root用户收到警告邮件：

Device: /dev/sdb [SAT], 24 Offline uncorrectable sectors

/var/log/message里有一堆这样的信息

但badblocks明显没有检测到坏区：
[root@ac11 gsar]# badblocks -s -v /dev/sdb1 -b 4096
Checking blocks 0 to 1465130239
Checking for bad blocks (read-only test):   0.00% done, 0:00 elapsed. (0/0/0 errdone                                                
Pass completed, 0 bad blocks found. (0/0/0 errors)
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FROM 47.241.77.*