CiprianDorinCraciun/Notes/Public/Mdadm

Documentation

• http://raid.wiki.kernel.org/;

• TLDP:

  • http://tldp.org/HOWTO/Software-RAID-HOWTO.html;

  • http://tldp.org/HOWTO/Root-RAID-HOWTO.html;

  • http://tldp.org/HOWTO/Boot+Root+Raid+LILO.html;

• Misc:

  • http://linux-raid.osdl.org/index.php/Linux_Raid;

  • http://www.linuxhomenetworking.com/wiki/index.php/Quick_HOWTO_:_Ch26_:_Linux_Software_RAID;

  • http://www.linuxdevcenter.com/pub/a/linux/2002/12/05/RAID.html;

  • http://www.linuxfoundation.org/collaborate/workgroups/linux-raid/group;

  • http://www.linuxfoundation.org/collaborate/workgroups/linux-raid/raid_setup;

Recipies

RAID1 for backup

• creation:

  • mdadm \
        --create ./devices/md.dev \
        --level=raid1 \
        --chunk=2048 \
        --write-mostly \
        --write-behind=1024 \
        --bitmap=internal \
        --auto=md \
        --raid-devices=3 \
        --spare-devices=0 \
        --config=none \
        ./devices/block-0.dev missing missing \
        --verbose

• assembly:

  • mdadm --assemble ./devices/md.dev --run --auto=md ./devices/block-1.dev --verbose

• mirror addition:

  • mdadm --manage ./devices/md.dev --add ./devices/block-1.dev --verbose

• mirror re-addition:

  • mdadm --manage ./devices/md.dev --re-add ./devices/block-1.dev --verbose

• mirror removal:

  • mdadm --manage ./devices/md.dev --fail ./devices/block-1.dev --verbose
    mdadm --manage ./devices/md.dev --remove ./devices/block-1.dev --verbose