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<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">I suppose that when you lock the data on the primary node and wait until all data is synchronized then you can disconnect the drbd synchronization and make the secondary node primary, compress the
data and back it up.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Then make the backup node secondary again and connect it with the primary server. Then all changes from the primary are synchronized to the secondary node.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">But I have never used drbd that way.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Best regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">Maurits van de Lande<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Van:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:drbd-user-bounces@lists.linbit.com">drbd-user-bounces@lists.linbit.com</a> [<a href="mailto:drbd-user-bounces@lists.linbit.com">mailto:drbd-user-bounces@lists.linbit.com</a>]
<b>Namens </b>Brian O Mahony<br>
<b>Verzonden:</b> vrijdag 17 februari 2012 14:19<br>
<b>Aan:</b> <a href="mailto:drbd-user@lists.linbit.com">drbd-user@lists.linbit.com</a><br>
<b>Onderwerp:</b> [DRBD-user] Documentation download & another DRBD question<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-IE">Hey folks<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE">I am quite new to DRBD, and just had two quick questions, if someone could help it would be great.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE">#1 Is there a downloadable version of the documentation. I don’t get very much time to read, so was planning on reading it all offline….<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE">#2 One of the scenarios that I was thinking of using DRBD with is as follows. Please let me know if this would theoretically work, and whether it is ugly, or even just plain wrong.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE">I have a server with about 500GB of data on its own filesystem. Currently, nightly, we lock this data, use tar to copy it it another volume, unlock it, then use gzip on the copy to compress, and then copy this to a second
server for backup. The reason for the multi-step process, is we want to keep data lock time a minimum.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE">What I was thinking of doing is using DRBD to mirror this volume to the second server. At backup time, on the second system, we stop the process, or stop the packet shipping or likewise, so there will be no updates, lock
the data, run tar/gz, unlock, and restart the synchronization.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE">Is this possible. IE can DRBD deal with a system being unavailable for a few hours, store changes (or do checksums etc) and then replay those changes when the second system comes back online?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE">Anyways thanks in advance for the replies<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE">B<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IE" style="font-size:12.0pt;font-family:"Courier New""><br>
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