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File Formats                                            vfstab(4)



NAME
     vfstab - table of file system defaults

DESCRIPTION
     The file /etc/vfstab describes defaults for each  file  sys-
     tem. The information is stored in a table with the following
     column headings:

     device       device       mount      FS      fsck    mount      mount
     to mount     to fsck      point      type    pass    at boot    options

     The fields in the table are  space-separated  and  show  the
     resource  name  (device  to  mount),  the raw device to fsck
     (device to fsck), the default mount directory (mount point),
     the  name of the file system type (FS type), the number used
     by fsck to decide whether to check the file system automati-
     cally (fsck pass), whether the file system should be mounted
     automatically by mountall (mount at boot), and the file sys-
     tem  mount  options  (mount  options). (See respective mount
     file system man page below in SEE ALSO for mount options.) A
     '-'  is  used  to  indicate no entry in a field. This may be
     used when a field does  not  apply  to  the  resource  being
     mounted.

     The getvfsent(3C) family of routines is  used  to  read  and
     write to /etc/vfstab.

     /etc/vfstab can be used to specify swap areas. An  entry  so
     specified, (which can be a file or a device), will automati-
     cally be added as a swap area by  the  /sbin/swapadd  script
     when  the  system boots. To specify a swap area, the device-
     to-mount field contains the name of the swap file or device,
     the  FS-type  is "swap", mount-at-boot is "no" and all other
     fields have no entry.

EXAMPLES
     The following are vfstab entries  for  various  file  system
     types supported in the Solaris operating environment.

     Example 1: NFS and UFS Mounts

     The following entry invokes NFS to automatically  mount  the
     directory  /usr/local of the server example1 on the client's
     /usr/local directory with read-only permission:

     example1:/usr/local - /usr/local nfs - yes ro

     The following example  assumes  a  small  departmental  mail
     setup,  in  which  clients  mount  /var/mail  from  a server
     mailsvr.  The  following  entry  would  be  listed  in  each
     client's vfstab:




SunOS 5.9           Last change: 21 Jun 2001                    1






File Formats                                            vfstab(4)



     mailsvr:/var/mail - /var/mail nfs - yes intr,bg

     The following is an example for a UFS file system  in  which
     logging is enabled:

     /dev/dsk/c2t10d0s0 /dev/rdsk/c2t10d0s0 /export/local ufs 3 yes logging

     See mount_nfs(1M) for a description of NFS mount options and
     mount_ufs(1M) for a description of UFS options.

     Example 2: pcfs Mounts

     The following example mounts a pcfs file system on  a  fixed
     hard disk on an x86 machine:

     /dev/dsk/c1t2d0p0:c - /win98 pcfs - yes -

     The example below mounts a Jaz drive  on  a  SPARC  machine.
     Normally,  the  volume management daemon (see vold(1M)) han-
     dles mounting of removable media, obviating a vfstab  entry.
     If  you  choose  to specify a device that supports removable
     media in vfstab, be sure to set the mount-at-boot  field  to
     no,  as  below.  Such  an entry presumes you are not running
     vold.

     /dev/dsk/c1t2d0s2:c - /jaz pcfs - no -

     For removable media on a SPARC machine, the  convention  for
     the  slice  portion of the disk identifier is to specify s2,
     which stands for the entire medium.

     For pcfs file systems on x86 machines, note  that  the  disk
     identifier  uses  a  p  (p0)  and a logical drive (c, in the
     /win98  example  above)  for  a  pcfs  logical  drive.   See
     mount_pcfs(1M)  for  syntax  for pcfs logical drives and for
     pcfs-specific mount options.

     Example 3: CacheFS Mount

     Below is an example for a CacheFS file  system.  Because  of
     the  length  of  this entry and the fact that vfstab entries
     cannot be continued to a second line, the vfstab fields  are
     presented  here in a vertical format. In re-creating such an
     entry in your own vfstab, you  would  enter  values  as  you
     would for any vfstab entry, on a single line.

     device to mount:  svr1:/export/abc
     device to fsck:  /usr/abc
     mount point:  /opt/cache
     FS type:  cachefs
     fsck pass:  7
     mount at boot:  yes



SunOS 5.9           Last change: 21 Jun 2001                    2






File Formats                                            vfstab(4)



     mount options:
     local-access,bg,nosuid,demandconst,backfstype=nfs,cachedir=/opt/cache

     See mount_cachefs(1M) for CacheFS-specific mount options.

     Example 4: Loopback File System Mount

     The following is an example of mounting  a  loopback  (lofs)
     file system:

     /export/test - /opt/test lofs - yes -

     See lofs(7FS) for an overview of the loopback file system.

SEE ALSO
     fsck(1M),  mount(1M),   mount_cachefs(1M),   mount_hsfs(1M),
     mount_nfs(1M),   mount_tmpfs(1M),  mount_ufs(1M),  swap(1M),
     getvfsent(3C)

     System Administration Guide: Basic Administration



































SunOS 5.9           Last change: 21 Jun 2001                    3