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 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  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 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:

       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 remov-
       able 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)