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6. Annexe B - Mise en oeuvre RAID 5 SCSI de référence

4 disques SCSI RAID 5

df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/md0              11753770   2146076   9000678  19% /
/dev/md1                 15739       885     14042   6% /boot
# --------------------------
fdisk -ul /dev/sda
Disk /dev/sda: 64 heads, 32 sectors, 4095 cylinders
Units = sectors of 1 * 512 bytes
Device Boot    Start       End    Blocks   Id  System
/dev/sda1            32     32767     16368   fd  Linux raid autodetect
/dev/sda2         32768    292863    130048    5  Extended
/dev/sda3        292864   8386559   4046848   fd  Linux raid autodetect
/dev/sda5         32800    260095    113648   82  Linux swap
/dev/sda6        260128    292863     16368   83  Linux native - test
# ------------------------
fdisk -ul /dev/sdb
Disk /dev/sdb: 64 heads, 32 sectors, 4095 cylinders
Units = sectors of 1 * 512 bytes
Device Boot    Start       End    Blocks   Id  System
/dev/sdb1            32     32767     16368   fd  Linux raid autodetect
/dev/sdb2         32768    292863    130048    5  Extended
/dev/sdb3        292864   8386559   4046848   fd  Linux raid autodetect
/dev/sdb5         32800    260095    113648   82  Linux swap
/dev/sdb6        260128    292863     16368   83  Linux native - test
# ------------------------
# fdisk -ul /dev/sdc
Disk /dev/sdc: 64 heads, 32 sectors, 4095 cylinders
Units = sectors of 1 * 512 bytes
Device Boot    Start       End    Blocks   Id  System
/dev/sdc2            32    292863    146416    5  Extended
/dev/sdc3        292864   8386559   4046848   fd  Linux raid autodetect
/dev/sdc5            64    260095    130016   83  Linux native - development
/dev/sdc6        260128    292863     16368   83  Linux native - test
# ------------------------
fdisk -ul /dev/sdd
Disk /dev/sdd: 64 heads, 32 sectors, 4095 cylinders
Units = sectors of 1 * 512 bytes
Device Boot    Start       End    Blocks   Id  System
/dev/sdd2            32    292863    146416    5  Extended
/dev/sdd3        292864   8386559   4046848   fd  Linux raid autodetect
/dev/sdd5            64    260095    130016   83  Linux native - development
/dev/sdd6        260128    292863     16368   83  Linux native - test
# --------------------------
# raidtab
#
raiddev /dev/md0
raid-level      5
nr-raid-disks   4
persistent-superblock 1
chunk-size      32
# Disque dédié à la reconstruction à chaud
nr-spare-disks  0
device          /dev/sda3
raid-disk       0
device          /dev/sdb3
raid-disk       1
device          /dev/sdc3
raid-disk       2
device          /dev/sdd3
raid-disk       3
# partition de démarrage
#
raiddev /dev/md1
raid-level      1
nr-raid-disks   2
persistent-superblock 1
chunk-size      32
# Disque dédié à la reconstruction à chaud
nr-spare-disks  0
device          /dev/sda1
raid-disk       0
device          /dev/sdb1
raid-disk       1
# --------------------------
# cat lilo.conf.sda
# SECTION GLOBALE
# Périphérique contenant /boot
disk=/dev/md0
# geometry
bios=0x80
sectors=32
heads=64
cylinders=4095
# dummy
partition=/dev/md1
# début du disque ci-dessus
start=32
boot=/dev/sda
map=/boot/map
install=/boot/boot.b
image=/boot/bzImage
root=/dev/md0
label=LinuxRaid
read-only
# ------------------------
# cat lilo.conf.sdb
# SECTION GLOBALE
# Périphérique contenant /boot
disk=/dev/md0
# geometry
bios=0x80
sectors=32
heads=64
cylinders=4095
# dummy
partition=/dev/md1
# début du disque ci-dessus
start=32
boot=/dev/sdb
map=/boot/map
install=/boot/boot.b
image=/boot/bzImage
root=/dev/md0
label=LinuxRaid
read-only


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