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  • 1.  IN BAND in lslv -l

    Posted Fri September 17, 2010 03:00 AM

    Originally posted by: SystemAdmin


    Hi All,

    I am confused why it's saying IN BAND is 100% for hdisk0 and it's 0% for hdisk1.

    What is mean by IN BAND?

    :@:/root: lslv -l local
    local:/usr/local
    PV COPIES IN BAND DISTRIBUTION
    hdisk0 025:000:000 100% 000:025:000:000:000
    hdisk1 025:000:000 0% 000:000:025:000:000
    #AIX-Forum


  • 2.  Re: IN BAND in lslv -l

    Posted Thu September 23, 2010 04:51 PM

    Originally posted by: gtyoung


    In band refers to the placement of the LV on the disk and it's relation to the Intra Policy (edge, inner, etc). In band percentage indicates how well LVM has done in accommodating the intraphysical volume placement policy.
    #AIX-Forum


  • 3.  Re: IN BAND in lslv -l

    Posted Tue September 28, 2010 07:31 AM

    Originally posted by: SystemAdmin


    Will it impact performance ?
    #AIX-Forum


  • 4.  Re: IN BAND in lslv -l

    Posted Tue September 28, 2010 04:13 PM

    Originally posted by: dukessd


    "Will it impact performance ?"

    Currently - unlikely because copies are in adjacent bands.
    In the future - if they stay within the same bands - also unlikely.
    In the future - if they start occupying more bands - possibly but the difference will probably be very small.

    Is this a rootvg on two disks of different sizes?

    What should you do about it?
    Nothing - Unless you see I/O backing up for either disk then don't worry about it.
    If you see I/O backing up for either disk then post again for more advice or:
    Re-mirror rootvg - remove hdisk1 from rootvg and then add it again and re-mirror to straighten out the distribution on hdisk1.

    If you go for the re-mirror then don't forget quorum, bosboot, bootlist and all that stuff.
    #AIX-Forum


  • 5.  Re: IN BAND in lslv -l

    Posted Thu September 30, 2010 05:44 AM

    Originally posted by: SystemAdmin


    Many Thanks :)
    #AIX-Forum