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PVSCAN(8)                   System Manager's Manual                  PVSCAN(8)

NAME
       pvscan -- List all physical volumes

SYNOPSIS
       pvscan option_args position_args
           [ option_args ]
           [ position_args ]

        -a|--activate y|n|ay
           --autoactivation String
           --cache
           --checkcomplete
           --commandprofile String
           --config String
        -d|--debug
           --devices PV
           --devicesfile String
           --driverloaded y|n
        -e|--exported
        -h|--help
           --ignorelockingfailure
           --journal String
           --listlvs
           --listvg
           --lockopt String
           --longhelp
        -j|--major Number
           --minor Number
           --nohints
           --nolocking
           --noudevsync
        -n|--novolumegroup
           --profile String
        -q|--quiet
           --reportformat basic|json|json_std
        -s|--short
        -t|--test
           --udevoutput
        -u|--uuid
        -v|--verbose
           --version
           --vgonline
        -y|--yes

DESCRIPTION
       When called without the --cache option, pvscan lists PVs on the system,
       like pvs(8) or pvdisplay(8).

       When --cache is used, pvscan updates runtime lvm state on  the  system,
       or with -aay performs autoactivation.

       pvscan --cache device

       If  device is present, lvm records that the PV on device is online.  If
       device is not present, lvm removes the online record for the PV.   pvs-
       can only reads the named device.

       pvscan --cache

       Updates the runtime state for all lvm devices.

       pvscan --cache -aay device

       Performs  the --cache steps for the device, then checks if the VG using
       the device is complete.  If so, LVs in the VG  are  autoactivated,  the
       same  as vgchange -aay vgname would do.  (A device name may be replaced
       with major and minor numbers.)

       pvscan --cache -aay

       Performs the --cache steps for all devices, then autoactivates any com-
       plete VGs.

       pvscan --cache --listvg|--listlvs device

       Performs  the --cache steps for the device, then prints the name of the
       VG using the device, or the names of LVs using the device.  --checkcom-
       plete is usually included to check if all PVs for the VG or LVs are on-
       line.  When this command is called by a udev rule, the output must con-
       form  to  udev  rule  specifications (see --udevoutput.)  The udev rule
       will use the results to perform autoactivation.

       Autoactivation of VGs or LVs can be enabled/disabled using vgchange  or
       lvchange   with   --setautoactivation   y|n,  or  by  adding  names  to
       lvm.conf(5) activation/auto_activation_volume_list

       See lvmautoactivation(7) for more information about how pvscan is  used
       for autoactivation.

USAGE
       Display PV information.

       pvscan
           [ -e|--exported ]
           [ -n|--novolumegroup ]
           [ -s|--short ]
           [ -u|--uuid ]
           [    --ignorelockingfailure ]
           [    --reportformat basic|json|json_std ]
           [ COMMON_OPTIONS ]

       --

       Record that a PV is online or offline.

       pvscan --cache
           [ -j|--major Number ]
           [    --ignorelockingfailure ]
           [    --reportformat basic|json|json_std ]
           [    --minor Number ]
           [    --noudevsync ]
           [ COMMON_OPTIONS ]
           [ String|PV ... ]

       --

       Record that a PV is online and autoactivate the VG if complete.

       pvscan --cache -a|--activate ay
           [ -j|--major Number ]
           [    --ignorelockingfailure ]
           [    --reportformat basic|json|json_std ]
           [    --minor Number ]
           [    --noudevsync ]
           [    --autoactivation String ]
           [ COMMON_OPTIONS ]
           [ String|PV ... ]

       --

       Record that a PV is online and list the VG using the PV.

       pvscan --cache --listvg PV
           [    --ignorelockingfailure ]
           [    --checkcomplete ]
           [    --vgonline ]
           [    --udevoutput ]
           [    --autoactivation String ]
           [ COMMON_OPTIONS ]

       --

       Record that a PV is online and list LVs using the PV.

       pvscan --cache --listlvs PV
           [    --ignorelockingfailure ]
           [    --checkcomplete ]
           [    --vgonline ]
           [ COMMON_OPTIONS ]

       --

       List LVs using the PV.

       pvscan --listlvs PV
           [ COMMON_OPTIONS ]

       --

       List the VG using the PV.

       pvscan --listvg PV
           [ COMMON_OPTIONS ]

       --

       Common options for lvm:
           [ -d|--debug ]
           [ -h|--help ]
           [ -q|--quiet ]
           [ -t|--test ]
           [ -v|--verbose ]
           [ -y|--yes ]
           [    --commandprofile String ]
           [    --config String ]
           [    --devices PV ]
           [    --devicesfile String ]
           [    --driverloaded y|n ]
           [    --journal String ]
           [    --lockopt String ]
           [    --longhelp ]
           [    --nohints ]
           [    --nolocking ]
           [    --profile String ]
           [    --version ]

OPTIONS
       -a|--activate y|n|ay
              Auto-activate  LVs  in  a VG when the PVs scanned have completed
              the VG.  (Only ay is applicable.)

