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    <p>I am not sure about that. My second pull request, against
      zm-launcher, takes care of the permission issue. To summarize: The
      gc.log (and with rotation gc.log.0.current) is created with the
      owner root:root because the JVM will only later drop privileges to
      zimbra:zimbra. Some code in zmmailboxdmgr will fix this up but
      only for gc.log. It looks like it works with the wrong permissions
      as well but I didn't do much testing and thus either the
      permission issue is not an issue at all or it might break your
      setup in interesting ways.</p>
    <p>Fortunately it isn't hard to build a patched zmmailboxdmgr. Just
      checkout the zm-launcher repo with my patch applied (until it is
      merged you can find it in the branch
      bugfix/bz-98011-use-gc-log-file-rotation in
      <a class="moz-txt-link-freetext" href="https://github.com/mss/zm-launcher">https://github.com/mss/zm-launcher</a>) and build the zmmailboxdmgr:</p>
    <p><tt>git clone <a class="moz-txt-link-freetext" href="https://github.com/mss/zm-launcher.git">https://github.com/mss/zm-launcher.git</a><br>
        cd zm-launcher<br>
        git checkout </tt><tt>bugfix/bz-98011-use-gc-log-file-rotation<br>
        make all </tt><span class="pl-s"><tt>JAVA_BINARY=/opt/zimbra/common/bin/java</tt><span
          class="pl-pds"><br>
        </span></span></p>
    <p>This will create the file build/zmmailboxdmgr which you can then
      place on your system.</p>
    <p>YMMV and if anything breaks it isn't my fault and you may keep
      the pieces.</p>
    <p>Cheers,</p>
    <p>Malte<br>
      <span class="pl-s"><span class="pl-pds"></span></span></p>
    <br>
    <div class="moz-cite-prefix">On 03.10.2017 00:04, L. Mark Stone
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:1083433271.2010576.1506981844058.JavaMail.zimbra@reliablenetworks.com">
      <div style="font-family: arial, helvetica, sans-serif; font-size:
        12pt; color: #000000">
        <div>Thanks Malte; so no permissions changes needed on existing
          systems after updating the localconfig variable?</div>
        <div><br data-mce-bogus="1">
        </div>
        <div>All the best,</div>
        <div>Mark</div>
        <div data-marker="__SIG_PRE__">
          <div>___________________________________________________________</div>
          <div><strong>A Message From...  L. Mark Stone, General Manager</strong></div>
          <div><strong></strong><br>
          </div>
          <div><img src="cid:part1.C12BE236.539E427C@msquadrat.de"
data-mce-src="https://zmail.otelcotel.com/home/mark.stone@reliablenetworks.com/Briefcase/RelNet_Logo_300x60.png"
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          <div>
            <div><span size="2" style="font-size: small;"
                data-mce-style="font-size: small;"><em>"Uptime.  All the
                  time." </em><span size="3" style="font-size: medium;"
                  data-mce-style="font-size: medium;">®    <span
                    color="#999999" size="2" style="color: #999999;
                    font-size: small;" data-mce-style="color: #999999;
                    font-size: small;"><a
                      href="http://www.reliablenetworks.com"
                      data-mce-href="http://www.reliablenetworks.com"
                      moz-do-not-send="true">www.reliablenetworks.com</a></span></span></span></div>
            <p style="margin: 0px;" data-mce-style="margin: 0px;"><br>
            </p>
            <p style="margin: 0px;" data-mce-style="margin: 0px;"><i
                style="color: #ff6600; background-color: #ffffff;
                font-size: small; text-decoration: underline;"
                data-mce-style="color: #ff6600; background-color:
                #ffffff; font-size: small; text-decoration: underline;">Fifteen
                Years In Business!  2003 - 2017!</i></p>
            <p style="margin: 0px;" data-mce-style="margin: 0px;"><span
                size="2" style="font-size: small;"
                data-mce-style="font-size: small;"><br>
              </span><span size="2" style="color: #333333; font-size:
                small;" data-mce-style="color: #333333; font-size:
                small;"><span size="2" style="font-size: small;"
                  data-mce-style="font-size: small;">477 Congress
                  Street, Suite 812</span>   |   Portland, ME 04101   |
                  (<a
                  onclick="window.top.Com_Zimbra_Phone.unsetOnbeforeunload()"
