如何理解dmesg

我們有redhat機器7.2版，每台機器都有磁碟

作為

sdb
sdc
sdd
sde
sdf

在 dmesg 報告中，我們得到以下資訊

[873080.996700] Buffer I/O error on device sdf, logical block 50575986
[873080.996702] Buffer I/O error on device sdf, logical block 50575987
[873080.996703] Buffer I/O error on device sdf, logical block 50575988
[873080.996705] Buffer I/O error on device sdf, logical block 50575989
[873080.996706] Buffer I/O error on device sdf, logical block 50575990
[873742.837309] sd 1:0:2:0: [sdf] tag#0 FAILED Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[873742.837324] sd 1:0:2:0: [sdf] tag#0 CDB: Write(16) 8a 00 00 00 00 00 18 24 50 88 00 00 01 18 00 00
[873742.837329] blk_update_request: I/O error, dev sdf, sector 405033096
[873742.837338] EXT4-fs warning (device sdf): ext4_end_bio:332: I/O error -5 writing to inode 160908517 (offset 860160 size 139264 starting block 50629172)
[873742.837342] Buffer I/O error on device sdf, logical block 50629137
[873742.837347] Buffer I/O error on device sdf, logical block 50629138
[873742.837350] Buffer I/O error on device sdf, logical block 50629139

我不確定磁碟 - sdf 是否是這裡的問題，需要更換它

是的，disk sdf 在多個塊上報告錯誤。儘早更換。您可能還想研究使用smartctl來獲取磁碟故障的統計資訊

smartctl -a /dev/sdf

https://linux.die.net/man/8/smartctl>和<https://www.thomas-krenn.com/en/wiki/Analyzing_a_Faulty_Hard_Disk_using_Smartctl的更多詳細資訊

引用自：https://unix.stackexchange.com/questions/494234