raidstart, raidstop, - command set to manage md devices.
raidstart [options] <raiddevice>*
raidstop [options] <raiddevice>*
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
Currently, Linux supports linear md devices, RAID0 (striping), RAID1 (mirrroring), and
RAID4 and RAID5. For information on the various levels of RAID, check out:
for new releases of the RAID driver check out:
Avaible commands are :
mkraid : configures (creates) md (RAID) devices in the kernel, banding multiple devices
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 mul-
tiple 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. Otherwise,
one or more RAID devices must be specified on the command line. For example:
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:
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).
Displays a short usage message, then exits.
Displays a short version message, then exits.
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.
no known bugs.
raidtab(5), raid0run(8), raidstop(8), mkraid(8)