                  href="callto:+1207%29%20772-5678"
                  data-mce-href="callto:+1207%29%20772-5678"
                  moz-do-not-send="true">207) 772-5678</a></span></p>
            <div><span size="2" style="font-size: small;"
                data-mce-style="font-size: small;"> </span></div>
            <div><span size="2" style="font-size: small;"
                data-mce-style="font-size: small;"><span size="2"
                  style="font-size: small;" data-mce-style="font-size:
                  small;"><span color="#ff6600" style="color: #ff6600;"
                    data-mce-style="color: #ff6600;">Citrix
                    XenApp/XenDesktop Hosting</span>  |  <span
                    color="#ff6600" style="color: #ff6600;"
                    data-mce-style="color: #ff6600;">SOC 2 Type II Audit
                  </span><br>
                  <span color="#ff6600" style="color: #ff6600;"
                    data-mce-style="color: #ff6600;"><i>Zimbra</i></span><span
                    color="#ff6600" style="color: #ff6600;"
                    data-mce-style="color: #ff6600;"> Groupware</span> 
                  |  <span color="#ff6600" style="color: #ff6600;"
                    data-mce-style="color: #ff6600;">Mission-Critical Cl</span><span
                    color="#ff6600" style="color: #ff6600;"
                    data-mce-style="color: #ff6600;">oud Hosting  </span><br>
                </span></span></div>
            <div><br>
            </div>
            <div><span size="2" style="font-size: small;"
                data-mce-style="font-size: small;">This email may
                contain information that is privileged and confidential.<br>
                If you suspect that you were not intended to receive it,
                please delete<br>
                it and notify us as soon as possible. Thank you.</span></div>
          </div>
        </div>
        <br>
        <hr id="zwchr" data-marker="__DIVIDER__">
        <div data-marker="__HEADERS__">
          <blockquote style="border-left: 2px solid #1010FF;
            margin-left: 5px; padding-left: 5px; color: #000;
            font-weight: normal; font-style: normal; text-decoration:
            none; font-family: Helvetica,Arial,sans-serif; font-size:
            12pt;" data-mce-style="border-left: 2px solid #1010FF;
            margin-left: 5px; padding-left: 5px; color: #000;
            font-weight: normal; font-style: normal; text-decoration:
            none; font-family: Helvetica,Arial,sans-serif; font-size:
            12pt;"><b>From: </b>"Malte S. Stretz"
            <a class="moz-txt-link-rfc2396E" href="mailto:mss@msquadrat.de"><mss@msquadrat.de></a><br>
            <b>To: </b>"L. Mark Stone"
            <a class="moz-txt-link-rfc2396E" href="mailto:lmark.stone@reliablenetworks.com"><lmark.stone@reliablenetworks.com></a><br>
            <b>Cc: </b>"users" <a class="moz-txt-link-rfc2396E" href="mailto:users@lists.zetalliance.org"><users@lists.zetalliance.org></a><br>
            <b>Sent: </b>Monday, October 2, 2017 5:41:04 PM<br>
            <b>Subject: </b>Re: [Users] Interesting Bug/RFE To Consider
            Voting For<br>
          </blockquote>
        </div>
        <div data-marker="__QUOTED_TEXT__">
          <blockquote style="border-left: 2px solid #1010FF;
            margin-left: 5px; padding-left: 5px; color: #000;
            font-weight: normal; font-style: normal; text-decoration:
            none; font-family: Helvetica,Arial,sans-serif; font-size:
            12pt;" data-mce-style="border-left: 2px solid #1010FF;
            margin-left: 5px; padding-left: 5px; color: #000;
            font-weight: normal; font-style: normal; text-decoration:
            none; font-family: Helvetica,Arial,sans-serif; font-size:
            12pt;">
            <p>Hi Mark,</p>
            <p>if the pull requests are applied, they will find their
              way into NE at some point.</p>
            <p>To change the settings on existing systems, the following
              call followed by a restart of the mailbox service should
              do the trick:</p>
            <p><tt>zmlocalconfig -e
                "mailboxd_java_options=$(zmlocalconfig -m nokey
                mailboxd_java_options | sed -e
                's/-UseGCLogFileRotation/+UseGCLogFileRotation/')"</tt></p>
            <p>Cheers,</p>
            <p>Malte<br>
            </p>
            <br>
            <div class="moz-cite-prefix">On 02.10.2017 23:31, L. Mark
              Stone wrote:<br>
            </div>
