노후 디스크교체/업그레이드 - RHEL4 > 에필로그

노화된 하드디스크라 백업중에 망가질까 조심스러웠다.

오래된 장비는 백업하다가 디스크가 나가거나 레이드에 오류가 발생하는 경우가 있어서다.

설치된 RHEL 4.8(kernel 2.6.9-89)의 부팅 CD를 구할 수가 없어서 파티션 백업과 복구에 SystemRescueCD를 사용했다.

1. 파티션 정보 파악 *마운트 후 fstab 파일 내용 확인, df를 실행

LABEL=/ / ext3 defaults 1 1

LABEL=/boot /boot ext3 defaults 1 2

LABEL=/data /data ext3 defaults 1 2

none /dev/pts devpts gid=5,mode=620 0 0

none /dev/shm tmpfs defaults 0 0

LABEL=/home /home ext3 defaults 1 2

LABEL=/log /log ext3 defaults 1 2

none /proc proc defaults 0 0

none /sys sysfs defaults 0 0

LABEL=/usr /usr ext3 defaults 1 2

LABEL=/var /var ext3 defaults 1 2

LABEL=SWAP-sda5 swap swap defaults 0 0

/dev/sda1  *           63    208844    208782   102M 83 Linux

/dev/sda2          208845  21173669  20964825    10G 83 Linux

/dev/sda3        21173670 230886179 209712510   100G 83 Linux

/dev/sda4       230886180 488392064 257505885 122.8G  5 Extended

/dev/sda5       230886243 272831894  41945652    20G 82 Linux swap / Solaris

/dev/sda6       272831958 293796719  20964762    10G 83 Linux

/dev/sda7       293796783 314761544  20964762    10G 83 Linux

/dev/sda8       314761608 335726369  20964762    10G 83 Linux

/dev/sda9       335726433 488392064 152665632  72.8G 83 Linux

2. 백업 *sdb는 백업 저장용, sda는 원본

mount -t ext4 /dev/sdb1 /mnt

mkdir /mnt/partitions

mount -t ext3 /dev/sda1 /home

dump -0f /mnt/partions/boot.dump /home

umount /home

mount -t ext3 /dev/sda2 /home

dump -0f /mnt/partions/root.dump /home

umount /home

mount -t ext3 /dev/sda3 /home

dump -0f /mnt/partions/data.dump /home

umount /home

mount -t ext3 /dev/sda6 /home

dump -0f /mnt/partions/usr.dump /home

umount /home

mount -t ext3 /dev/sda7 /home

dump -0f /mnt/partions/var.dump /home

umount /home

mount -t ext3 /dev/sda8 /home

dump -0f /mnt/partions/home.dump /home

umount /home

mount -t ext3 /dev/sda9 /home

dump -0f /mnt/partions/log.dump /home

umount /home

3. 새 디스크 파티션

fdisk /dev/sda *다음처럼 용량은 적당히 분배

/dev/sda1 * 83 Linux

/dev/sda2 83 Linux

/dev/sda3 83 Linux

/dev/sda4 5 Extended

/dev/sda5 82 Linux swap / Solaris

/dev/sda6 83 Linux

/dev/sda7 83 Linux

/dev/sda8 83 Linux

/dev/sda9 83 Linux

mkfs.ext3 -I 128 /dev/sda1

tune2fs -l /dev/sda1 | grep -i 'inode size' *128을 기본값으로 해야 grub 복구가 가능했음, 아이노드 크기 확인

mkfs.ext3 /dev/sda2

mkfs.ext3 /dev/sda3

mkswap -L SWAP-sda5 /dev/sda5

mkfs.ext3 /dev/sda6

mkfs.ext3 /dev/sda7

mkfs.ext3 /dev/sda8

mkfs.ext3 /dev/sda9

e2label /dev/sda1 /boot

e2label /dev/sda2 /

e2label /dev/sda3 /data

e2label /dev/sda6 /usr

e2label /dev/sda7 /var

e2label /dev/sda8 /home

e2label /dev/sda9 /log 

4. 파티션 복구

mount /dev/sdb1 /home

mkdir /mnt/restore

cd /mnt/restore

mount /dev/sda2 /mnt/restore

ll

rm -rf "./lost+found"

restore -rf /home/partitions/root.dump

mkdir ./boot

mount /dev/sda1 /mnt/restore/boot

cd ./boot

ll

rm -rf "./lost+found"

restore -rf /home/partitions/boot.dump

cd ..

mkdir ./data

mount /dev/sda3 /mnt/restore/data

cd ./data

ll

rm -rf "./lost+found"

restore -rf /home/partitions/data.dump

cd ..

mkdir ./usr

mount /dev/sda6 /mnt/restore/usr

cd ./usr

ll

rm -rf "./lost+found"

restore -rf /home/partitions/usr.dump

cd ..

mkdir ./var

mount /dev/sda7 /mnt/restore/var

cd ./var

ll

rm -rf "./lost+found"

restore -rf /home/partitions/var.dump

cd ..

mkdir ./home

mount /dev/sda8 /mnt/restore/home

cd ./home

ll

rm -rf "./lost+found"

restore -rf /home/partitions/home.dump

cd ..

mkdir ./log

mount /dev/sda3 /mnt/restore/log

cd ./log

ll

rm -rf "./lost+found"

restore -rf /home/partitions/log.dump

cd /

5. 마무리

chroot /mnt/restore /bin/bash

MAKEDEV sda

grub

root (hd0,0) > setup (hd0) > quit

cat /etc/fstab *점검

sync;sync;sync

exit

umount /mnt/restore/{boot,data,usr,var,home,log}

umount /mnt/restore/

reboot