來自核心消息的 HDD IO 錯誤 + 這絕對是 HDD 故障嗎

在我們的 RHEL 伺服器上，RHEL 版本 - 7.2，我們看到許多 dmesg 行：

關於 sdb 磁碟（硬碟驅動器）的範例

[Thu Dec 30 13:07:48 2021] EXT4-fs (sdb): error count since last fsck: 1329
[Thu Dec 30 13:07:48 2021] EXT4-fs (sdb): initial error at time 1614482941: ext4_find_entry:1312: inode 67240512
[Thu Dec 30 13:07:48 2021] EXT4-fs (sdb): last error at time 1640670898: ext4_find_entry:1312: inode 67240512
[Thu Dec 30 13:12:19 2021] sd 0:0:1:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[Thu Dec 30 13:12:19 2021] sd 0:0:1:0: [sdb] tag#0 Sense Key : Medium Error [current]
[Thu Dec 30 13:12:19 2021] sd 0:0:1:0: [sdb] tag#0 Add. Sense: Unrecovered read error
[Thu Dec 30 13:12:19 2021] sd 0:0:1:0: [sdb] tag#0 CDB: Read(10) 28 00 80 41 13 38 00 00 08 00
[Thu Dec 30 13:12:19 2021] blk_update_request: critical medium error, dev sdb, sector 2151748408



[Thu Dec 30 13:14:38 2021] EXT4-fs warning (device sdb): __ext4_read_dirblock:902: error reading directory block (ino 67240512, block 0)
[Thu Dec 30 13:17:05 2021] NOHZ: local_softirq_pending 08
[Thu Dec 30 13:21:26 2021] NOHZ: local_softirq_pending 08
[Thu Dec 30 13:21:59 2021] sd 0:0:1:0: [sdb] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[Thu Dec 30 13:21:59 2021] sd 0:0:1:0: [sdb] tag#0 Sense Key : Medium Error [current]
[Thu Dec 30 13:21:59 2021] sd 0:0:1:0: [sdb] tag#0 Add. Sense: Unrecovered read error
[Thu Dec 30 13:21:59 2021] sd 0:0:1:0: [sdb] tag#0 CDB: Read(10) 28 00 80 41 13 38 00 00 08 00
[Thu Dec 30 13:21:59 2021] blk_update_request: critical medium error, dev sdb, sector 2151748408
[Thu Dec 30 13:21:59 2021] EXT4-fs warning (device sdb): __ext4_read_dirblock:902: error reading directory block (ino 67240512, block 0)
[Thu Dec 30 13:25:32 2021] NOHZ: local_softirq_pending 08
[Thu Dec 30 13:27:19 2021] NOHZ: local_softirq_pending 08
[Thu Dec 30 13:29:14 2021] NOHZ: local_softirq_pending 08

問題是基於上述消息：

是不是 - 最有可能的原因是硬碟驅動器如果年老而死？

如果是，我們應該怎麼做 - 更換磁碟/s？

參考資料 - https://access.redhat.com/solutions/35465

“Dying of old age”意味著驅動器是舊的，我們無法從日誌中的資訊中確定。

但是我假設這是在專業環境中；如果是這樣，在我看來，任何磁碟介質錯誤都應該觸發磁碟更換。“嚴重介質錯誤”消息表明這是一個磁碟錯誤，與磁碟和系統之間的故障（例如電纜故障）無關。您問題中的日誌僅顯示一個故障扇區，因此很可能是局部故障，但如果您依賴數據儲存，則不值得冒險。

如果只有一個（或幾個）故障扇區，您可以嘗試重新映射它們以繼續使用驅動器（暫時）；例如，參見smartctl retest bad sector。

引用自：https://unix.stackexchange.com/questions/684808