Linux device management - Revision history

Benrwong at 17:29, 30 June 2016

2016-06-30T17:29:12Z

← Older revision		Revision as of 17:29, 30 June 2016
Line 1:		Line 1:
	DEVICE MANAGEMENT/CHECKING		=DEVICE MANAGEMENT/CHECKING=

	To see if there was a disk failure on a machine type:		To see if there was a disk failure on a machine type:
Line 99:		Line 99:
	3 Spin_Up_Time 0x0002 098 097 000 Old_age Always - 0		3 Spin_Up_Time 0x0002 098 097 000 Old_age Always - 0
	4 Start_Stop_Count 0x0033 100 100 020 Pre-fail Always - 54		4 Start_Stop_Count 0x0033 100 100 020 Pre-fail Always - 54
	5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0		5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0
	7 Seek_Error_Rate 0x000f 081 060 030 Pre-fail Always - 164061635		7 Seek_Error_Rate 0x000f 081 060 030 Pre-fail Always - 164061635
	9 Power_On_Hours 0x0032 049 049 000 Old_age Always - 44875		9 Power_On_Hours 0x0032 049 049 000 Old_age Always - 44875
Line 107:		Line 107:
	187 Reported_Uncorrect 0x003a 100 100 051 Old_age Always - 0		187 Reported_Uncorrect 0x003a 100 100 051 Old_age Always - 0
	189 High_Fly_Writes 0x0022 100 100 000 Old_age Always - 0		189 High_Fly_Writes 0x0022 100 100 000 Old_age Always - 0
	190 Airflow_Temperature_Cel 0x001a 074 064 000 Old_age Always - 26 (Min/Max 23/29)		190 Airflow_Temperature_Cel 0x001a 074 064 000 Old_age Always - 26 (Min/Max 23/29)
	194 Temperature_Celsius 0x0000 026 040 000 Old_age Offline - 26 (0 16 0 0 0)		194 Temperature_Celsius 0x0000 026 040 000 Old_age Offline - 26 (0 16 0 0 0)
	195 Hardware_ECC_Recovered 0x0032 074 063 000 Old_age Always - 158710899		195 Hardware_ECC_Recovered 0x0032 074 063 000 Old_age Always - 158710899
	197 Current_Pending_Sector 0x0000 100 100 000 Old_age Offline - 0		197 Current_Pending_Sector 0x0000 100 100 000 Old_age Offline - 0
	198 Offline_Uncorrectable 0x0000 100 100 000 Old_age Offline - 0		198 Offline_Uncorrectable 0x0000 100 100 000 Old_age Offline - 0
	199 UDMA_CRC_Error_Count 0x0000 200 200 000 Old_age Offline - 0		199 UDMA_CRC_Error_Count 0x0000 200 200 000 Old_age Offline - 0

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	If Selective self-test is pending on power-up, resume after 0 minute delay.		If Selective self-test is pending on power-up, resume after 0 minute delay.

	If you type ls /dev and there are no devices that start with sd, you can check the status of the drives this way:		==If you type ls /dev and there are no devices that start with sd, you can check the status of the drives this way:==

	hpacucli		hpacucli
	=> ctrl all show config		=> ctrl all show config

	Here’s a great hpacucli reference:		Here’s a great hpacucli reference:
	http://www.google.com/url?q=http%3A%2F%2Fh20565.www2.hp.com%2Fportal%2Fsite%2Fhpsc%2Ftemplate.PAGE%2Fpublic%2Fpsi%2FmostViewedDisplay%3Fjavax.portlet.begCacheTok%3Dcom.vignette.cachetoken%26javax.portlet.endCacheTok%3Dcom.vignette.cachetoken%26javax.portlet.prp_efb5c0793523e51970c8fa22b053ce01%3Dwsrp-navigationalState%253DdocId%25253Demr_na-c03493210-1%25257CdocLocale%25253Den_US%26javax.portlet.tpst%3Defb5c0793523e51970c8fa22b053ce01%26sp4ts.oid%3D5177957%26ac.admitted%3D1392232572656.876444892.492883150&sa=D&sntz=1&usg=AFQjCNHzyW07LNs1-qCqC0ZUcnOhjJHjjA		http://www.google.com/url?q=http%3A%2%2Fh20565.www2.hp.com%2Fportal%2Fsite%2Fhpsc%2Ftemplate.PAGE%2Fpublic%2Fpsi%2FmostViewedDisplay%3Fjavax.portlet.begCacheTok%3Dcom.vignette.cachetoken%26javax.portlet.endCacheTok%3Dcom.vignette.cachetoken%26javax.portlet.prp_efb5c0793523e51970c8fa22b053ce01%3Dwsrp-navigationalState%253DdocId%25253Demr_na-c03493210-1%25257CdocLocale%25253Den_US%26javax.portlet.tpst%3Defb5c0793523e51970c8fa22b053ce01%26sp4ts.oid%3D5177957%26ac.admitted%3D1392232572656.876444892.492883150&sa=D&sntz=1&usg=AFQjCNHzyW07LNs1-qCqC0ZUcnOhjJHjjA

	~~To see a list of all pci devices~~

			==To see a list of all pci devices==
	lscpi -v \| more		lscpi -v \| more

			==To see the make and model of the machine (serial number, etc)==
			As root type:
			dmidecode
			Also iostat and iotop is great

	[[Category:Sysadmin]]		[[Category:Sysadmin]]

