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救援后无法挂载 XFS，为什么？

tag-icon • tag-icon linux mount gpt xfs ddrescue
救援后无法挂载 XFS，为什么？

我在 XFS 文件系统方面遇到了一个奇怪的问题。下面是具体的场景：

我的 2TB 磁盘损坏了 XFS（I/O 错误），因此决定将数据从旧磁盘恢复到新磁盘。

我会跑去ddrescue将数据保存到新磁盘上。ddrescue除了 204kB 数据外，已成功完成。之后我尝试安装新磁盘但没有成功。下面我发布ddrescue结果和安装错误。请帮我解决这个问题。我将非常感激。

ddrescue结果：

# ddrescue --force -n /dev/sdc /dev/sde  
GNU ddrescue 1.16  
About to copy 2198 GB from /dev/sdc to /dev/sde  
Starting positions:  
Infile = 0 B, outfile = 0 B  
Copy Block size: 128 sectors Initial skip size: 128 sectors Sectors size: 512 Bytes  

Press Ctrl-C to interrupt  
rescued : 2198 GB, errsize : 204 kB, current rate : 1560 B/s  
Ipos : 68699 MB, errors : 15, average rate : 29103 KB/s  
Opos : 68699 MB, time since last successful read : 0 s  
Finished
磁盘驱动器 
# fdisk -l  
Disk /dev/sdc: 2198.3 GB, 2198352166912 bytes 255 heads, 63 sectors/track, 267267 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System

/dev/sdc1 1 267350 2147483647+ ee EFI GPT

Disk /dev/sde: 2198.3 GB, 2198352166912 bytes 255 heads, 63 sectors/track, 267267 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System  
/dev/sde1 1 267350 2147483647+ ee EFI GPT
ls -l /dev/sd* 
# ls -l /dev/sd*
brw-r----- 1 root disk 8,  0 Feb 28 02:00 /dev/sda  
brw-r----- 1 root disk 8,  1 Feb 28 02:00 /dev/sda1  
brw-r----- 1 root disk 8,  2 Feb 28 02:00 /dev/sda2  
brw-r----- 1 root disk 8,  3 Feb 27 18:00 /dev/sda3  
brw-r----- 1 root disk 8,  4 Feb 28 02:00 /dev/sda4  
brw-r----- 1 root disk 8,  5 Feb 28 02:00 /dev/sda5  
brw-r----- 1 root disk 8, 16 Feb 28 02:00 /dev/sdb  
brw-r----- 1 root disk 8, 17 Feb 28 02:00 /dev/sdb1  
brw-r----- 1 root disk 8, 32 Feb 28 02:00 /dev/sdc  
brw-r----- 1 root disk 8, 48 Feb 28 02:00 /dev/sdd  
brw-r----- 1 root disk 8, 49 Feb 28 02:00 /dev/sdd1  
brw-r----- 1 root disk 8, 64 Feb 28 02:00 /dev/sde

里面 # fdisk -l 命令 /dev/dec1 和 /dev/sde1 丢失

分开的打印 
# parted -i /dev/sde print
Model: DELL PERC 5/i (scsi)  
Disk /dev/sde: 2198GB  
Sector size (logical/physical): 512B/512B  
Partition Table: msdos  

Number  Start   End     Size    Type     File system  Flags  
 1      32.3kB  2198GB  2198GB  primary  xfs                 

Information: Don't forget to update /etc/fstab, if necessary.
正在尝试挂载 
# mount -t xfs /dev/sde /mnt/mail3
mount: wrong fs type, bad option, bad superblock on /dev/sde,
       missing codepage or other error
       In some cases useful info is found in syslog - try  
       dmesg | tail  or so
dmesg、/var/log/messages 和文件输出 
# dmesg | tail  
XFS: bad magic number  
XFS: SB validate failed  

# tail -f /var/log/messages  
Feb 28 04:09:29 mail kernel: XFS: bad magic number  
Feb 28 04:09:29 mail kernel: XFS: SB validate failed  

# file -s /dev/sde  
/dev/sde: x86 boot sector; partition 1: ID=0xee, starthead 0, startsector 1, 4294967295 sectors, extended partition table (last)\011

请帮忙，我们将不胜感激。

尝试挂载为 hfsplus 
# mount -t hfsplus /dev/sde1 /mnt/mail3  
mount: special device /dev/sde1 does not exist

# mount -t hfsplus /dev/sde /mnt/mail3  
mount: wrong fs type, bad option, bad superblock on /dev/sde,  
missing codepage or other error  
In some cases useful info is found in syslog  
- try dmesg | tail  or so

# dmesg | tail  
hfs: unable to find HFS+ superblock

# tail -f /var/log/messages  
Feb 28 02:40:26 mail kernel: hfs: unable to find HFS+ superblock

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