Offline Uncorrectable Sectors - Revision history

Rosemark at 13:47, 10 October 2024

2024-10-10T13:47:48Z

← Older revision		Revision as of 13:47, 10 October 2024
Line 1:		Line 1:

			'''Offline Uncorrectable Sectors''' is a common disk-related error experienced on Linux machines. Here's a method you can use to understand and fix them.

			== Fixing Offline Uncorrectable Sectors ==
			Current Pending Sector is the number of locations the disk knows about that needs to be reallocated but haven't reallocated yet.

	~~Current Pending Sector is the number of locations the disk knows about that needs to be reallocated but haven't reallocated yet.~~
	Since the disk has no source for the data to be reallocated it will remain in this state until you write into that location.		Since the disk has no source for the data to be reallocated it will remain in this state until you write into that location.

	Once that location is written to, the disk will automatically reallocate the area to another place and write the new data in the new place and the current pending sector count will decrease.		Once that location is written to, the disk will automatically reallocate the area to another place and write the new data in the new place and the current pending sector count will decrease.


	You can use diskscan on Linux or HD Tune on Windows to scan the disk for the bad locations and also attempt to "fix" the locations by making the software write into them in order to attempt the reallocation immediately.		You can use diskscan on Linux or HD Tune on Windows to scan the disk for the bad locations and also attempt to "fix" the locations by making the software write into them in order to attempt the reallocation immediately.
Line 26:		Line 29:
	Another message will be sent in 24 hours if the problem persists.		Another message will be sent in 24 hours if the problem persists.


	root@example:~# apt install diskscan		root@example:~# apt install diskscan

Rosemark at 16:37, 8 October 2024

2024-10-08T16:37:39Z

← Older revision		Revision as of 16:37, 8 October 2024
Line 54:		Line 54:
	E: Details: error=need_retry data=none 06/29/00		E: Details: error=need_retry data=none 06/29/00
	Disk scan \|==== \| ETA:10h18m51s		Disk scan \|==== \| ETA:10h18m51s
			[[Category:Linux Tutorials]]

Rosemark at 16:30, 8 October 2024

2024-10-08T16:30:43Z

← Older revision		Revision as of 16:30, 8 October 2024
Line 7:		Line 7:

	You can use diskscan on Linux or HD Tune on Windows to scan the disk for the bad locations and also attempt to "fix" the locations by making the software write into them in order to attempt the reallocation immediately.		You can use diskscan on Linux or HD Tune on Windows to scan the disk for the bad locations and also attempt to "fix" the locations by making the software write into them in order to attempt the reallocation immediately.

			This message was generated by the smartd daemon running on:

			host name: host-example
			DNS domain: example.local

			The following warning/error was logged by the smartd daemon:

			Device: /dev/sdf [SAT], 1 Offline uncorrectable sectors

			Device info:
			Micron_1100_MTFDDAK2T0TBN, S/N:17161B3C0923, WWN:5-00a075-11b3c0923, FW:M0MU031, 2.04 TB

			For details see host's SYSLOG.

			You can also use the smartctl utility for further investigation.
			The original message about this issue was sent at Wed May 27 01:46:08 2020 EDT
			Another message will be sent in 24 hours if the problem persists.


	~~<nowiki>~~		root@example:~# apt install diskscan
	~~This message was generated by the smartd daemon running on:~~
			diskscan [options] /dev/sd
	~~host name: hcss-pve03~~		Options:
	~~DNS domain: heard.k12.ga.us~~		-v, --verbose - Increase verbosity, multiple uses for higher levels
			-f, --fix - Attempt to fix near failures, nothing can be done for unreadable sectors
	~~The following warning/error was logged by the smartd daemon:~~		-s, --scan <mode> - Scan in order (seq, random)
			-e, --size <size> - Scan size (default to 64K, must be multiple of 512)
	~~Device: /dev/sdf [SAT], 1 Offline uncorrectable sectors~~		-o, --output <file> - Output file (json)
			-r, --raw-log <file> - Raw log of all scan results (json)
	~~Device info:~~		--force-mounted - Allow checking a read-only mounted disk
	~~Micron_1100_MTFDDAK2T0TBN, S/N:17161B3C0923, WWN:5-00a075-11b3c0923, FW:M0MU031, 2.04 TB~~		--force-mounted-rw - Allow checking a read-write mounted disk