            <blockquote
cite="mid:267604313.2009664.1506979879319.JavaMail.zimbra@reliablenetworks.com">
              <div style="font-family: arial, helvetica, sans-serif;
                font-size: 12pt; color: #000000;"
                data-mce-style="font-family: arial, helvetica,
                sans-serif; font-size: 12pt; color: #000000;">
                <div>Awesome!</div>
                <div><br>
                </div>
                <div>Hopefully Zimbra will incorporate this into Network
                  Edition, with a section in the Release Notes
                  describing how to implement when upgrading existing
                  systems.</div>
                <div><br>
                </div>
                <div>Thanks so much!</div>
                <div><br>
                </div>
                <div>All the best</div>
                <div>Mark</div>
                <div>
                  <div>___________________________________________________________</div>
                  <div><strong>A Message From...  L. Mark Stone, General
                      Manager</strong></div>
                  <div><strong></strong><br>
                  </div>
                  <div><img
                      src="cid:part1.C12BE236.539E427C@msquadrat.de"
                      class=""></div>
                  <div>
                    <div><span style="font-size: small;"
                        data-mce-style="font-size: small;"><em>"Uptime.
                           All the time." </em><span style="font-size:
                          medium;" data-mce-style="font-size: medium;">®   
                          <span style="color: #999999; font-size:
                            small;" data-mce-style="color: #999999;
                            font-size: small;"><a
                              href="http://www.reliablenetworks.com"
                              target="_blank" moz-do-not-send="true">www.reliablenetworks.com</a></span></span></span></div>
                    <p style="margin: 0px;" data-mce-style="margin:
                      0px;"><br>
                    </p>
                    <p style="margin: 0px;" data-mce-style="margin:
                      0px;"><i style="color: #ff6600; background-color:
                        #ffffff; font-size: small; text-decoration:
                        underline;" data-mce-style="color: #ff6600;
                        background-color: #ffffff; font-size: small;
                        text-decoration: underline;">Fifteen Years In
                        Business!  2003 - 2017!</i></p>
                    <p style="margin: 0px;" data-mce-style="margin:
                      0px;"><span style="font-size: small;"
                        data-mce-style="font-size: small;"><br>
                      </span><span style="color: #333333; font-size:
                        small;" data-mce-style="color: #333333;
                        font-size: small;"><span style="font-size:
                          small;" data-mce-style="font-size: small;">477
                          Congress Street, Suite 812</span>   |  
                        Portland, ME 04101   |   (<a
                          href="callto:+1207%29%20772-5678"
                          target="_blank" moz-do-not-send="true">207)
                          772-5678</a></span></p>
                    <div><span style="font-size: small;"
                        data-mce-style="font-size: small;"> </span></div>
                    <div><span style="font-size: small;"
                        data-mce-style="font-size: small;"><span
                          style="font-size: small;"
                          data-mce-style="font-size: small;"><span
                            style="color: #ff6600;"
                            data-mce-style="color: #ff6600;">Citrix
                            XenApp/XenDesktop Hosting</span>  |  <span
                            style="color: #ff6600;"
                            data-mce-style="color: #ff6600;">SOC 2 Type
                            II Audit </span><br>
                          <span style="color: #ff6600;"
                            data-mce-style="color: #ff6600;"><i>Zimbra</i></span><span
                            style="color: #ff6600;"
                            data-mce-style="color: #ff6600;"> Groupware</span> 
                          |  <span style="color: #ff6600;"
                            data-mce-style="color: #ff6600;">Mission-Critical
                            Cl</span><span style="color: #ff6600;"
