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NAME | SYNOPSIS | DESCRIPTION | USAGE | OPTIONS | VARIABLES | ENVIRONMENT VARIABLES | SEE ALSO | COLOPHON |
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PVSCAN(8) System Manager's Manual PVSCAN(8)
pvscan - List all physical volumes
pvscan option_args
[ option_args ]
[ position_args ]
When called without the --cache option, pvscan lists PVs on the
system, like pvs(8) or pvdisplay(8).
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.
The four main variations of this are:
pvscan --cache device
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.
pvscan --cache -aay device...
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.)
pvscan --cache
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.
pvscan --cache -aay
This begins by performing the same steps as pvscan --cache.
Afterward, it activates LVs in any complete VGs.
To prevent devices from being scanned by pvscan --cache, add them
to lvm.conf(5) devices/global_filter. For more information, see:
lvmconfig --withcomments devices/global_filter
Auto-activation of VGs or LVs can be enabled/disabled using:
lvm.conf(5) activation/auto_activation_volume_list
For more information, see:
lvmconfig --withcomments activation/auto_activation_volume_list
To disable auto-activation, explicitly set this list to an empty
list, i.e. auto_activation_volume_list = [ ].
When this setting is undefined (e.g. commented), then all LVs are
auto-activated.
Display PV information.
pvscan
[ -e|--exported ]
[ -n|--novolumegroup ]
[ -s|--short ]
[ -u|--uuid ]
[ COMMON_OPTIONS ]
Autoactivate a VG when all PVs are online.
pvscan --cache
[ -a|--activate ay ]
[ -j|--major Number ]
[ --minor Number ]
[ --noudevsync ]
[ COMMON_OPTIONS ]
[ String|PV ... ]
Common options for command:
[ --ignorelockingfailure ]
[ --reportformat basic|json ]
Common options for lvm:
[ -d|--debug ]
[ -h|--help ]
[ -q|--quiet ]
[ -t|--test ]
[ -v|--verbose ]
[ -y|--yes ]
[ --commandprofile String ]
[ --config String ]
[ --driverloaded y|n ]
[ --lockopt String ]
[ --longhelp ]
[ --nolocking ]
[ --profile String ]
[ --version ]
-a|--activate y|n|ay
Auto-activate LVs in a VG when the PVs scanned have
completed the VG. (Only ay is applicable.)
--cache
Scan one or more devices and record that they are online.
--commandprofile String
The command profile to use for command configuration. See
lvm.conf(5) for more information about profiles.
--config String
Config settings for the command. These override lvm.conf
settings. The String arg uses the same format as
lvm.conf, or may use section/field syntax. See
lvm.conf(5) for more information about config.
-d|--debug ...
Set debug level. Repeat from 1 to 6 times to increase the
detail of messages sent to the log file and/or syslog (if
configured).
--driverloaded y|n
If set to no, the command will not attempt to use device-
mapper. For testing and debugging.
-e|--exported
Only show PVs belonging to exported VGs.
-h|--help
Display help text.
--ignorelockingfailure
Allows a command to continue with read-only metadata
operations after locking failures.
--lockopt String
Used to pass options for special cases to lvmlockd. See
lvmlockd(8) for more information.
--longhelp
Display long help text.
-j|--major Number
The major number of a device.
--minor Number
The minor number of a device.
--nolocking
Disable locking.
--noudevsync
Disables udev synchronisation. The process will not wait
for notification from udev. It will continue irrespective
of any possible udev processing in the background. Only
use this if udev is not running or has rules that ignore
the devices LVM creates.
-n|--novolumegroup
Only show PVs not belonging to any VG.
--profile String
An alias for --commandprofile or --metadataprofile,
depending on the command.
-q|--quiet ...
Suppress output and log messages. Overrides --debug and
--verbose. Repeat once to also suppress any prompts with
answer 'no'.
--reportformat basic|json
Overrides current output format for reports which is
defined globally by the report/output_format setting in
lvm.conf. basic is the original format with columns and
rows. If there is more than one report per command, each
report is prefixed with the report name for
identification. json produces report output in JSON
format. See lvmreport(7) for more information.
-s|--short
Short listing format.
-t|--test
Run in test mode. Commands will not update metadata. This
is implemented by disabling all metadata writing but
nevertheless returning success to the calling function.
This may lead to unusual error messages in multi-stage
operations if a tool relies on reading back metadata it
believes has changed but hasn't.
