Hi all,
Mấy hôm nay log báo về cho biết một con ổ cứng chỗ mình bị unreadable sector:
Code:
smartd[7559]: Device: /dev/sda, 1 Currently unreadable (pending) sectors
Theo hướng dẫn này: http://smartmontools.sourceforge.net/badblockhowto.html, mình đã kiểm tra một số cái:
Code:
# smartctl -l selftest /dev/sda
smartctl version 5.38 [x86_64-redhat-linux-gnu] Copyright (C) 2002-8 Bruce Allen
Home page is http://smartmontools.sourceforge.net/
=== START OF READ SMART DATA SECTION ===
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Extended offline Completed: read failure 90% 14355 1746902810
Code:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 1
3 Spin_Up_Time 0x0027 228 228 021 Pre-fail Always - 8566
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 14
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
9 Power_On_Hours 0x0032 081 081 000 Old_age Always - 14374
10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0
11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 12
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 5
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 14
194 Temperature_Celsius 0x0022 119 103 000 Old_age Always - 31
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 1
198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0
Mọi người để ý ở ID #197 có 1 cái Current_Pending_Sector.
Thử tiếp với các bước ở dưới:
Code:
# debugfs
debugfs 1.39 (29-May-2006)
debugfs: open /dev/sda2
/dev/sda2: Bad magic number in super-block while opening filesystem
debugfs:
Xem thử có cái super-block nào ở chỗ khác để thay thế không:
Code:
# dumpe2fs /dev/sda2 | grep -i superblock
dumpe2fs 1.39 (29-May-2006)
dumpe2fs: Bad magic number in super-block while trying to open /dev/sda2
Couldn't find valid filesystem superblock.
Thử đoán super-block ở một số vị trí khác, nhưng không ăn thua:
Code:
# debugfs
debugfs 1.39 (29-May-2006)
debugfs: open -b 4096 -s 32768 -c /dev/sda2
/dev/sda2: Bad magic number in super-block while opening filesystem
debugfs: open -b 4096 -s 98304 -c /dev/sda2
/dev/sda2: Bad magic number in super-block while opening filesystem
debugfs: open -b 4096 -s 163840 -c /dev/sda2
/dev/sda2: Bad magic number in super-block while opening filesystem
debugfs:
Bạn nào có kinh nghiệm vụ này giúp mình với. Cảm ơn mọi người.