systats

From: Geoff Rainey (geoffr_at_datacom.co.nz)
Date: 05/21/05

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    To: redhat-list@redhat.com
Date: Sat, 21 May 2005 17:49:28 +1200

    Hello,

    I am having trouble interpreting the output of the
    sar command with the -d flag. The DEV column major/
    minor node numbers do not seem to logically correlate
    to the device node files major/minor numbers:

    > sar -d

    17:27:33 DEV tps blks/s
    17:27:34 dev8-0 5.00 64.00
    17:27:34 dev8-1 384.00 89872.00
    17:27:34 dev8-2 0.00 0.00
    17:27:34 dev8-3 0.00 0.00
    17:27:34 dev8-4 0.00 0.00

    output of various ls -l on device node files:

    brw-rw---- 1 root disk 8, 0 Mar 20 2002 /dev/sda

    brw-rw---- 1 root disk 8, 16 Mar 20 2002 /dev/sdb

    brw-rw---- 1 root disk 8, 1 Mar 20 2002 /dev/sda1

    Is /dev/sda1 the output in dev8-1, or is this /dev/sdb and the
    minor number 16 gets truncated to 1?

    Cheers, 

    -- 
Geoff Rainey
Systems Consultant
Open Source Group
Datacom Systems Ltd.
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  • Next message: nileshemi redhat: "Re: Monitoring resources and network use"