       --autoactivation String
              Specify if autoactivation is being used from an event.  This al-
              lows  the  command  to apply settings that are specific to event
              activation, such as device scanning optimizations using  pvs_on-
              line files created by event-based pvscans.

       --cache
              Scan one or more devices and record that they are online.

       --checkcomplete
              Check  if  all  the  devices used by a VG or LV are present, and
              print "complete" or "incomplete" for each listed VG or LV.  This
              option  is used as a part of event-based autoactivation, so pvs-
              can will do nothing if this option is set and event_activation=0
              in the config settings.

       --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(5) set-
              tings.   The  String arg uses the same format as lvm.conf(5), or
              may use section/field syntax.  See lvm.conf(5) for more informa-
              tion 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).

       --devices PV
              Restricts the devices that are visible  and  accessible  to  the
              command.  Devices not listed will appear to be missing. This op-
              tion can be repeated, or accepts a comma separated list  of  de-
              vices. This overrides the devices file.

       --devicesfile String
              A file listing devices that LVM should use.  The file must exist
              in /etc/lvm/devices/ and is managed with the lvmdevices(8)  com-
              mand.   This  overrides  the lvm.conf(5) devices/devicesfile and
              devices/use_devicesfile settings.

       --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.

       --journal String
              Record information in the systemd journal.  This information  is
              in  addition  to information enabled by the lvm.conf log/journal
              setting.  command: record information about the  command.   out-
              put: record the default command output.  debug: record full com-
              mand debugging.

       --listlvs
              Print a list of LVs that use the device.

       --listvg
              Print the VG that uses the device.

       --lockopt String
              Used to pass options for special cases to  lvmlockd.   See  lvm-
              lockd(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.

       --nohints
              Do  not  use the hints file to locate devices for PVs. A command
              may read more devices to find PVs when hints are not  used.  The
              command will still perform standard hint file invalidation where
              appropriate.

       --nolocking
              Disable locking. Use with caution, concurrent commands may  pro-
              duce incorrect results.

       --noudevsync
              Disables udev synchronization. The process will not wait for no-
              tification from udev. It will continue irrespective of any  pos-
              sible  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 --ver-
              bose.  Repeat once to also  suppress  any  prompts  with  answer
              'no'.

       --reportformat basic|json|json_std
              Overrides  current  output  format  for reports which is defined
              globally by the  report/output_format  setting  in  lvm.conf(5).
              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. json_std produces report output in  JSON  format
              which  is  more  compliant with JSON standard.  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  un-
              usual  error messages in multi-stage operations if a tool relies
              on reading back metadata it believes has changed but hasn't.

       --udevoutput
              Command output is modified to be imported from a udev rule.

       -u|--uuid
              Show UUIDs in addition to device names.

       -v|--verbose ...
              Set verbose level. Repeat from 1 to 4 times to increase the  de-
              tail of messages sent to stdout and stderr.

       --version
              Display version information.

       --vgonline
              The  first command to see a complete VG will report it uniquely.
              Other commands to see the complete VG  will  report  it  differ-
              ently.

       -y|--yes
              Do  not  prompt for confirmation interactively but always assume
              the answer yes. Use with extreme caution.   (For  automatic  no,
              see -qq.)

VARIABLES
       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 ex-
              tents (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 con-
              tent.

       Size[UNIT]
              Size is an input number that accepts an  optional  unit.   Input
              units are always treated as base two values, regardless of capi-
              talization, e.g. 'k' and 'K' both refer to  1024.   The  default
              input unit is specified by letter, followed by |UNIT.  UNIT rep-
              resents other possible input units: b|B is bytes, s|S is sectors
              of  512  bytes,  k|K is KiB, m|M is MiB, g|G is GiB, t|T is TiB,
              p|P is PiB, e|E is EiB.  (This should not be confused  with  the
              output  control  --units, where capital letters mean multiple of
              1000.)

ENVIRONMENT VARIABLES
       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.

SEE ALSO
       lvm(8), lvm.conf(5), lvmconfig(8), lvmdevices(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), vgimportdevices(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), blkdeactivate(8), lvmdump(8),

       dmeventd(8), lvmpolld(8), lvmlockd(8), lvmlockctl(8), cmirrord(8),
       lvmdbusd(8), fsadm(8),

       lvmsystemid(7), lvmreport(7), lvmcache(7), lvmraid(7), lvmthin(7),
       lvmvdo(7), lvmautoactivation(7)

Red Hat, Inc.          LVM TOOLS 2.03.22(2) (2023-08-02)             PVSCAN(8)

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