[PR]100~œI:債Č𓖂Ă悤I

RAID1ιۥ

RAID 1
2001ǯ227
ԡ
ĶOS RedHat Linux 6.2Jǡ
Kernel2.2.14-5.0



Ϥ
Ū
RAIDȤ


ϡɥǥμդ
ϡɥǥǧ

󥹥ȡRAID 1
ϣӥ󥹥ȡ
RAID 1

ưǧ
ΤȲꤹ

ºݤ˻Τ

ȥ֥륷塼ƥ
θ
ͤȤʤڡ




Ϥ

Ū

ΥɥȤŪϡRedHat6.2Jˤơ󥹥ȡRAID1ʥߥ顼󥰡ˤԤäƤޤ뤳ȤǤ
󥹥ȡRAIDȤळȤϡ󥹥ȡΤ٤ơˤƴñ˹ԤȤǤޤ
оݼԤϡLINUXν鿴ԤǤʻ䤬鿴ԤǤ

RAIDȤ

RAIDŪϡढꡢϰʲ̤Ǥ
ĤΥϡɥǥ򡢣Ĥ˷礷ƻȤ
inputoutput®Ԥ
ĤΥϡɥǥƱƤϿƤ⡢ñˤǤ褦ˤ롣
ΥɥȤǹԤέǤ

ܺ٤ϡhttp://www.linux.or.jp/JF/JFdocs/The-Software-RAID-HOWTO.txt򻲾ȤƲΥɥȤϡ桼⥢ä򤤤Ǥ


ϡɥǥμդ

ϡɥǥդޤ
ѤΤϡɾ롢IBMDTLAȤϡɥǥǤ

ϡɥǥΥ֥դ¦˽񤫤줿ѡ˽äơդĤƱ̤ΥϡɥǥξȤMasterפꤷơ֥뺹߸˥ϡɥǥդޤ

λॱ֥μդޤ礦

֥Υޥܡ¦ȤȿФˤ롢üκ߸Masterʼ͡ˡѤκ߸ǤˤΤϡSlaveˡѤκ߸Ǥʿ椬̵֥⤢ޤ

ǥХϰʲι¤򤷤Ƥޤ
ޥܡɢPrimaryʺǽΡ MasterעPrimary Slave
Secondary MasterעSecondary Slave

äơɤ餫MasterCD-ROMɥ饤ޤƤϡCD-ROMɥ饤֤򡢤줫ΡSlaveפ˺夨ɬפޤ

ϡɥǥǧ

äȥ֥륽åȤϡɥǥ˺ޤƤСǧΤΤϡưŪ˹Ԥ褦Ǥ

ϡɥǥǧƤ뤫ݤˤĤƤϡBIOS̤ǧ򤹤뤳ȤǤޤ

CompaqʤˤơBIOS̤ɽˤϡŸ줿ľΡCOMPAQפɽ줿̤ǡF10פ򲡤ޤ

StrageפΡIDE Devicesפ򤷤ޤ

ĤΥϡɥǥMasterפȤǧƤϡPrimary Dvice 0פȡSecondary Device 0פΡSizeϡɥǥ̤ɽޤ

ǧʤϡʲιܤǧƤߤƤ
ϡɥǥΥ֥륽åȡʥǡŸȤˡˤäȺޤƤ뤫
ѡʣȡ
CD-ROMκ߸򡢡Primary SlaveפSecondary Slaveפˤ߸ѤƤߤ롣


󥹥ȡRAID 1

ΥɥȤǤϡʲPartitionRAID 1 Ԥޤ
Ṳ̆ѹƲ

/bootʥ֡ȥѡƥ20MB
SWAP12MB
/ʥ롼ȥѡƥ28770MBʥϡɥǥλĤ̡


ϣӥ󥹥ȡ

OSΥ󥹥ȥ졼Ԥޤ
̤̾ꡢ򤷤ƤäƲ
Partationפɽ̤ˤʤä顢RAID򤷤ޤ

RAID 1

http://www.jp.redhat.com/support/manuals/RHL62/ref-guide/ch-raid.html#S2-RAID-APPROACHESˡ̤Υ꡼󥷥åȤäRAIDˤĤƤΡޤС

Partationβ̤ˤʤä顢ʲμǡRAID1ԤäƤ

֥ѡƥμפRAIDפˤǡͽ̤ȤˡhdahdcˣŤġƱ̤ǥѡƥڤ롣
Ʊ̤ǤʤС˥֡Ȥ뤴ȤRAID졢٤˽򤹤ȱܤˤʤޤRAID1¾塢ưʤƤʤΤƱˡ
RAIDǥκפꡢǶڤäǥ򣲤򤷤ơޥȥݥȤ򤷡RAIDǥ롣md0 = /bootmd1 = SWAPmd2 = /ȤƲ
줿RAIDǥ/dev/md0Τ褦ɽ롣

