Is disk really bad if mkfs.ext4 -c -c reports errors?
Chris Green
cl at isbd.net
Wed Jan 11 16:46:41 UTC 2017
On Wed, Jan 11, 2017 at 10:36:32AM -0500, Rashkae wrote:
> On 17-01-11 06:47 AM, Chris Green wrote:
> > I have been reformatting a disk which had a few corrupted files on it
> > with the following command:-
> >
> > mkfs.ext4 -c -c /dev/sdb1
> >
> > (Yes, I know this destroys all the data, everything except the few
> > corrupted files has been copied off the disk)
>
> It wold help if you can provide a copy of the errors you're getting. I
> would also include the output of smartctl -a /dev/sdb as well as the last
> relevant data from dmesg when you get these errors.
>
The mkfs is still running:-
root at backup:~# mkfs.ext4 -c -c /dev/sdb1
mke2fs 1.42.13 (17-May-2015)
Creating filesystem with 732566385 4k blocks and 183148544 inodes
Filesystem UUID: d1f0d08e-e7d5-49f0-b4cb-72142541f4fa
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000, 214990848, 512000000, 550731776, 644972544
Testing with pattern 0xaa: done
Reading and comparing: done
Testing with pattern 0x55: 67.02% done, 23:57:16 elapsed. (0/78947/0 errors)
... and the smartctl output:-
root at backup:~# smartctl -a /dev/sdb
smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.4.0-57-generic] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: Toshiba 3.5" DT01ACA... Desktop HDD
Device Model: TOSHIBA DT01ACA300
Serial Number: Y3NDKNYGS
LU WWN Device Id: 5 000039 ff4d3ce4f
Firmware Version: MX6OABB0
User Capacity: 3,000,592,982,016 bytes [3.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 4
SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is: Wed Jan 11 16:43:24 2017 GMT
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x82) Offline data collection activity
was completed without error.
Auto Offline Data Collection: Enabled.
Self-test execution status: ( 0) The previous self-test routine completed
without error or no self-test has ever
been run.
Total time to complete Offline
data collection: (21791) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 1) minutes.
Extended self-test routine
recommended polling time: ( 364) minutes.
SCT capabilities: (0x003d) SCT Status supported.
SCT Error Recovery Control supported.
SCT Feature Control supported.
SCT Data Table supported.
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000b 100 100 016 Pre-fail Always - 0
2 Throughput_Performance 0x0005 139 139 054 Pre-fail Offline - 70
3 Spin_Up_Time 0x0007 139 139 024 Pre-fail Always - 389 (Average 434)
4 Start_Stop_Count 0x0012 100 100 000 Old_age Always - 295
5 Reallocated_Sector_Ct 0x0033 100 100 005 Pre-fail Always - 0
7 Seek_Error_Rate 0x000b 100 100 067 Pre-fail Always - 0
8 Seek_Time_Performance 0x0005 124 124 020 Pre-fail Offline - 33
9 Power_On_Hours 0x0012 097 097 000 Old_age Always - 24656
10 Spin_Retry_Count 0x0013 100 100 060 Pre-fail Always - 0
12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 34
192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 980
193 Load_Cycle_Count 0x0012 100 100 000 Old_age Always - 980
194 Temperature_Celsius 0x0002 214 214 000 Old_age Always - 28 (Min/Max 7/53)
196 Reallocated_Event_Count 0x0032 100 100 000 Old_age Always - 0
197 Current_Pending_Sector 0x0022 100 100 000 Old_age Always - 0
198 Offline_Uncorrectable 0x0008 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x000a 200 200 000 Old_age Always - 0
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
# 1 Short offline Completed without error 00% 6167 -
SMART Selective self-test log data structure revision number 1
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
--
Chris Green
More information about the ubuntu-users
mailing list