Frodo at 15:49, 13 March 2014

2014-03-13T15:49:44Z

← Older revision		Revision as of 15:49, 13 March 2014
Line 137:		Line 137:

	Here’s a great hpacucli reference:		Here’s a great hpacucli reference:
	~~hpacucli~~		http://www.google.com/url?q=http%3A%2F%2Fh20565.www2.hp.com%2Fportal%2Fsite%2Fhpsc%2Ftemplate.PAGE%2Fpublic%2Fpsi%2FmostViewedDisplay%3Fjavax.portlet.begCacheTok%3Dcom.vignette.cachetoken%26javax.portlet.endCacheTok%3Dcom.vignette.cachetoken%26javax.portlet.prp_efb5c0793523e51970c8fa22b053ce01%3Dwsrp-navigationalState%253DdocId%25253Demr_na-c03493210-1%25257CdocLocale%25253Den_US%26javax.portlet.tpst%3Defb5c0793523e51970c8fa22b053ce01%26sp4ts.oid%3D5177957%26ac.admitted%3D1392232572656.876444892.492883150&sa=D&sntz=1&usg=AFQjCNHzyW07LNs1-qCqC0ZUcnOhjJHjjA

	To see a list of all pci devices		To see a list of all pci devices

Frodo: Created page with "DEVICE MANAGEMENT/CHECKING To see if there was a disk failure on a machine type: cat /proc/mdstat You’ll see something that looks like this:

 [root@server ~]# cat..."

2014-03-13T15:48:56Z

Created page with "DEVICE MANAGEMENT/CHECKING To see if there was a disk failure on a machine type: cat /proc/mdstat You’ll see something that looks like this: <pre> [root@server ~]# cat..."

New page

DEVICE MANAGEMENT/CHECKING

To see if there was a disk failure on a machine type:

cat /proc/mdstat

You’ll see something that looks like this:

<pre>
[root@server ~]# cat /proc/mdstat
Personalities : [raidZ]
md0 : active raidZ sdb1[1] sda1[0]
128384 blocks [2/2] [UU]

md1 : active raidZ sdb2[1] sda2[0]
8385856 blocks [2/2] [UU]

md2 : active raidZ sdb3[1] sda3[0]
147773824 blocks [2/2] [UU]
</pre>
If there is a disk failure (pretend sdb1 failed) you would see something like this:
<pre>
[root@server ~]# cat /proc/mdstat
Personalities : [raidZ]
md0 : active raidZ sdb1[1] (F) sda1[0]
128384 blocks [2/2] [_U]

md1 : active raidZ sdb2[1] sda2[0]
8385856 blocks [2/2] [UU]

md2 : active raidZ sdb3[1] sda3[0]
147773824 blocks [2/2] [UU]
</pre>
So, there would be a “(F)” after the sdb1[1] and the [UU] would change to [_U]

Another way to check the state of any device is by using smartctl:

You can only check one device at a time, but it gives very extensive information. For example:

<pre>
smartctl -a /dev/sda

[root@server ~]# smartctl -a /dev/sda
smartctl 5.42 2011-10-20 r3458 [x86_64-linux-2.6.18-371.1.2.el5] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model: GB0160CAABV
Serial Number: 5RXAAWFP
Firmware Version: HPG1
User Capacity: 160,041,885,696 bytes [160 GB]
Sector Size: 512 bytes logical/physical
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 7
ATA Standard is: ATA/ATAPI-7 T13 1532D revision 4a
Local Time is: Wed Feb 12 10:38:15 2014 PST
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: ( 433) 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: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 54) 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: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
1 Raw_Read_Error_Rate 0x000f 100 253 006 Pre-fail Always - 0
3 Spin_Up_Time 0x0002 098 097 000 Old_age Always - 0
4 Start_Stop_Count 0x0033 100 100 020 Pre-fail Always - 54
5 Reallocated_Sector_Ct 0x0033 100 100 036 Pre-fail Always - 0
7 Seek_Error_Rate 0x000f 081 060 030 Pre-fail Always - 164061635
9 Power_On_Hours 0x0032 049 049 000 Old_age Always - 44875
10 Spin_Retry_Count 0x0013 100 100 097 Pre-fail Always - 0
12 Power_Cycle_Count 0x0033 100 100 020 Pre-fail Always - 54
184 End-to-End_Error 0x0032 100 253 000 Old_age Always - 0
187 Reported_Uncorrect 0x003a 100 100 051 Old_age Always - 0
189 High_Fly_Writes 0x0022 100 100 000 Old_age Always - 0
190 Airflow_Temperature_Cel 0x001a 074 064 000 Old_age Always - 26 (Min/Max 23/29)
194 Temperature_Celsius 0x0000 026 040 000 Old_age Offline - 26 (0 16 0 0 0)
195 Hardware_ECC_Recovered 0x0032 074 063 000 Old_age Always - 158710899
197 Current_Pending_Sector 0x0000 100 100 000 Old_age Offline - 0
198 Offline_Uncorrectable 0x0000 100 100 000 Old_age Offline - 0
199 UDMA_CRC_Error_Count 0x0000 200 200 000 Old_age Offline - 0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1

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):
</pre>
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.

If you type ls /dev and there are no devices that start with sd, you can check the status of the drives this way:

hpacucli
=> ctrl all show config

Here’s a great hpacucli reference:
hpacucli

To see a list of all pci devices

lscpi -v | more

[[Category:Sysadmin]]