[OpenAFS] Re: Backup ubik database

Mon, 20 May 2013 21:40:21 +0200

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2013-05-20 16:54 keltezéssel, Derrick Brashear írta:
>
>
>
> On Mon, May 20, 2013 at 10:50 AM, Andrew Deason 
> <adeason@sinenomine.net <mailto:adeason@sinenomine.net>> wrote:
>
>     On Mon, 20 May 2013 13:58:13 +0200
>     Gémes Géza <geza@kzsdabas.hu <mailto:geza@kzsdabas.hu>> wrote:
>
>     > What is the best way to backup the ubik database of pt and
>     vlservers?
>     > Does the server processes need to be shut down?
>
>     Currently the only way to safely copy/backup those databases is to
>     copy
>     the files while the server processes are either shut down, or stopped
>     (with SIGSTOP). You have to copy both the the .DB0 and .DBSYS
>     files (or
>     just copy everything in the db directory, which should probably
>     work no
>     matter how the databases are changed in the future).
>
>     Some people just copy the files while the servers are running,
>     though, I
>     think. If your ubik database doesn't change constantly at a high rate,
>     and you make several copies, it's very likely you'll save at least one
>     valid copy. It's also possible to add a dbserver just for the purposes
>     of backing up this data, if you want to go the "safe" route above, but
>     don't want to interrupt the dbservers that clients actually use.
>
>
> If you go this route, you can create a non-voting clone to do it, so 
> there's actually no
> chance of disruption.
>
>
>
> -- 
> Derrick
Thank you for both suggestions!

I'll implement both:

1. Add another clone
2. Already fetched gerrit 9700 and will build it tomorrow.

Cheers

Geza Gemes

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    <div class="moz-cite-prefix">2013-05-20 16:54 keltez&eacute;ssel, Derrick
      Brashear &iacute;rta:<br>
    </div>
    <blockquote
cite="mid:CAMHoRJgacTO_vch0i=oiJLwR7=41x_7C2oah_wdH078UgBuowA@mail.gmail.com"
      type="cite">
      <div dir="ltr"><br>
        <div class="gmail_extra"><br>
          <br>
          <div class="gmail_quote">On Mon, May 20, 2013 at 10:50 AM,
            Andrew Deason <span dir="ltr">&lt;<a moz-do-not-send="true"
                href="mailto:adeason@sinenomine.net" target="_blank">adeason@sinenomine.net</a>&gt;</span>
            wrote:<br>
            <blockquote class="gmail_quote" style="margin:0 0 0
              .8ex;border-left:1px #ccc solid;padding-left:1ex">On Mon,
              20 May 2013 13:58:13 +0200<br>
              G&eacute;mes G&eacute;za &lt;<a moz-do-not-send="true"
                href="mailto:geza@kzsdabas.hu">geza@kzsdabas.hu</a>&gt;
              wrote:<br>
              <br>
              &gt; What is the best way to backup the ubik database of
              pt and vlservers?<br>
              &gt; Does the server processes need to be shut down?<br>
              <br>
              Currently the only way to safely copy/backup those
              databases is to copy<br>
              the files while the server processes are either shut down,
              or stopped<br>
              (with SIGSTOP). You have to copy both the the .DB0 and
              .DBSYS files (or<br>
              just copy everything in the db directory, which should
              probably work no<br>
              matter how the databases are changed in the future).<br>
              <br>
              Some people just copy the files while the servers are
              running, though, I<br>
              think. If your ubik database doesn't change constantly at
              a high rate,<br>
              and you make several copies, it's very likely you'll save
              at least one<br>
              valid copy. It's also possible to add a dbserver just for
              the purposes<br>
              of backing up this data, if you want to go the "safe"
              route above, but<br>
              don't want to interrupt the dbservers that clients
              actually use.<br>
              <br>
            </blockquote>
            <div><br>
            </div>
            <div>If you go this route, you can create a non-voting clone
              to do it, so there's actually no<br>
              chance of disruption.&nbsp;</div>
          </div>
          <br>
          <br clear="all">
          <br>
          -- <br>
          Derrick
        </div>
      </div>
    </blockquote>
    Thank you for both suggestions!<br>
    <br>
    I'll implement both:<br>
    <br>
    1. Add another clone<br>
    2. Already fetched gerrit 9700 and will build it tomorrow.<br>
    <br>
    Cheers<br>
    <br>
    Geza Gemes<br>
    <br>
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