8:raidstart
From Linux Man Pages
raidstart, raidstop, - command set to manage md devices.
Contents |
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 informa-
tions 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 mentioned
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.
RELATED
raidtab(5), raid0run(8), raidstop(8), mkraid(8)