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vfstab(4)			 File Formats			     vfstab(4)

NAME
       vfstab -	table of file system defaults

DESCRIPTION
       The  file  /etc/vfstab describes	defaults for each file system. The in-
       formation 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 sys-
       tem automatically (fsck	pass),	whether	 the  file  system  should  be
       mounted	automatically by mountall (mount at boot), and the file	system
       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 automatically 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 sup-
       ported 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:

       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)) handles 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
       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 5.10			  21 Jun 2001			     vfstab(4)

NAME | DESCRIPTION | EXAMPLES | SEE ALSO

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