由于突然断电过几次，samba服务器挂载的硬盘感觉没有之前快了，怀疑有产生磁盘坏道。

使用fsck命令对磁盘分区进行坏道分析并把坏道 标记出来。

fsck -c 检查是否存在有损坏的区块。

fsck -l 把文件中所列出的损坏区块，加入标记

还好没有坏道。只有一些优化建议。

root@kali:~# fsck -c /dev/sdb2

fsck from util-linux 2.34

e2fsck 1.45.5 (07-Jan-2020)

Checking for bad blocks (read-only test): done

DATA-2: Updating bad block inode.

Pass 1: Checking inodes, blocks, and sizes

Inode 131736995 extent tree (at level 2) could be narrower. Optimize? yes

Inode 131736996 extent tree (at level 2) could be narrower. Optimize? yes

Inode 131736997 extent tree (at level 2) could be narrower. Optimize? yes

Inode 131736998 extent tree (at level 2) could be narrower. Optimize? yes

Inode 131736999 extent tree (at level 1) could be narrower. Optimize? yes

Inode 131737005 extent tree (at level 2) could be narrower. Optimize? yes

Inode 131737006 extent tree (at level 2) could be narrower. Optimize? yes

Inode 131737010 extent tree (at level 1) could be narrower. Optimize? yes

Inode 131737013 extent tree (at level 2) could be narrower. Optimize? yes

Inode 131737016 extent tree (at level 2) could be narrower. Optimize ('a' enables 'yes' to all) ? yes

Inode 131737026 extent tree (at level 2) could be narrower. Optimize ('a' enables 'yes' to all) ? yes

Pass 1E: Optimizing extent trees

Pass 2: Checking directory structure

Pass 3: Checking directory connectivity

Pass 4: Checking reference counts

Pass 5: Checking group summary information

DATA-2: ***** FILE SYSTEM WAS MODIFIED *****

DATA-2: 96879/164855808 files (2.0% non-contiguous), 255902321/659413749 blocks

root@kali:~# umount -l /media/root/DATA

root@kali:~# fsck -c /dev/sdb1

fsck from util-linux 2.34

e2fsck 1.45.5 (07-Jan-2020)

Checking for bad blocks (read-only test): ^C2.40% done, 23:03 elapsed. (0/0/0 errors)

Interrupted at block 7603904

DATA: Updating bad block inode.

DATA: ***** FILE SYSTEM WAS MODIFIED *****

root@kali:~# fsck -c /dev/sdb1

fsck from util-linux 2.34

e2fsck 1.45.5 (07-Jan-2020)

Checking for bad blocks (read-only test): done

DATA: Updating bad block inode.

Pass 1: Checking inodes, blocks, and sizes

Pass 2: Checking directory structure

Pass 3: Checking directory connectivity

Pass 4: Checking reference counts

Pass 5: Checking group summary information

DATA: ***** FILE SYSTEM WAS MODIFIED *****

DATA: 12/79339520 files (0.0% non-contiguous), 5358017/317332481 blocks

fsck具体参数参考：http://linux.51yip.com/search/fsck.ext4