BTRFS 无法挂载

Question

嘿，更新期间冻结后，我的 btrfs 分区无法挂载。我从我能找到的 Archlinux 和 BTRFS Wiki 中尝试了所有，但这还不够。

我的尝试和输出：

$ sudo mount -t btrfs /dev/sda3 /mnt

mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sda3, missing codepage or helper program, or other error.

$ sudo btrfs 救援超级恢复 /dev/sda3

parent transid verify failed on 204229967872 wanted 182262 found 182259
parent transid verify failed on 204229967872 wanted 182262 found 182259
Ignoring transid failure
parent transid verify failed on 204229853184 wanted 182261 found 182259
parent transid verify failed on 204229853184 wanted 182261 found 182259
Ignoring transid failure
leaf parent key incorrect 204229853184
Failed to recover bad superblocks
double free or corruption (fasttop)
Aborted

$ sudo btrfsck --repair /dev/sda3

enabling repair mode
parent transid verify failed on 204229967872 wanted 182262 found 182259
parent transid verify failed on 204229967872 wanted 182262 found 182259
Ignoring transid failure
parent transid verify failed on 204229853184 wanted 182261 found 182259
parent transid verify failed on 204229853184 wanted 182261 found 182259
Ignoring transid failure
leaf parent key incorrect 204229853184
ERROR: cannot open file system

$ sudo btrfs 救援零日志​​ /dev/sda3

parent transid verify failed on 204229967872 wanted 182262 found 182259
parent transid verify failed on 204229967872 wanted 182262 found 182259
Ignoring transid failure
parent transid verify failed on 204229853184 wanted 182261 found 182259
parent transid verify failed on 204229853184 wanted 182261 found 182259
Ignoring transid failure
leaf parent key incorrect 204229853184
ERROR: could not open ctree

$ sudo btrfs 检查 --repair --init-extent-tree --init-csum-tree /dev/sda3

enabling repair mode
Creating a new CRC tree
parent transid verify failed on 204229967872 wanted 182262 found 182259
parent transid verify failed on 204229967872 wanted 182262 found 182259
Ignoring transid failure
Checking filesystem on /dev/sda3
UUID: 4951455b-7883-46a3-a878-d6347f852867
repair mode will force to clear out log tree, are you sure? [y/N]: y
Unable to find block group for 0
Unable to find block group for 0
Unable to find block group for 0
extent-tree.c:2764: alloc_tree_block: BUG_ON `ret` triggered, value -28
btrfs(+0x1fe10)[0x55e6ed511e10]
btrfs(+0x1fe80)[0x55e6ed511e80]
btrfs(+0x1fe93)[0x55e6ed511e93]
btrfs(btrfs_alloc_free_block+0x83)[0x55e6ed51621c]
btrfs(__btrfs_cow_block+0xfe)[0x55e6ed50a7fc]
btrfs(btrfs_cow_block+0xc5)[0x55e6ed50ada1]
btrfs(commit_tree_roots+0x56)[0x55e6ed52f844]
btrfs(btrfs_commit_transaction+0xb9)[0x55e6ed52fb18]
btrfs(cmd_check+0x757)[0x55e6ed545686]
btrfs(main+0x143)[0x55e6ed509847]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb)[0x7f47c685f09b]
btrfs(_start+0x2a)[0x55e6ed50988a]
Aborted

Answer 1

我想你可以试试这个：

sudo mount -o noatime,commit=120,compress=zstd,space_cache=v2,discard=async,subvol=@ /dev/sda2 /mnt

将子卷名称更改为您尝试安装的实际子卷。@ 是 / ，而 root 下的任何其他挂载点，例如 /home 是 @home 等等。您可以忽略大多数安装选项，但这subvol是必要的。