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 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
/etc/raidtab. If only /dev/md1 should be started, the fol lowing 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)
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