, lvm adds a record that the PV on device is online.
|
|
If device is not present, lvm removes the online record for the PV.
|
|
In most cases, the pvscan will only read the named devices.
|
|
.P
|
|
.B pvscan --cache -aay
|
|
.IR device ...
|
|
.P
|
|
This begins by performing the same steps as above. Afterward, if the VG
|
|
for the specified PV is complete, then pvscan will activate LVs in the VG
|
|
(the same as vgchange -aay vgname would do.)
|
|
.P
|
|
.B pvscan --cache
|
|
.P
|
|
This first clears all existing PV online records, then scans all devices
|
|
on the system, adding PV online records for any PVs that are found.
|
|
.P
|
|
.B pvscan --cache -aay
|
|
.P
|
|
This begins by performing the same steps as pvscan --cache. Afterward, it
|
|
activates LVs in any complete VGs.
|
|
.P
|
|
To prevent devices from being scanned by pvscan --cache, add them
|
|
to
|
|
.BR lvm.conf (5)
|
|
.B devices/global_filter.
|
|
For more information, see:
|
|
.br
|
|
.B lvmconfig --withcomments devices/global_filter
|
|
.P
|
|
Auto-activation of VGs or LVs can be enabled/disabled using:
|
|
.br
|
|
.BR lvm.conf (5)
|
|
.B activation/auto_activation_volume_list
|
|
.P
|
|
For more information, see:
|
|
.br
|
|
.B lvmconfig --withcomments activation/auto_activation_volume_list
|
|
.P
|
|
To disable auto-activation, explicitly set this list to an empty list,
|
|
i.e. auto_activation_volume_list = [ ].
|
|
.P
|
|
When this setting is undefined (e.g. commented), then all LVs are
|
|
auto-activated.
|