	~~For details see host's SYSLOG.~~		root@example:~# diskscan /dev/sda
			diskscan version 0.19
	~~You can also use the smartctl utility for further investigation.~~
	~~The original message about this issue was sent at Wed May 27 01:46:08 2020 EDT~~		I: Validating path /dev/sda
	~~Another message will be sent in 24 hours if the problem persists.~~		I: Disk start temperature is 28
	~~</nowiki>~~		I: Opened disk /dev/sda sector size 512 num bytes 5000981077504
			I: Scanning disk /dev/sda in 65536 byte steps
	~~<nowiki>~~		I: Scan started at: Thu May 25 11:23:35 2023
	root@~~folkvang~~:~# apt install diskscan
			Disk scan \| \| ETA: 0h00m00s
	diskscan [options] /dev/sd		E: Error when reading at offset 0 size 65536 read -1, errno=0: Success
	Options:		I: Disk temperature changed from 30 to 31
	-v, --verbose - Increase verbosity, multiple uses for higher levels		E: Details: error=need_retry data=none 06/29/00
	-f, --fix - Attempt to fix near failures, nothing can be done for unreadable sectors		Disk scan \|==== \| ETA:10h18m51s
	-s, --scan <mode> - Scan in order (seq, random)
	-e, --size <size> - Scan size (default to 64K, must be multiple of 512)
	-o, --output <file> - Output file (json)
	-r, --raw-log <file> - Raw log of all scan results (json)
	--force-mounted - Allow checking a read-only mounted disk
	--force-mounted-rw - Allow checking a read-write mounted disk

	root@~~folkvang~~:~# diskscan /dev/sda
	diskscan version 0.19

	I: Validating path /dev/sda
	I: Disk start temperature is 28
	I: Opened disk /dev/sda sector size 512 num bytes 5000981077504
	I: Scanning disk /dev/sda in 65536 byte steps
	I: Scan started at: Thu May 25 11:23:35 2023

	Disk scan \| \| ETA: 0h00m00s
	E: Error when reading at offset 0 size 65536 read -1, errno=0: Success
	I: Disk temperature changed from 30 to 31
	E: Details: error=need_retry data=none 06/29/00
	Disk scan \|==== \| ETA:10h18m51s
	~~</nowiki>~~

Rosemark: Rosemark moved page Offline uncorrectable sectors to Offline Uncorrectable Sectors: Misspelled title

2024-10-08T15:03:11Z

Rosemark moved page Offline uncorrectable sectors to Offline Uncorrectable Sectors: Misspelled title

← Older revision	Revision as of 15:03, 8 October 2024
(No difference)

Rosemark: 1 revision imported

2024-10-08T15:02:02Z

1 revision imported

← Older revision	Revision as of 15:02, 8 October 2024
(No difference)

wikipedia>Julian at 16:02, 25 May 2023

2023-05-25T16:02:42Z

New page

Current Pending Sector is the number of locations the disk knows about that needs to be reallocated but haven't reallocated yet.
Since the disk has no source for the data to be reallocated it will remain in this state until you write into that location.
Once that location is written to, the disk will automatically reallocate the area to another place and write the new data in the new place and the current pending sector count will decrease.

You can use diskscan on Linux or HD Tune on Windows to scan the disk for the bad locations and also attempt to "fix" the locations by making the software write into them in order to attempt the reallocation immediately.

<nowiki>
This message was generated by the smartd daemon running on:

host name: hcss-pve03
DNS domain: heard.k12.ga.us

The following warning/error was logged by the smartd daemon:

Device: /dev/sdf [SAT], 1 Offline uncorrectable sectors

Device info:
Micron_1100_MTFDDAK2T0TBN, S/N:17161B3C0923, WWN:5-00a075-11b3c0923, FW:M0MU031, 2.04 TB

For details see host's SYSLOG.

You can also use the smartctl utility for further investigation.
The original message about this issue was sent at Wed May 27 01:46:08 2020 EDT
Another message will be sent in 24 hours if the problem persists.
</nowiki>

<nowiki>
root@folkvang:~# apt install diskscan

diskscan [options] /dev/sd
Options:
-v, --verbose - Increase verbosity, multiple uses for higher levels
-f, --fix - Attempt to fix near failures, nothing can be done for unreadable sectors
-s, --scan <mode> - Scan in order (seq, random)
-e, --size <size> - Scan size (default to 64K, must be multiple of 512)
-o, --output <file> - Output file (json)
-r, --raw-log <file> - Raw log of all scan results (json)
--force-mounted - Allow checking a read-only mounted disk
--force-mounted-rw - Allow checking a read-write mounted disk

root@folkvang:~# diskscan /dev/sda
diskscan version 0.19

I: Validating path /dev/sda
I: Disk start temperature is 28
I: Opened disk /dev/sda sector size 512 num bytes 5000981077504
I: Scanning disk /dev/sda in 65536 byte steps
I: Scan started at: Thu May 25 11:23:35 2023

Disk scan | | ETA: 0h00m00s
E: Error when reading at offset 0 size 65536 read -1, errno=0: Success
I: Disk temperature changed from 30 to 31
E: Details: error=need_retry data=none 06/29/00
Disk scan |==== | ETA:10h18m51s
</nowiki>