                            data-mce-style="color: #ff6600;">oud
                            Hosting  </span><br>
                        </span></span></div>
                    <div><br>
                    </div>
                    <div><span style="font-size: small;"
                        data-mce-style="font-size: small;">This email
                        may contain information that is privileged and
                        confidential.<br>
                        If you suspect that you were not intended to
                        receive it, please delete<br>
                        it and notify us as soon as possible. Thank you.</span></div>
                  </div>
                </div>
                <br>
                <hr id="zwchr">
                <div>
                  <blockquote style="border-left: 2px solid #1010FF;
                    margin-left: 5px; padding-left: 5px; color: #000;
                    font-weight: normal; font-style: normal;
                    text-decoration: none; font-family:
                    Helvetica,Arial,sans-serif; font-size: 12pt;"
                    data-mce-style="border-left: 2px solid #1010FF;
                    margin-left: 5px; padding-left: 5px; color: #000;
                    font-weight: normal; font-style: normal;
                    text-decoration: none; font-family:
                    Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From:
                    </b>"Malte S. Stretz" <a
                      class="moz-txt-link-rfc2396E"
                      href="mailto:mss@msquadrat.de" target="_blank"
                      moz-do-not-send="true"><mss@msquadrat.de></a><br>
                    <b>To: </b>"L. Mark Stone" <a
                      class="moz-txt-link-rfc2396E"
                      href="mailto:lmark.stone@reliablenetworks.com"
                      target="_blank" moz-do-not-send="true"><lmark.stone@reliablenetworks.com></a><br>
                    <b>Cc: </b>"users" <a
                      class="moz-txt-link-rfc2396E"
                      href="mailto:users@lists.zetalliance.org"
                      target="_blank" moz-do-not-send="true"><users@lists.zetalliance.org></a><br>
                    <b>Sent: </b>Monday, October 2, 2017 5:14:43 PM<br>
                    <b>Subject: </b>Re: [Users] Interesting Bug/RFE To
                    Consider Voting For<br>
                  </blockquote>
                </div>
                <div>
                  <blockquote style="border-left: 2px solid #1010FF;
                    margin-left: 5px; padding-left: 5px; color: #000;
                    font-weight: normal; font-style: normal;
                    text-decoration: none; font-family:
                    Helvetica,Arial,sans-serif; font-size: 12pt;"
                    data-mce-style="border-left: 2px solid #1010FF;
                    margin-left: 5px; padding-left: 5px; color: #000;
                    font-weight: normal; font-style: normal;
                    text-decoration: none; font-family:
                    Helvetica,Arial,sans-serif; font-size: 12pt;">
                    <p>Hi Mark,</p>
                    <p>thanks for the heads up. Compared to the other
                      log files, the sizes the gc.log can grow to is
                      most the time still manageable but it can be
                      surprising. Fortunately is this one of the smaller
                      changes which are simple enough to fix. I opened
                      two related pull requests to make the rotation the
                      default and fix up the permissions if done so:</p>
                    <ul>
                      <li><a class="moz-txt-link-freetext"
                          href="https://github.com/Zimbra/zm-mailbox/pull/389"
                          target="_blank" moz-do-not-send="true">https://github.com/Zimbra/zm-mailbox/pull/389</a></li>
                      <li><a class="moz-txt-link-freetext"
                          href="https://github.com/Zimbra/zm-launcher/pull/2"
                          target="_blank" moz-do-not-send="true">https://github.com/Zimbra/zm-launcher/pull/2</a></li>
                    </ul>
                    <p>These won't change the settings on existing
                      systems but will apply on newly installed ones.<br>
                    </p>
                    <p>Cheers,</p>
                    <p>Malte<br>
                    </p>
                    <br>
                    <div class="moz-cite-prefix">On 02.10.2017 20:38, L.
