Linux system information commands

             

Now some disk related commands for troubleshooting.

10.    hdparm -tT /dev/sda :This command performs a read speed test on disk sda.

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[root@kalwa2 ~]# hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 11192 MB in 2.00 seconds = 5600.18 MB/sec
Timing buffered disk reads: 248 MB in 3.06 seconds = 81.04 MB/sec

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11.      badblocks -s /dev/sda :This command performs test for unreadable blocks on disk sda.

————————————————————–OUTPUT—————————————————

[root@kalwa2 ~]# badblocks -s /dev/sda
Checking for bad blocks (read-only test): done
[root@kalwa2 ~]#

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