-u|--uuid
Show UUIDs in addition to device names.
-v|--verbose ...
Set verbose level. Repeat from 1 to 4 times to increase
the detail of messages sent to stdout and stderr.
--version
Display version information.
-y|--yes
Do not prompt for confirmation interactively but always
assume the answer yes. Use with extreme caution. (For
automatic no, see -qq.)
PV
Physical Volume name, a device path under /dev. For
commands managing physical extents, a PV positional arg
generally accepts a suffix indicating a range (or multiple
ranges) of physical extents (PEs). When the first PE is
omitted, it defaults to the start of the device, and when
the last PE is omitted it defaults to end. Start and end
range (inclusive): PV[:PE-PE]... Start and length range
(counting from 0): PV[:PE+PE]...
String
See the option description for information about the
string content.
Size[UNIT]
Size is an input number that accepts an optional unit.
Input units are always treated as base two values,
regardless of capitalization, e.g. 'k' and 'K' both refer
to 1024. The default input unit is specified by letter,
followed by |UNIT. UNIT represents other possible input
units: bBsSkKmMgGtTpPeE. b|B is bytes, s|S is sectors of
512 bytes, k|K is kilobytes, m|M is megabytes, g|G is
gigabytes, t|T is terabytes, p|P is petabytes, e|E is
exabytes. (This should not be confused with the output
control --units, where capital letters mean multiple of
1000.)
See lvm(8) for information about environment variables used by
lvm. For example, LVM_VG_NAME can generally be substituted for a
required VG parameter.
lvm(8) lvm.conf(5) lvmconfig(8)
pvchange(8) pvck(8) pvcreate(8) pvdisplay(8) pvmove(8)
pvremove(8) pvresize(8) pvs(8) pvscan(8)
vgcfgbackup(8) vgcfgrestore(8) vgchange(8) vgck(8) vgcreate(8)
vgconvert(8) vgdisplay(8) vgexport(8) vgextend(8) vgimport(8)
vgimportclone(8) vgmerge(8) vgmknodes(8) vgreduce(8) vgremove(8)
vgrename(8) vgs(8) vgscan(8) vgsplit(8)
lvcreate(8) lvchange(8) lvconvert(8) lvdisplay(8) lvextend(8)
lvreduce(8) lvremove(8) lvrename(8) lvresize(8) lvs(8) lvscan(8)
lvm-fullreport(8) lvm-lvpoll(8) lvm2-activation-generator(8)
blkdeactivate(8) lvmdump(8)
dmeventd(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) cmirrord(8)
lvmdbusd(8)
lvmsystemid(7) lvmreport(7) lvmraid(7) lvmthin(7) lvmcache(7)
This page is part of the lvm2 (Logical Volume Manager 2) project.
Information about the project can be found at
⟨http://www.sourceware.org/lvm2/⟩. If you have a bug report for
this manual page, see ⟨https://github.com/lvmteam/lvm2/issues⟩.
This page was obtained from the tarball
https://github.com/lvmteam/lvm2/archive/v2_03_10.tar.gz fetched
from ⟨https://github.com/lvmteam/lvm2/releases⟩ on 2020-12-18.
If you discover any rendering problems in this HTML version of
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source for the page, or you have corrections or improvements to
the information in this COLOPHON (which is not part of the
original manual page), send a mail to man-pages@man7.org
Red Hat, Inc. LVM TOOLS 2.03.10(2) (2020-08-09) PVSCAN(8)
Pages that refer to this page: lvchange(8), lvconvert(8), lvcreate(8), lvdisplay(8), lvextend(8), lvm2-activation-generator(8), lvm(8), lvmconfig(8), lvmdiskscan(8), lvm-fullreport(8), lvm-lvpoll(8), lvreduce(8), lvremove(8), lvrename(8), lvresize(8), lvs(8), lvscan(8), pvchange(8), pvck(8), pvcreate(8), pvdisplay(8), pvmove(8), pvremove(8), pvresize(8), pvs(8), pvscan(8), vgcfgbackup(8), vgcfgrestore(8), vgchange(8), vgck(8), vgconvert(8), vgcreate(8), vgdisplay(8), vgexport(8), vgextend(8), vgimport(8), vgimportclone(8), vgmerge(8), vgmknodes(8), vgreduce(8), vgremove(8), vgrename(8), vgs(8), vgscan(8), vgsplit(8)
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