g_vfs_done() ada2p1 error = 5
Arthur Chance
freebsd at qeng-ho.org
Tue May 5 10:33:50 UTC 2020
On 05/05/2020 10:17, Christoph Kukulies wrote:
>
>
>> Am 05.05.2020 um 10:50 schrieb Polytropon <freebsd at edvax.de>:
>>
>> On Tue, 5 May 2020 10:42:56 +0200, Christoph Kukulies wrote:
>>> I have a GPT partitioned SSD here which was serving as a boot
>>> volume of my previously installed
>>> FreeBSD 8.0 and now, as I have 12.1 installed and booting from
>>> that I have mounted this SD into
>>> my running system.
>>>
>>> In my system log I’m seeing the following error message (and when
>>> I try to mount that partition, I’m getting an
>>> INPUT/OUTPUT error also):
>>>
>>> g_vfs_done():ada2p1[READ(offest=262144, length=8192)]error = 5
>>>
>>> ada2 at ahcich2 bus 0 scbus2 target 0 lun 0
>>> [...]
>>>
>>> What does this error message mean? How do I get rid of it?
>>
>> Could it be that the SSD has reached the end of its lifetime?
>
>
> Hope not. Was trusting that FreeBSD takes care of saving SSDs from degrading over time.
It's good, but FreeBSD can't prevent wear and tear. SSDs have a finite
lifetime and all an OS can do is not decrease it.
>> I've seen similar messages on regular hard disks which were
>> about to die... Can you check the SSD with smartctl and see
>> if there is something suspicious?
>>
>
>
> The output of smartctl is overwhelming :) Happen to know what I should look for?
The attributes section is often the place to start. You can see just
that by giving the -A flag to smartctl.
> smartctl 7.1 2019-12-30 r5022 [FreeBSD 12.1-RELEASE amd64] (local build)
> Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org
>
> === START OF INFORMATION SECTION ===
> Model Family: Samsung based SSDs
> Device Model: Samsung SSD 840 EVO 120GB
> Serial Number: S1D5NSAD978704E
> LU WWN Device Id: 5 002538 8a002c09c
> Firmware Version: EXT0AB0Q
> User Capacity: 120,034,123,776 bytes [120 GB]
> Sector Size: 512 bytes logical/physical
> Rotation Rate: Solid State Device
> Device is: In smartctl database [for details use: -P show]
> ATA Version is: ACS-2, ATA8-ACS T13/1699-D revision 4c
> SATA Version is: SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
> Local Time is: Tue May 5 11:11:45 2020 CEST
> 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: (0x00) Offline data collection activity
> was never started.
> Auto Offline Data Collection: Disabled.
> 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: ( 4200) seconds.
> Offline data collection
> capabilities: (0x53) SMART execute Offline immediate.
> Auto Offline data collection on/off support.
> Suspend Offline collection upon new
> command.
> No 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: ( 2) minutes.
> Extended self-test routine
> recommended polling time: ( 70) 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: 1
> Vendor Specific SMART Attributes with Thresholds:
> ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
> 5 Reallocated_Sector_Ct 0x0033 100 100 010 Pre-fail Always - 0
> 9 Power_On_Hours 0x0032 091 091 000 Old_age Always - 42753
> 12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always - 69
> 177 Wear_Leveling_Count 0x0013 099 099 000 Pre-fail Always - 2
> 179 Used_Rsvd_Blk_Cnt_Tot 0x0013 100 100 010 Pre-fail Always - 0
> 181 Program_Fail_Cnt_Total 0x0032 100 100 010 Old_age Always - 0
> 182 Erase_Fail_Count_Total 0x0032 100 100 010 Old_age Always - 0
> 183 Runtime_Bad_Block 0x0013 100 100 010 Pre-fail Always - 0
> 187 Uncorrectable_Error_Cnt 0x0032 100 100 000 Old_age Always - 0
> 190 Airflow_Temperature_Cel 0x0032 073 057 000 Old_age Always - 27
> 195 ECC_Error_Rate 0x001a 200 200 000 Old_age Always - 0
> 199 CRC_Error_Count 0x003e 100 100 000 Old_age Always - 0
> 235 POR_Recovery_Count 0x0012 099 099 000 Old_age Always - 51
> 241 Total_LBAs_Written 0x0032 099 099 000 Old_age Always - 1078954976
Attributes 177, 179, 181, 182, 183 & 241 are interesting for SSDs.
You've not used any of your spare blocks, and you've had ~1 billion
writes. For comparison I've got a 840 PRO in one of my machines and
that's showing a wear leveling count of 17 and ~4 billion writes.
>From Samsung's documentation (found via an online forum)
ID # 177 Wear Leveling Count
This attribute represents the number of media program and erase
operations (the number of times a block has been erased). This value is
directly related to the lifetime of the SSD. The raw value of this
attribute shows the total count of P/E Cycles.
Each MLC NAND cell can be erased ~10,000 times before it stops reliably
holding charge.
Given your wear leveling count is 2 you should be a long way off end of
life.
> SMART Error Log Version: 1
> No Errors Logged
>
> SMART Self-test log structure revision number 1
> No self-tests have been logged. [To run self-tests, use: smartctl -t]
>
> 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.
>
--
Fat Earther: One who believes the world is round but has put on too
much weight round the middle.
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