RAIDǥ̵Ǥ顢ή̤̾Υ󥹥ȡȤƱǤ

[ա]
/boot ѡƥϡTypeRAID1Ρhda1hdc1פˤʤ褦ˡפ򤷤ơRAIDǥƲ⤷hda6hdc6פΤ褦ˤʤäƤȡϡɥǥκǽΥ顢10248GB˰ʹߤˡbootѡƥ󤬰֤١bootˡLILOפɽ줺ˡLIפǻߤޤ롢Ȥ֤Ƥޤޤ
ΥͥСǤϡbootѡƥϡRAID1ˤǤʤפȤɥȤޤRedHat6.2JϡȤǤޤ


ưǧ

ȡRAIDǽƤ뤫ɤå򤷤ޤ

# cat /proc/mdstat

Personalities : [raid1]
read_ahead 1024 sectors
md0 : active raid1 hdc1[0] hda1[1] 20544 blocks [2/2] [UU]
md2 : active raid1 hdc5[1] hda5[0] 29460672 blocks [2/2] [UU] resync=3% finish=273.0min
md1 : active raid1 hdc6[1] hda6[0] 524544 blocks [2/2] [UU]

resync=3% finish=273.0minפʬϡraid۾򵯤ƺƹΤȤ̣餷Ǥ餯󥹥ȡ뤷ľʤΤǡۤ򤷤ƤʬʤΤǤϤʤȤ̣Ȼפޤ
ޤmd0 hdc1[0]ˤʤäƤޤä̵褦Ǥᤫ顢ξ㤬Υߥ졼ԤޤκȤˤƤ⡢ɤ餬[1]ǡɤ餬[0]ʤΤϡռɬפޤ

ΤȲꤹ

ŸȤ֤ǡϡɥǥ泰Ƥ顢Ÿޤ
ưˡBIOSconfigurationʴĶˤѤäѹSave¸ˤɤפȤ䤤碌뤫ȻפޤSaveޤ

ߤRAIDξ֤򸫤ޤ

# cat /proc/mdstat

Personalities : [raid1]
read_ahead 1024 sectors
md0 : active raid1 hdc1[0] hda1[1] 20544 blocks [2/1] [_U]
md2 : active raid1 hdc5[1] hda5[0] 29460672 blocks [2/1] [U_]
md1 : active raid1 hdc6[1] hda6[0] 524544 blocks [2/2] [U_]

[2/2]äȤ[2/1]ˡ[UU]äȤ[_U]ˤʤäƤޤ

ǡϡɥǥξ㤷֤򥷥ߥ졼ȤǤޤ

⤦ŸȤơϡɥǥդƤ顢Ÿޤ
configurationѹSaveƵưޤ
λäȥϡɥǥǧƤ뤫BIOSdzǧƤ顢κȤ˰ܤäƲ
ߤRAIDξ֤򸫤ޤ

# cat /proc/mdstat

Personalities : [raid1]
read_ahead 1024 sectors
md0 : active raid1 hdc1[0] hda1[1] 20544 blocks [2/1] [_U]
md2 : active raid1 hdc5[1] hda5[0] 29460672 blocks [2/1] [U_]
md1 : active raid1 hdc6[1] hda6[0] 524544 blocks [2/2] [U_]

֣ݭפƱǤĤޤꡢϡɥǥǧǤϡưŪRAIDǥˤϤʤޤ

ǧ줿ϡɥǥRAIDǥȤơǧޤ

# raidhotadd /dev/md0 /dev/hdc1

ޤСưŪǧϤޤޤ
⤷ޤʤϡϡɥǥBIOS顢뤫ǧƤߤƲ

ºݤ˻Τ

ºݤ˻ΤϡκȤԤˡԡΥϡɥǥΥѡƥƱˡѡƥڤľƤ
¾κȤϡƱǤ

ʾǡRAID1˴ؤȱѤˤĤơޤǤϤޤ뤳ȤǤȻפޤ

¾ˡäȤСˤ֣ͤȤʤڡפ򤴻Ȳ


ȥ֥륷塼ƥ

θ

֡¿äΤϡɥǥǧʤȤΤǤ
ϡξϡ˰ʲιܤΤΤ줫Ǥ
ϡɥǥΥ֥륽åȡʥǡŸȤˡˤäȺޤƤ뤫
줬֡¿äǤ
ѡʣȡ
CD-ROMκ߸򡢡Primary SlaveפSecondary Slaveפˤ߸ѤƤߤ롣


ͤȤʤڡ

The Software-RAID HOWTO
http://www.linux.or.jp/JF/JFdocs/The-Software-RAID-HOWTO.txt
JFɥȤΥڡǤ


Software IDE-RAID on LINUX
http://qubeley.b.kobe-u.ac.jp/Computers/RAID/
ĿͤΥڡǤ


Software RAID
http://www.tairon.co.jp/s-raid.html
ĿͤΥڡǤʤ껲ͤˤʤޤ
JFɥȤ񤷤ơޤ餷ʬμ񤤤Ƥޤ


RAID (Redundant Array of Independent Disks)
http://www.jp.redhat.com/support/manuals/RHL62/ref-guide/S2-RAID-APPROACHES
åɥϥåȼҤΥڡǤ
꡼åȤѤƤ١ʬ䤹Ǥ



ʾ2001ǯ228





[PR]b̐VԂ𖳗ھĒ:K钊IIŊȒPGET