FreeBSD/gmirror

gmirror †

# 前提 GPTで4分割パーテーション
# 1.freebsd-boot
# 2.freebsd-ufs
# 3.freebsd-swap
# 4.freebsd-ufs（デュアルブート用）

gpart backup ada0 > ada0.gpt
gpart restore -F /dev/ada1 < ada0.gpt
gpart show

gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada1

kldload geom_mirror
gmirror label -vb round-robin p1 /dev/ada0p1
gmirror label -vb round-robin p4 /dev/ada0p4

gpart set -a bootonce -i 4 ada0 # ミラー設定のため起動パーテーションを一時変更
mount /dev/mirror/p4 /mnt
echo 'geom_mirror_load="YES"' >> /mnt/boot/loader.conf
cp /mnt/etc/fstab /mnt/etc/fstab.org
sed s/'ada0'/'mirror\/'/ < /mnt/etc/fstab.org > /mnt/etc/fstab
shutdown -r now

gmirror label -vb round-robin p2 /dev/ada0p2
mount /dev/mirror/p2 /mnt
echo 'geom_mirror_load="YES"' >> /mnt/boot/loader.conf
cp /mnt/etc/fstab /mnt/etc/fstab.org
sed s/'ada0'/'mirror\/'/ < /mnt/etc/fstab.org > /mnt/etc/fstab
shutdown -r now

gmirror insert p1 /dev/ada1p1
gmirror insert p2 /dev/ada1p2
gmirror insert p4 /dev/ada1p4

gmirror status

kldload geom_stripe.ko
gstripe label -v p3 ada0p3 ada1p3
gstripe status

echo 'geom_stripe_load="YES"' >> /boot/loader.conf
echo 'kern.geom.label.gptid.enable=0' >> /boot/loader.conf # 意味不明 dmesgのエラー回避
echo '/dev/stripe/p3  none            swap    sw      0       0' >> /etc/fstab

echo 'daily_status_gmirror_enable="YES"' >> /etc/periodic.conf
echo 'daily_status_gstripe_enable="YES"' >> /etc/periodic.conf

解除方法

gmirror deactivate -v p2 ada0p2 ada1p2

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