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mdadm.8
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mdadm.8
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.\" -*- nroff -*-
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''' Copyright Neil Brown and others.
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''' This program is free software; you can redistribute it and/or modify
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''' it under the terms of the GNU General Public License as published by
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''' the Free Software Foundation; either version 2 of the License, or
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''' (at your option) any later version.
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''' See file COPYING in distribution for details.
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.\" Copyright Neil Brown and others.
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.\" This program is free software; you can redistribute it and/or modify
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.\" it under the terms of the GNU General Public License as published by
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.\" the Free Software Foundation; either version 2 of the License, or
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.\" (at your option) any later version.
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.\" See file COPYING in distribution for details.
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.TH MDADM 8 "" v2.6.4
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.SH NAME
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mdadm \- manage MD devices
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@ -50,41 +50,41 @@ each device is a path to one common physical storage device.
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is also not true RAID, and it only involves one device. It
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provides a layer over a true device that can be used to inject faults.
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'''.B mdadm
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'''is a program that can be used to create, manage, and monitor
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'''MD devices. As
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'''such it provides a similar set of functionality to the
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'''.B raidtools
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'''packages.
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'''The key differences between
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'''.B mdadm
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'''and
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'''.B raidtools
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'''are:
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'''.IP \(bu 4
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'''.B mdadm
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'''is a single program and not a collection of programs.
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'''.IP \(bu 4
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'''.B mdadm
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'''can perform (almost) all of its functions without having a
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'''configuration file and does not use one by default. Also
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'''.B mdadm
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'''helps with management of the configuration
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'''file.
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'''.IP \(bu 4
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'''.B mdadm
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'''can provide information about your arrays (through Query, Detail, and Examine)
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'''that
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'''.B raidtools
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'''cannot.
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'''.P
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'''.I mdadm
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'''does not use
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'''.IR /etc/raidtab ,
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'''the
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'''.B raidtools
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'''configuration file, at all. It has a different configuration file
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'''with a different format and a different purpose.
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.\".B mdadm
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.\"is a program that can be used to create, manage, and monitor
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.\"MD devices. As
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.\"such it provides a similar set of functionality to the
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.\".B raidtools
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.\"packages.
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.\"The key differences between
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.\".B mdadm
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.\"and
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.\".B raidtools
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.\"are:
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.\".IP \(bu 4
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.\".B mdadm
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.\"is a single program and not a collection of programs.
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.\".IP \(bu 4
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.\".B mdadm
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.\"can perform (almost) all of its functions without having a
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.\"configuration file and does not use one by default. Also
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.\".B mdadm
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.\"helps with management of the configuration
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.\"file.
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.\".IP \(bu 4
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.\".B mdadm
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.\"can provide information about your arrays (through Query, Detail, and Examine)
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.\"that
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.\".B raidtools
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.\"cannot.
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.\".P
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.\".I mdadm
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.\"does not use
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.\".IR /etc/raidtab ,
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.\"the
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.\".B raidtools
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.\"configuration file, at all. It has a different configuration file
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.\"with a different format and a different purpose.
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.SH MODES
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mdadm has several major modes of operation:
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@ -113,8 +113,8 @@ what you are doing.
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.TP
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.B Create
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Create a new array with per-device superblocks.
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'''It can progress
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'''in several step create-add-add-run or it can all happen with one command.
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.\"It can progress
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.\"in several step create-add-add-run or it can all happen with one command.
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.TP
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.B "Follow or Monitor"
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This is an 'everything else' mode that supports operations on active
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arrays, operations on component devices such as erasing old superblocks, and
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information gathering operations.
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'''This mode allows operations on independent devices such as examine MD
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'''superblocks, erasing old superblocks and stopping active arrays.
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.\"This mode allows operations on independent devices such as examine MD
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.\"superblocks, erasing old superblocks and stopping active arrays.
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.TP
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.B Auto-detect
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when creating a v0.90 array will silently override any
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.B \-\-homehost=
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setting.
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'''If the
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'''.B \-\-size
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'''option is given, it is not necessary to list any component-devices in this command.
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'''They can be added later, before a
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'''.B \-\-run.
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'''If no
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'''.B \-\-size
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'''is given, the apparent size of the smallest drive given is used.
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.\"If the
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.\".B \-\-size
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.\"option is given, it is not necessary to list any component-devices in this command.
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.\"They can be added later, before a
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.\".B \-\-run.
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.\"If no
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.\".B \-\-size
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.\"is given, the apparent size of the smallest drive given is used.
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The General Management options that are valid with
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.B \-\-create
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@ -2114,19 +2114,19 @@ http://unthought.net/Software\-RAID.HOWTO/
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.UR http://linux-raid.osdl.org/
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http://linux\-raid.osdl.org/
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.UE
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'''.PP
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'''for new releases of the RAID driver check out:
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'''
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'''.IP
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'''.UR ftp://ftp.kernel.org/pub/linux/kernel/people/mingo/raid-patches
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'''ftp://ftp.kernel.org/pub/linux/kernel/people/mingo/raid-patches
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'''.UE
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'''.PP
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'''or
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'''.IP
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'''.UR http://www.cse.unsw.edu.au/~neilb/patches/linux-stable/
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'''http://www.cse.unsw.edu.au/~neilb/patches/linux-stable/
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'''.UE
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.\".PP
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.\"for new releases of the RAID driver check out:
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.\"
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.\".IP
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.\".UR ftp://ftp.kernel.org/pub/linux/kernel/people/mingo/raid-patches
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.\"ftp://ftp.kernel.org/pub/linux/kernel/people/mingo/raid-patches
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.\".UE
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.\".PP
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.\"or
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.\".IP
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.\".UR http://www.cse.unsw.edu.au/~neilb/patches/linux-stable/
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.\"http://www.cse.unsw.edu.au/~neilb/patches/linux-stable/
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.\".UE
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.PP
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The latest version of
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.I mdadm
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