FreeBSD Data Rescue

出自KMU Wiki

在2009年6月22日 (一) 11:05由Cch (對話 | 貢獻)所做的修訂版本
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在 FreeBSD 利用自由軟體搶救檔案

目錄

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
find home -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
e.g.  Using autopsy
sudo autopsy 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
e.g.
將欲搶救的硬碟拆下,用 USB-to-ATA/SATA 轉接器
magicrescue -r msoffice -r jpeg-jfif -r jpeg-exif -d ~/output /dev/da0
或 (避免多次讀取 /dev/da0)
dd if=/dev/da0 of=/big/da0img
magicrescue -r msoffice -r jpeg-jfif -r jpeg-exif -d ~/output /big/da0img

Using foremost

Using gpart

Reference

magicrescue