varyon

PURPOSE

     Makes an  external disk drive  and any minidisks  or file
     systems defined on it available for use.

SYNOPSIS
     varyon [-v] -d hdisk[num] [ hdisk[num] ... ][-q]

     varyon [-v] -m hd[num] [ hd[num] ... ][-c]

     varyon [-v] -p directory [ directory ... ][-c][-q]

DESCRIPTION

     The varyon  command adds an  external disk drive  and any
     minidisks or  file systems  residing on  the disk  to the
     existing AIX Operating System  hardware and minidisk con-
     figurations.   varyon runs  the fsck  command to  perform
     file system consistency checks and mounts the file system
     if the attributes vcheck=true and vmount=true are present
     in the corresponding stanza of the /etc/filesystems file.
     By default, varyon sends only generalized completion mes-
     sages  to standard  output, routing  more detailed  error
     messages to the file /etc/varyon.out.

FLAGS

     -c                   Does  not  perform file  consistency
                          checking.
     -d hdisknum . . .    Specifies the system device name for
                          an external disk drive, where num is
                          an integer from  0 to 33, inclusive.
                          The varyon command uses vrmconfig to
                          configure minidisks  residing on the
                          drive.  It  uses fsck to  check each
                          file  system  whose  stanza  in  the
                          /etc/filesystems  file contains  the
                          attribute  vcheck=true.   It  mounts
                          each file system that has the attri-
                          bute vmount=true.
     -q                   Operates  in  quiet mode;  does  not
                          prompt the user about minidisk names
                          or   rename   the   minidisks.    If
                          /etc/system   and   /etc/filesystems
                          contain information  about minidisks
                          on  the  external disk  drive,  this
                          option  adds  the minidisks  to  the
                          system   configuration   using   the

                          existing  minidisk  names and  mount
                          directory.

EXAMPLES

     1.  To configure an entire external disk drive:

           varyon  -d hdisk7

         This command configures a  disk drive, "hdisk7", into
         the  operating   system,  configures   any  minidisks
         defined  on the  disk,  and performs  fsck and  mount
         functions  on  file  systems   as  specified  by  the
         /etc/filesystems file.
     2.  To configure more than one external disk drive:

           varyon  -d  hdisk9 hdisk7 hdisk12

         This  command makes  disk drives  "hdisk9", "hdisk7",
         and "hdisk12" available for use.
     3.  To configure  an external drive without  without per-
         forming fsck functions:

           varyon  -c  -d  hdisk7  hdisk8  hdisk11

     4.  To  make the  external disk  drive available  without
         prompting  the user,  even if  minidisks are  already
         defined in the system configuration files:

           varyon -q -d hdisk3

         This command adds the minidisks to the system without
         prompting    the    user     if    /etc/system    and
         /etc/filesystems contain information about any of the
         minidisks on  the drive.   If information  exists the
         system  uses the  existing minidisk  names and  mount
         directory.

FILES

     /etc/filesystems    Descriptions   of    mountable   file
                         systems.
     /etc/system         Default system file.
     /etc/system.vary.bk System backup of /etc/system.
     /etc/varyon.out     Default error output file.

RELATED INFORMATION

     The   following  commands:    "fsck,  dfsck,"    "mount,"
     "varyoff" and "vrmconfig."

     The  discussion of  external drives  in Managing  the AIX
     Operating System.

     The system and filesystems  files in AIX Operating System
     Technical Reference.