# [OmniOS-discuss] Ang: Ang: Ang: Ang: Re: LU read only and r/w for different hosts?

Kevin Swab Kevin.Swab at ColoState.EDU
Fri Jan 2 18:32:14 UTC 2015

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    sg_persist is part of the sg3_utils package.  Don't know if there's a
    repo out there with binaries, but it compiles easily on Omni:

    http://sg.danny.cz/sg/sg3_utils.html

    Kevin

    On 01/02/2015 11:28 AM, Johan Kragsterman wrote:
    >
    >
    > -----"OmniOS-discuss" <omnios-discuss-bounces at lists.omniti.com> skrev: -----
    > Till: Richard Elling <richard.elling at richardelling.com>
    > Från: Johan Kragsterman
    > Sänt av: "OmniOS-discuss"
    > Datum: 2015-01-02 18:53
    > Kopia: "omnios-discuss at lists.omniti.com" <omnios-discuss at lists.omniti.com>
    > Ärende: [OmniOS-discuss] Ang: Ang: Ang: Re: LU read only and r/w for	different	hosts?
    >
    > Hmmm again....a lot of hmmm's here today...
    >
    >
    > Been reading some more, and it looks like it is possible to reserve at LU level. I found a guy that uses an sg-persist command on solaris 11.1, but I don't find it in OmniOS. I did a pkg search, but perhaps I don't know what to search for...?
    >
    >
    >
    >
    > Me again...
    >
    >
    > Seems to be a good possibility that this can be configured using the sg3_utils?
    >
    > I've seen the reference to that before here on list, but I don't find any pkg...
    >
    > Hint's???
    >
    >
    > Rgrds Johan
    >
    >
    >
    >
    >
    > -----"OmniOS-discuss" <omnios-discuss-bounces at lists.omniti.com> skrev: -----
    > Till: Richard Elling <richard.elling at richardelling.com>
    > Från: Johan Kragsterman
    > Sänt av: "OmniOS-discuss"
    > Datum: 2015-01-02 17:53
    > Kopia: "omnios-discuss at lists.omniti.com" <omnios-discuss at lists.omniti.com>
    > Ärende: [OmniOS-discuss] Ang: Ang: Re: LU read only and r/w for different	hosts?
    >
    >
    > -----"OmniOS-discuss" <omnios-discuss-bounces at lists.omniti.com> skrev: -----
    > Till: Richard Elling <richard.elling at richardelling.com>
    > Från: Johan Kragsterman
    > Sänt av: "OmniOS-discuss"
    > Datum: 2015-01-02 17:38
    > Kopia: "omnios-discuss at lists.omniti.com" <omnios-discuss at lists.omniti.com>
    > Ärende: [OmniOS-discuss] Ang: Re: LU read only and r/w for different hosts?
    >
    >
    > -----Richard Elling <richard.elling at richardelling.com> skrev: -----
    > Till: Johan Kragsterman <johan.kragsterman at capvert.se>
    > Från: Richard Elling <richard.elling at richardelling.com>
    > Datum: 2015-01-02 16:03
    > Kopia: "omnios-discuss at lists.omniti.com" <omnios-discuss at lists.omniti.com>
    > Ärende: Re: [OmniOS-discuss] LU read only and r/w for different hosts?
    >
    > It has been a while since using comstar, but the SCSI protocol has
    > WERO group reservations. Would that suffice?
    >
    >  -- richard
    >
    >
    >
    > Yeah, I believe so....question is how I can manage it? It doesn't seem to be a part of stmfadm, so I need to do it elsewhere, if possible...so you, or someone else, got some ideas...?
    >
    >
    > Rgrds Johan
    >
    >
    >
    > Hmm, been reading up a little on the PR and WERO....it seems to be registering on DEVICE level, not on LU level, huh? Or do I misinterpret something here...?
    >
    >
    >
    >
    >
    >
    >> On Jan 2, 2015, at 12:18 AM, Johan Kragsterman <johan.kragsterman at capvert.se> wrote:
    >>
    >> Hi!
    >>
    >>
    >> I've been thinking about this for a while, and haven't figured out a solution.
    >>
    >> I'd like to have a possibility to set LU read only for some hosts, but r/w to others, for the same LU. There are possibilities to set read only, or r/w, on a LU, but that property is valid for all hosts, it is not(afaik) possible to choose which hosts are going to get read only, and which are going to get r/w.
    >>
    >> This is an access controll operation, and as such, imho, should be controlled by comstar. It is the responsability of the view to handle this, but I haven't seen this anywhere in the comstar/stmf configuration posibilities.
    >>
    >> Are there someone on this list that can shed some light on this?
    >>
    >>
    >> Best regards from/Med vänliga hälsningar från
    >>
    >> Johan Kragsterman
    >>
    >> Capvert
    >>
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    --
    -------------------------------------------------------------------
    Kevin Swab                          UNIX Systems Administrator
    ACNS                                Colorado State University
    Phone: (970)491-6572                Email: Kevin.Swab at ColoState.EDU
    GPG Fingerprint: 7026 3F66 A970 67BD 6F17  8EB8 8A7D 142F 2392 791C

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