操作系統：SUSE Linux 11
文件系統：ext3
X日，接到告警，檢查文件系統/dev/sda1發現寫入報只讀，檢查IP存儲有告警，隨即umount /img，但卸載後無法正常掛載
fdisk -l顯示IO錯誤，重啟應用服務器後依然無法正常掛載，顯示IO錯誤，
檢查IP存儲有告警信息，待存儲廠商解決存儲問題後，重啟應用服務器仍然無法正常掛載文件系統，
由於mount命令執行後長時間無響應，但觀察/var/log/messages仍然顯示系統在進行block的掃描：
Nov 2 06:04:53 linux11 kernel: [128293.578670] Buffer I/O error on device sda1, logical block 483584660
Nov 2 06:04:53 linux11 kernel: [128293.578672] lost page write due to I/O error on sda1
Nov 2 06:05:01 linux11 /usr/sbin/cron[15283]: (root) CMD ( /opt/hp/hp-health/bin/check-for-restart-requests)
Nov 2 06:05:53 linux11 kernel: [128353.584893] sd 9:0:0:0: [sda] Unhandled sense code
Nov 2 06:05:53 linux11 kernel: [128353.584898] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Nov 2 06:05:53 linux11 kernel: [128353.584901] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
Nov 2 06:05:53 linux11 kernel: [128353.584905] sd 9:0:0:0: [sda] Add. Sense: Medium not present
Nov 2 06:05:53 linux11 kernel: [128353.584910] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 e6 97 59 5f 00 00 08 00
Nov 2 06:05:53 linux11 kernel: [128353.584916] end_request: I/O error, dev sda, sector 3868678495
Nov 2 06:05:53 linux11 kernel: [128353.584920] Buffer I/O error on device sda1, logical block 483584804
Nov 2 06:05:53 linux11 kernel: [128353.584922] lost page write due to I/O error on sda1
Nov 2 06:05:53 linux11 kernel: [128353.599875] sd 9:0:0:0: [sda] Unhandled sense code
Nov 2 06:05:53 linux11 kernel: [128353.599878] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Nov 2 06:05:53 linux11 kernel: [128353.599880] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
Nov 2 06:05:53 linux11 kernel: [128353.599883] sd 9:0:0:0: [sda] Add. Sense: Medium not present
Nov 2 06:05:53 linux11 kernel: [128353.599886] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 e6 97 5f bf 00 00 08 00
Nov 2 06:05:53 linux11 kernel: [128353.599890] end_request: I/O error, dev sda, sector 3868680127
Nov 2 06:05:53 linux11 kernel: [128353.599893] Buffer I/O error on device sda1, logical block 483585008
Nov 2 06:05:53 linux11 kernel: [128353.599895] lost page write due to I/O error on sda1
Nov 2 06:05:53 linux11 kernel: [128353.600872] sd 9:0:0:0: [sda] Unhandled sense code
Nov 2 06:05:53 linux11 kernel: [128353.600875] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Nov 2 06:05:53 linux11 kernel: [128353.600877] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
Nov 2 06:05:53 linux11 kernel: [128353.600879] sd 9:0:0:0: [sda] Add. Sense: Medium not present
Nov 2 06:05:53 linux11 kernel: [128353.600882] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 e6 97 62 47 00 00 08 00
Nov 2 06:05:53 linux11 kernel: [128353.600887] end_request: I/O error, dev sda, sector 3868680775
紅色部分顯示系統仍在工作中，等待20小時候，工程師建議繼續等待，20小時後，mount命令運行結束
linux11:~ #mount /dev/sda1 /mnt/
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
linux11:~ #dmesg|tail -50
[138764.297170] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[138764.297172] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
[138764.297175] sd 9:0:0:0: [sda] Add. Sense: Medium not present
[138764.297178] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 f2 1f f5 b7 00 00 10 00
[138764.297182] end_request: I/O error, dev sda, sector 4062180791
[138764.312193] sd 9:0:0:0: [sda] Unhandled sense code
[138764.312197] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[138764.312199] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
[138764.312202] sd 9:0:0:0: [sda] Add. Sense: Medium not present
[138764.312204] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 f2 20 37 9f 00 00 08 00
[138764.312209] end_request: I/O error, dev sda, sector 4062197663
[138764.312224] sd 9:0:0:0: [sda] Unhandled sense code
[138764.312226] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[138764.312228] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
[138764.312230] sd 9:0:0:0: [sda] Add. Sense: Medium not present
[138764.312233] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 f2 20 38 b7 00 00 08 00
[138764.312237] end_request: I/O error, dev sda, sector 4062197943
[138764.312242] sd 9:0:0:0: [sda] Unhandled sense code
[138764.312243] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[138764.312245] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
[138764.312247] sd 9:0:0:0: [sda] Add. Sense: Medium not present
[138764.312250] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 f2 20 7f 87 00 00 08 00
[138764.312254] end_request: I/O error, dev sda, sector 4062216071
[138824.286688] sd 9:0:0:0: [sda] Unhandled sense code
[138824.286692] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[138824.286696] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
[138824.286699] sd 9:0:0:0: [sda] Add. Sense: Medium not present
[138824.286704] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 f2 20 f2 bf 00 00 08 00
[138824.286710] end_request: I/O error, dev sda, sector 4062245567
[138824.286714] __ratelimit: 8 callbacks suppressed
[138824.286718] Buffer I/O error on device sda1, logical block 507780688
[138824.286719] lost page write due to I/O error on sda1
[138824.324706] sd 9:0:0:0: [sda] Unhandled sense code
[138824.324709] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[138824.324711] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
[138824.324714] sd 9:0:0:0: [sda] Add. Sense: Medium not present
[138824.324717] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 f2 20 fa 1f 00 00 08 00
[138824.324722] end_request: I/O error, dev sda, sector 4062247455
[138824.324726] Buffer I/O error on device sda1, logical block 507780924
[138824.324727] lost page write due to I/O error on sda1
[138824.324741] sd 9:0:0:0: [sda] Unhandled sense code
[138824.324742] sd 9:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[138824.324744] sd 9:0:0:0: [sda] Sense Key : Medium Error [current]
[138824.324747] sd 9:0:0:0: [sda] Add. Sense: Medium not present
[138824.324749] sd 9:0:0:0: [sda] CDB: Write(10): 2a 00 f2 2e a1 17 00 00 08 00
[138824.324754] end_request: I/O error, dev sda, sector 4063142167
[138824.324756] Buffer I/O error on device sda1, logical block 507892763
[138824.324758] lost page write due to I/O error on sda1
[138824.324773] JBD: recovery failed
[138824.324774] EXT3-fs: error loading journal.
