Provided by: lvm2_2.03.02-2ubuntu6_amd64 bug

NAME

       pvscan - List all physical volumes

SYNOPSIS

       pvscan option_args
           [ option_args ]
           [ position_args ]

DESCRIPTION

       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.

USAGE

       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 ]
           [ 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 ]

OPTIONS

       -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.

       -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.)

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  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.)

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)

       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)