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raidstart



SYNOPSIS

       raidstart [options] <raiddevice>*

       raidstop [options] <raiddevice>*


DESCRIPTION

       RAID  devices are virtual devices created from two or more
       real block devices. This allows multiple disks to be  com­
       bined  into  a  single filesystem, possibly with automated
       backup and recovery. Linux RAID  devices  are  implemented
       through the md device driver.

       If  you're  using the /proc filesystem, /proc/mdstat gives
       you informations about md devices status.

       Currently, Linux supports linear md devices, RAID0 (strip­
       ing),  RAID1 (mirrroring), and RAID4 and RAID5. For infor­
       mation on the various levels of RAID, check out:

            http://ostenfeld.dk/~jakob/Software-RAID.HOWTO/

       for new releases of the RAID driver check out:

            ftp://ftp.fi.kernel.org/pub/linux/daemons/raid/alpha

       Avaible commands are :

       mkraid : configures (creates) md  (RAID)  devices  in  the
       kernel, banding multiple devices into one.

       raidstart : activates (starts) an existing 'persistent' md
       device

       raid0run : activates  old  nonpersistent  RAID0/LINEAR  md
       devices

       raidstop  :  turns  off  an  md  device,  and unconfigures
       (stops) it

       By default,  a  systems  RAID  configuration  is  kept  in
       /etc/raidtab, which can configure multiple RAID devices.

       All  of  these  tools work similiarly. If -a (or --all) is
       specified, the specified operation is performed on all  of
       the RAID devices mentioned in the configuration file. Oth­
       erwise, one or more RAID devices must be specified on  the
       command line. For example:

       raid0run -a

       Starts  all  of  the 'old' RAID0 RAID devices specified in
              Use   filename   as    the    configuration    file
              (/etc/raidtab is used by default).

       -h, --help
              Displays a short usage message, then exits.

       -V, --version
              Displays a short version message, then exits.


NOTES

       The  raidtools are derived from the md-tools and raidtools
       packages, which were originally written by  Marc  Zyngier,
       Miguel  de Icaza, Gadi Oxman, Bradley Ward Allen, and Ingo
       Molnar.


BUGS

       no known bugs.


SEE ALSO

       raidtab(5), raid0run(8), raidstop(8), mkraid(8)

                                                     raidstart(8)
  
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