先dd到新盘，在新盘上玩玩看看
Repairing the filesystem
Do not attempt to repair the filesystem yourself, but seek advice from the developers at the #btrfs IRC channel or the Btrfs mailing list. There are advanced mount options such as -o ro,rescue=all and -o ro,usebackuproot that can assist in recovery, but do not attempt to use them without consulting with experienced admins first.

If the filesystem turned read-only before parent transid verify failed, it may be a false alarm. In this case umount it and try mounting it again.

It is usually not possible to make repairs and get back to a fully working state. If you can mount the filesystem as read-only, use this opportunity to make backups of your files. If it is not possible to mount the filesystem as read-only, then btrfs restore is a last option. Btrfs restore can ignore errors and copy the files from an unmounted filesystem to another device

【 在 ttaudi 的大作中提到: 】
: 第一时间就检查了，换了数据线，电源线和主板sata接口。都换到OK的接口上，但现象还是一样。
: 就是担心丢数据，所以先问问大家看看怎么搞。
:
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FROM 117.128.4.*