How to troubleshoot disk related issues in aix?
If the disk is local disk, then please execute the below commands to troubleshoot the issue.
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Commands
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Explanation
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# lspv
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To list the disk details
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# lsvg -p <vg_name>
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To check the vg whether it is in missing state
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# varyonvg <vg_name>
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To bring disk from missing to active
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# errpt
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To check the error details
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# errpt -N hdiskX
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To check the error details for the particular disk.
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# errpt -aj <identifier>
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To check the detailed error output of disk
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# lquerypv -h /dev/hdiskX
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The output should not be all zero
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if the issues found, then log a case with IBM and replace the disk.
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If the disk is virtual which is provided by VIOS , then please execute the below commands to troubleshoot the issue.
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Commands
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Explanation
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# lspv
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To list the disk details
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# lsdev -Cc disk
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To check whether the disk is local,virtual
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# errpt
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To check the error details
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# errpt -N hdiskX
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To check the error details for the particular disk.
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# lspath
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To check paths that is is single/dual
path
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# lscfg -vpl hdiskX
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To get the C# of the disk (example: C110)
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Execute below cmd on VIO
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# lsdev -slots|grep -i CXX
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To identify the vhost details corresponding to the disk on the
lpar
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# lsmap -all|grep -p vhostX
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To get the disk details corresponding to the disk on the lpar
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# errpt
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To check the error details (execute on aix prompt)
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# errpt -N hdiskX
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To check error details for particular disk.(execute on aix
prompt)
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# errpt -aj <identifier>
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To check the detailed error output of disk. (execute on aix
prompt)
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if the issues found, then log a case with IBM and replace the disk.
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If the disk is provided by any other storage, then please execute the below commands to troubleshoot the issue.
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Commands
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Explanation
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# lsdev -Cc
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To check the disk is local/virtual/storage
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# lsdev -Cl hdiskX -F parent
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To identify the parent of the hard disk
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# lsdev -Cl fscsiX -F parent
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To identify the fcs details.
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# fcstat fcsX
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To check the FC card details
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# fcstat fcsX|awk '/Transmit/,/Words/'
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if the data transfer and send is not changing
-then we have connectivity problem
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if everything seems to be normal up on fcs, the problem should be on the storage side.. pass it to storage team.
