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 pvcreate(1M)                                                   pvcreate(1M)

 NAME    [Toc]    [Back]
      pvcreate - create physical volume for use in LVM volume group

 SYNOPSIS    [Toc]    [Back]
      /usr/sbin/pvcreate [-b] [-B] [-d soft_defects] [-s disk_size] [-f]
           [-t disk_type] pv_path

 DESCRIPTION    [Toc]    [Back]
      The pvcreate command initializes a direct access storage device (a raw
      disk device) for use as a physical volume in a volume group.

      If pv_path contains a file system and the -f option is not specified,
      pvcreate asks for confirmation.  The request for confirmation avoids
      accidentally deleting a file system.

      Furthermore, when the -f option is not specified, the operation is
      denied if pv_path already belongs to another volume group, or the
      pv_path refers to a disk device under the control of the VERITAS
      Volume Manager.

      After using pvcreate to create a physical volume, use vgcreate to add
      it to a new volume group or vgextend to add it to an existing volume
      group (see vgcreate(1M) and vgextend(1M)).

      Disks cannot be added to a volume group until they are properly
      initialized by pvcreate.

      pv_path can be made into a bootable disk by specifying the -B option,
      which reserves space on the physical volume for boot-related data.
      This is a prerequisite for creating root volumes on logical volumes.
      Refer to mkboot(1M) and lif(4) for more information.

    Options and Arguments    [Toc]    [Back]
      pvcreate recognizes the following options and arguments:

           pv_path             The character (raw) device path name of a
                               physical volume.

           -b                  Read from standard input the numbers that
                               correspond to the indexes of all known bad
                               blocks on the physical volume, pv_path, that
                               is being created.  Specify the indexes using
                               decimal, octal, or hexadecimal numbers in
                               standard C-language notation, with numbers
                               separated by newline, tab, or formfeed
                               characters.  If this option is not used,
                               pvcreate assumes that the physical volume
                               contains no bad blocks.

           -B                  Make a bootable physical volume (i.e., a
                               system disk).  On PA-RISC systems, pv_path

 Hewlett-Packard Company            - 1 -      HP-UX 11i Version 2: Sep 2004

 pvcreate(1M)                                                   pvcreate(1M)

                               should be the path name for the whole disk.
                               On Itanium(R)-based systems, pv_path should
                               be the path name for the disk section
                               containing the HP-UX partition.

           -d soft_defects     Specify the minimum number of bad blocks that
                               LVM should reserve in order to perform
                               software bad block relocation.  This number
                               can be no larger than 7039.  If not
                               specified, one block is reserved for each 8K
                               of data blocks.

           -s disk_size        Effective size of the physical volume to be
                               created, specified in number of physical

           -f                  Force the creation of a physical volume (thus
                               deleting any file system or volume manager
                               information present) without first requesting

                               Warning: The -f option should only be used as
                               a last resort to over write file system or
                               volume manager information that cannot
                               properly be removed using the commands
                               designed for that purpose.  When invoked with
                               -f, the command does minimal verification, so
                               care should be taken to assure that the disk
                               is not already in use prior to invoking the

           -t disk_type        Retrieve configuration information about the
                               physical volume from the file /etc/disktab.
                               disk_type specifies the device (for example,

                               The disk_type only needs to be specified when
                               pvcreate fails to get the size from the
                               underlying disk driver.  If the driver
                               successfully returns the size of the device,
                               disk_type is ignored.

    Note    [Toc]    [Back]
      A physical volume created under HP-UX 11.0 or later versions of HP-UX
      may have a different user data size than the same disk would have had
      under HP-UX 10.20 or earlier versions.

    Environment Variables
      LANG determines the language in which messages are displayed.

 Hewlett-Packard Company            - 2 -      HP-UX 11i Version 2: Sep 2004

 pvcreate(1M)                                                   pvcreate(1M)

      If LANG is not specified or is null, it defaults to "C" (see lang(5)).

      If any internationalization variable contains an invalid setting, all
      internationalization variables default to "C" (see environ(5)).

 EXAMPLES    [Toc]    [Back]
      Create a physical volume on raw device /dev/rdsk/c1t0d0, and force the
      creation without confirmation:

           pvcreate -f /dev/rdsk/c1t0d0

      Create a bootable physical volume for an Itanium-based system on raw
      device /dev/rdsk/c1t0d0s2, and force the creation without

           pvcreate -fB /dev/rdsk/c1t0d0s2

      Create a physical volume on raw device /dev/rdsk/c1t0d0, specifying
      that a bad blocks list (7, 13, 95, and 133) must be read from standard

           echo 7 13 95 133 | pvcreate -b /dev/rdsk/c1t0d0

 WARNINGS    [Toc]    [Back]
      Check the manufacturer's listing or run diagnostics testing for bad
      blocks on the device prior to creating a physical volume.  If bad
      blocks are present, use the -b option when creating the physical

    Itanium(R)-based System Warning    [Toc]    [Back]
      If you are using pvcreate on an Itanium-based system boot disk, ensure
      that the device file specifies the EFI partition number.  For example,

           pvcreate /dev/rdsk/c1t1d0s1

 FILES    [Toc]    [Back]
      /etc/disktab        Disk geometry and disk partition characteristics
                          for all disk devices on the system

 SEE ALSO    [Toc]    [Back]
      idisk(1M), mkboot(1M), vgcreate(1M), vgextend(1M), lif(4).

 Hewlett-Packard Company            - 3 -      HP-UX 11i Version 2: Sep 2004
[ Back ]
 Similar pages
Name OS Title
pvchange HP-UX change characteristics and access path of physical volume in LVM volume group
pvck HP-UX check or repair a physical volume in LVM volume group
lvcreate HP-UX create logical volume in LVM volume group
vgreduce HP-UX remove physical volumes from an LVM volume group
lvmpvg HP-UX LVM physical volume group information file
vgextend HP-UX extend an LVM volume group by adding physical volumes
vgchgid HP-UX modify the Volume Group ID (VGID) on a given set of physical devices
pvdisplay HP-UX display information about physical volumes within LVM volume group
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