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MonkeyKing
Asked: 2024-11-14 03:57:40 +0800 CST

无法读取超级块-btrfs

  • 772

救命！无法读取超级块

我像往常一样使用我的电脑（arch）运行 Android Studio，突然它损坏了，并要求重新启动 IDE，因为文件系统变为只读，我重新启动了整个电脑，现在我无法安装 btrfs 系统。使用 Linux 6.6.60-1-lts、btrfs-progs v6.11

我是这个方面的新手，我使用 btrfs 因为它已成为新的默认设置。

我该如何解决这个问题，请帮忙！到目前为止，我尝试过：

liveuser@localhost-live:~$ sudo btrfs rescue super-recover /dev/sdb3
All supers are valid, no need to recover

liveuser@localhost-live:~$ sudo btrfs rescue zero-log /dev/sdb3
parent transid verify failed on 711704576 wanted 368940 found 368652
parent transid verify failed on 711704576 wanted 368940 found 368652
WARNING: could not setup csum tree, skipping it
parent transid verify failed on 711655424 wanted 368940 found 368652
parent transid verify failed on 711655424 wanted 368940 found 368652
ERROR: could not open ctree

liveuser@localhost-live:~$ sudo btrfs scrub start /dev/sdb3
ERROR: '/dev/sdb3' is not a mounted btrfs device

liveuser@localhost-live:~$ sudo btrfs scrub status /dev/sdb3
ERROR: '/dev/sdb3' is not a mounted btrfs device

liveuser@localhost-live:~$ sudo mount -o usebackuproot /dev/sdb3 /mnt
mount: /mnt: fsconfig system call failed: File exists.
       dmesg(1) may have more information after failed mount system call.

liveuser@localhost-live:~$ sudo btrfs check /dev/sdb3
Opening filesystem to check...
parent transid verify failed on 711704576 wanted 368940 found 368652
parent transid verify failed on 711704576 wanted 368940 found 368652
parent transid verify failed on 711704576 wanted 368940 found 368652
Ignoring transid failure
ERROR: root [7 0] level 0 does not match 2

ERROR: could not setup csum tree
ERROR: cannot open file system

也参与了救援

liveuser@localhost-live:~$ sudo btrfs rescue chunk-recover /dev/sdb3
Scanning: DONE in dev0                        
corrupt leaf: root=1 block=713392128 slot=0, unexpected item end, have 16283 expect 0
leaf free space ret -3574, leaf data size 0, used 3574 nritems 11
leaf 713392128 items 11 free space -3574 generation 368940 owner ROOT_TREE
leaf 713392128 flags 0x1(WRITTEN) backref revision 1
fs uuid 6d8d36ba-d266-4b34-88ad-4f81c383a521
chunk uuid 52ed2048-4a76-4a75-bb75-e1a118ec8118
ERROR: leaf 713392128 slot 0 pointer invalid, offset 15844 size 439 leaf data limit 0
ERROR: skip remaining slots
corrupt leaf: root=1 block=713392128 slot=0, unexpected item end, have 16283 expect 0
leaf free space ret -3574, leaf data size 0, used 3574 nritems 11
leaf 713392128 items 11 free space -3574 generation 368940 owner ROOT_TREE
leaf 713392128 flags 0x1(WRITTEN) backref revision 1
fs uuid 6d8d36ba-d266-4b34-88ad-4f81c383a521
chunk uuid 52ed2048-4a76-4a75-bb75-e1a118ec8118
ERROR: leaf 713392128 slot 0 pointer invalid, offset 15844 size 439 leaf data limit 0
ERROR: skip remaining slots
Couldn't read tree root
open with broken chunk error

并在救援后恢复

liveuser@localhost-live:~$ sudo btrfs restore /dev/sdb3 /dev/sda5
parent transid verify failed on 711704576 wanted 368940 found 368652
parent transid verify failed on 711704576 wanted 368940 found 368652
parent transid verify failed on 711704576 wanted 368940 found 368652
Ignoring transid failure
ERROR: root [7 0] level 0 does not match 2

WARNING: could not setup csum tree, skipping it
parent transid verify failed on 711655424 wanted 368940 found 368652
parent transid verify failed on 711655424 wanted 368940 found 368652
parent transid verify failed on 711655424 wanted 368940 found 368652
Ignoring transid failure
ERROR: root [5 0] level 0 does not match 2

Could not open root, trying backup super
parent transid verify failed on 711704576 wanted 368940 found 368652
parent transid verify failed on 711704576 wanted 368940 found 368652
parent transid verify failed on 711704576 wanted 368940 found 368652
Ignoring transid failure
ERROR: root [7 0] level 0 does not match 2

WARNING: could not setup csum tree, skipping it
parent transid verify failed on 711655424 wanted 368940 found 368652
parent transid verify failed on 711655424 wanted 368940 found 368652
parent transid verify failed on 711655424 wanted 368940 found 368652
Ignoring transid failure
ERROR: root [5 0] level 0 does not match 2

Could not open root, trying backup super
ERROR: superblock bytenr 274877906944 is larger than device size 209715200000
Could not open root, trying backup super

根据 smartctl 的检查，硬盘运行正常。没有重新分配的扇区，其他 ntfs/ext4 分区运行正常。

至少可以恢复数据。谢谢！

我很伤心，丢失了多年来努力积累的数据。我唯一有的备份是几个月前的，之后我做了很多修改。:'(

btrfs

1 个回答

  1. Best Answer

    能够使用以下命令恢复数据：

    sudo btrfs-find-root /dev/sdb3

    输出 ：

    parent transid verify failed on 711704576 wanted 368940 found 368652
parent transid verify failed on 711704576 wanted 368940 found 368652
WARNING: could not setup csum tree, skipping it
parent transid verify failed on 711655424 wanted 368940 found 368652
parent transid verify failed on 711655424 wanted 368940 found 368652
Superblock thinks the generation is 368940
Superblock thinks the level is 0
Found tree root at 713392128 gen 368940 level 0
Well block 711639040(gen: 368939 level: 0)

    然后

    sudo btrfs restore -sxmSi -t 711639040 /dev/sdb3 /path/to/dest/
    • 0

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