                      Mark Stone wrote:<br>
                    </div>
                    <blockquote
cite="mid:1325600908.1995944.1506969495432.JavaMail.zimbra@reliablenetworks.com">
                      <div style="font-family: arial, helvetica,
                        sans-serif; font-size: 12pt; color: #000000;"
                        data-mce-style="font-family: arial, helvetica,
                        sans-serif; font-size: 12pt; color: #000000;">
                        <div><a class="moz-txt-link-freetext"
                            href="https://bugzilla.zimbra.com/show_bug.cgi?id=98011"
                            target="_blank" moz-do-not-send="true">https://bugzilla.zimbra.com/show_bug.cgi?id=98011</a></div>
                        <div><br>
                        </div>
                        <div>Malte S. filed this bug/RFE in 2015.  We
                          happened to look at an 8.6 mailbox server
                          today and noted the gc.log was more than
                          225MB; the server had been running for only
                          two months.</div>
                        <div><br>
                        </div>
                        <div>Please consider voting for this bug,
                          especially if you run a busy server(s) that
                          is(are) going to be doing a lot of Java
                          garbage collection activity.  If you have
                          already made the changes, please comment on
                          the Bugzilla to indicate if Java is able to
                          manage its own log file rotation.</div>
                        <div><br>
                        </div>
                        <div>Thanks,</div>
                        <div>Mark</div>
                        <div>
                          <div>___________________________________________________________</div>
                          <div><strong>A Message From...  L. Mark Stone,
                              General Manager</strong></div>
                          <div><strong></strong><br>
                          </div>
                          <div><img
                              src="cid:part1.C12BE236.539E427C@msquadrat.de"
                              class=""></div>
                          <div>
                            <div><span style="font-size: small;"
                                data-mce-style="font-size: small;"><em>"Uptime.
                                   All the time." </em><span
                                  style="font-size: medium;"
                                  data-mce-style="font-size: medium;">®   
                                  <span style="color: #999999;
                                    font-size: small;"
                                    data-mce-style="color: #999999;
                                    font-size: small;"><a
                                      href="http://www.reliablenetworks.com"
                                      target="_blank"
                                      moz-do-not-send="true">www.reliablenetworks.com</a></span></span></span></div>
                            <p style="margin: 0px;"
                              data-mce-style="margin: 0px;"><br>
                            </p>
                            <p style="margin: 0px;"
                              data-mce-style="margin: 0px;"><i
                                style="color: #ff6600; background-color:
                                #ffffff; font-size: small;
                                text-decoration: underline;"
                                data-mce-style="color: #ff6600;
                                background-color: #ffffff; font-size:
                                small; text-decoration: underline;">Fifteen
                                Years In Business!  2003 - 2017!</i></p>
                            <p style="margin: 0px;"
                              data-mce-style="margin: 0px;"><span
                                style="font-size: small;"
                                data-mce-style="font-size: small;"><br>
                              </span><span style="color: #333333;
                                font-size: small;"
                                data-mce-style="color: #333333;
                                font-size: small;"><span
                                  style="font-size: small;"
                                  data-mce-style="font-size: small;">477
                                  Congress Street, Suite 812</span>   |
                                  Portland, ME 04101   |   (<a
                                  href="callto:+1207%29%20772-5678"
                                  target="_blank" moz-do-not-send="true">207)
                                  772-5678</a></span></p>
                            <div><span style="font-size: small;"
                                data-mce-style="font-size: small;"> </span></div>
                            <div><span style="font-size: small;"
                                data-mce-style="font-size: small;"><span
                                  style="font-size: small;"
                                  data-mce-style="font-size: small;"><span
                                    style="color: #ff6600;"
                                    data-mce-style="color: #ff6600;">Citrix
                                    XenApp/XenDesktop Hosting</span>  | 
                                  <span style="color: #ff6600;"
                                    data-mce-style="color: #ff6600;">SOC
                                    2 Type II Audit </span><br>
                                  <span style="color: #ff6600;"
                                    data-mce-style="color: #ff6600;"><i>Zimbra</i></span><span
                                    style="color: #ff6600;"
                                    data-mce-style="color: #ff6600;">
                                    Groupware</span>  |  <span
                                    style="color: #ff6600;"
                                    data-mce-style="color: #ff6600;">Mission-Critical
                                    Cl</span><span style="color:
                                    #ff6600;" data-mce-style="color:
                                    #ff6600;">oud Hosting  </span><br>
                                </span></span></div>
                            <div><br>
                            </div>
                            <div><span style="font-size: small;"
                                data-mce-style="font-size: small;">This
                                email may contain information that is
                                privileged and confidential.<br>
                                If you suspect that you were not
                                intended to receive it, please delete<br>
                                it and notify us as soon as possible.
                                Thank you.</span></div>
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