Command Section
GSTRIPE(8)              FreeBSD System Manager's Manual             GSTRIPE(8)

     gstripe - control utility for striped devices

     gstripe create [-v] [-s stripesize] name prov prov ...
     gstripe destroy [-fv] name ...
     gstripe label [-hv] [-s stripesize] name prov prov ...
     gstripe stop [-fv] name ...
     gstripe clear [-v] prov ...
     gstripe dump prov ...
     gstripe list
     gstripe status
     gstripe load
     gstripe unload

     The gstripe utility is used for setting up a stripe on two or more disks.
     The striped device can be configured using two different methods:
     ``manual'' or ``automatic''.  When using the ``manual'' method, no
     metadata are stored on the devices, so the striped device has to be
     configured by hand every time it is needed.  The ``automatic'' method
     uses on-disk metadata to detect devices.  Once devices are labeled, they
     will be automatically detected and configured.

     The first argument to gstripe indicates an action to be performed:

     create       Set up a striped device from the given devices with
                  specified name.  This is the ``manual'' method and the
                  stripe will not exist after a reboot (see DESCRIPTION
                  above).  The kernel module geom_stripe.ko will be loaded if
                  it is not loaded already.

     label        Set up a striped device from the given devices with the
                  specified name.  This is the ``automatic'' method, where
                  metadata are stored in every device's last sector.  The
                  kernel module geom_stripe.ko will be loaded if it is not
                  loaded already.

     stop         Turn off an existing striped device by its name.  This
                  command does not touch on-disk metadata!

     destroy      Same as stop.

     clear        Clear metadata on the given devices.

     dump         Dump metadata stored on the given devices.

     list         See geom(8).

     status       See geom(8).

     load         See geom(8).

     unload       See geom(8).

     Additional options:

     -f                   Force the removal of the specified striped device.

     -h                   Hardcode providers' names in metadata.

     -s stripesize        Specifies size of stripe block in bytes.  The
                          stripesize must be a multiple of the largest sector
                          size of all the providers.

     -v                   Be more verbose.

     The following sysctl(8) variables can be used to control the behavior of
     the STRIPE GEOM class.  The default value is shown next to each variable.

     kern.geom.stripe.debug: 0
             Debug level of the STRIPE GEOM class.  This can be set to a
             number between 0 and 3 inclusive.  If set to 0 minimal debug
             information is printed, and if set to 3 the maximum amount of
             debug information is printed. 0
             If set to a non-zero value enable ``fast mode'' instead of the
             normal ``economic mode''.  Compared to ``economic mode'', ``fast
             mode'' uses more memory, but it is much faster for smaller stripe
             sizes.  If enough memory cannot be allocated, STRIPE will fall
             back to ``economic mode''.

     kern.geom.stripe.maxmem: 13107200
             Maximum amount of memory that can be consumed by ``fast mode''
             (in bytes).  This sysctl(8) variable is read-only and can only be
             set as a tunable in loader.conf(5).

             A count of how many times ``fast mode'' has failed due to an
             insufficient amount of memory.  If this value is large, you
             should consider increasing the kern.geom.stripe.maxmem value.

     Exit status is 0 on success, and 1 if the command fails.

     The following example shows how to set up a striped device from four
     disks with a 128KB stripe size for automatic configuration, create a file
     system on it, and mount it:

           gstripe label -v -s 131072 data /dev/da0 /dev/da1 /dev/da2 /dev/da3
           newfs /dev/stripe/data
           mount /dev/stripe/data /mnt
           umount /mnt
           gstripe stop data
           gstripe unload

     The gstripe interleave is in number of bytes, unlike ccdconfig(8) which
     use the number of sectors.  A ccdconfig(8) ileave of `128' is 64 KB (128
     512B sectors).  The same stripe interleave would be specified as `65536'
     for gstripe.

     geom(4), loader.conf(5), ccdconfig(8), geom(8), gvinum(8), mount(8),
     newfs(8), sysctl(8), umount(8)

     The gstripe utility appeared in FreeBSD 5.3.

     Pawel Jakub Dawidek <[email protected]>

FreeBSD 11.1-RELEASE-p4          May 21, 2004          FreeBSD 11.1-RELEASE-p4
Command Section