FreeBSD Data Rescue

出自KMU Wiki

Using FreeBSD and Open-Source Tools to rescue data

在 FreeBSD 下使用搶救資料的工具

目錄 1 UFS fsck -y failed 2 Bad Partition Table 2.1 Using magicrescue 2.2 Using foremost 2.3 Using gpart 3 Reference

UFS fsck -y failed

If fsck -y UFS failed

# fsck -y
...
UNKNOWN FILE TYPE I=8408063
UNEXPECTED SOFT UPDATE INCONSISTENCY
CLEAR? yes
fsck_4.2bsd: bad inode number 8408064 to nextinode

Try to mount UFS read-only

# mount -r /dev/daXs1d /mnt
# find /mnt -type f -and -size -1G -print > /root/T2
# tar -T /root/T2 -cf - | ssh admin@bak "cat > host-home.tar"

If ls can not see any files or directories, you may try

• /usr/ports/sysutils/ffs2recov
• /usr/ports/sysutils/scan_ffs
• /usr/ports/sysutils/sleuthkit
• /usr/ports/sysutils/autopsy

Using autopsy

# autopsy localhost

using browser to connect http://localhost

add case -> add host -> add image -> ...

Bad Partition Table

Using magicrescue

/usr/ports/sysutils/magicrescue

magicrescue can rescue following file types (ls /usr/local/share/magicrescue/recipes/)

• avi
• flac
• gzip
• mp3-id3v1
• perl
• canon-cr2
• gimp-xcf
• jpeg-exif
• mp3-id3v2
• png
• elf
• gpl
• jpeg-jfif
• msoffice
• zip

First to get the image of the disk or partition

# dd if=/dev/daX of=IMG_DIR/daX.img

Then using magicrescue to rescue MS-Office and JPEG files

# magicrescue -r msoffice -r jpeg-jfif -r jpeg-exif -d OUTPUT_DIR IMG_DIR/daX.img

Using foremost

Using gpart

Reference

magicrescue