Pros and cons of a Journaled file System Post: 302593997

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raidstop

raidstart(8)						      System Manager's Manual						      raidstart(8)

NAME

       raidstart, raidstop, - command set to manage md devices.

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 combined 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 (striping), RAID1 (mirrroring), and RAID4 and RAID5. For information on the various lev-
       els 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 men-
       tioned in the configuration file. Otherwise, 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 /etc/raidtab. If only /dev/md1 should be started, the following command	should	be
       used instead:

       raidstart /dev/md1

OPTIONS

       -a, --all
	      Apply the command to all of the configurations specified in the config file.

       -c, --configfile filename
	      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)