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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If your distro supports it you should think about using ext4 vs ext3. Much more efficient in many ways.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You don’t say what distro you’re on.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Jeffrey C. Lightner</span></i><i><span style="font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Sr. UNIX Administrator</span></i><i><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></i></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">DS Waters of America, Inc.</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">5660 New Northside Drive NW</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Suite
<i>250</i></span><span style="font-size:11.0pt;color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PT" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Atlanta, GA 30328</span><span lang="PT" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PT" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"> <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PT" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">P:
<i>678-486-3516<o:p></o:p></i></span></p>
<p class="MsoNormal"><span lang="PT" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">C:
<i>678-772-0018</i></span><span lang="PT" style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PT" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">F:
<i>678-460-3603</i></span><span lang="PT" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="PT" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">E:
<i>jlightner@water.com</i><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> ale-bounces@ale.org [mailto:ale-bounces@ale.org]
<b>On Behalf Of </b>Brian Mathis<br>
<b>Sent:</b> Wednesday, February 12, 2014 11:49 AM<br>
<b>To:</b> Atlanta Linux Enthusiasts<br>
<b>Subject:</b> Re: [ale] backup/restore mail from USB external drive<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Tue, Feb 11, 2014 at 6:15 PM, John Heim <<a href="mailto:john@johnheim.com" target="_blank">john@johnheim.com</a>> wrote:<o:p></o:p></p>
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So we have a failing RAID5 array on our mail server. I rsynced the mail to an external USB drive (formatted ext3, thanks) It looks like I am going to have to completely re-install. I want the outage to be as short as possible. I am thinking this:<br>
<br>
1. Repeat the rsync with the system up so as to not inconvenience users. There will be a lot of "file changed as we read it" kind of errors.<br>
2. Shutdown the mail programs.<br>
3. Run rsync again. This time there shouldn't be any errors.<br>
4. Install the new disks, reformat, re-install.<br>
5. Copy the mail files back.<br>
<br>
Any suggestions as to the most efficient way to do step #5? There would be no point in using rsync because the time it spends checking for changed files would be wasted.<br>
<span style="color:#888888"><br>
John Heim</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">'rsync' is still a good option to copy files back. It does not do a full check of files unless they already exist on the destination side, and even then it checks the date and filesize before doing a full checksum. If you use the options,
you can preserve timestamps, view progress, and easily stop/restart the copy if needed. I'd use these options: -av --progress --partial. When copying between local disks, it's just a version of 'cp' that gives you a lot more options. Also, I'd recommend
running this inside of a 'screen' or 'tmux' session so you can detach and leave it running, and/or protect against the session getting dropped from the network.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">As far as step 5 goes, do you have enough physical space to add the new drives next to the old ones? Then you could make a partition for the user data and stage it directly on the new drives.<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Incidentally, the point of a RAID is to be able to replace failing drives without having to go through this process. Is there any reason why you can't just replace the failing drive and rebuild the existing
RAID to it?<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
P.S. RAID is not a backup and you should always have some kind of backup job running to external media regardless of the health of the RAID.<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"MS Mincho"">❧</span> Brian Mathis<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"MS Mincho"">❧</span> Brian Mathis<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><o:p> </o:p></p>
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<p class="MsoNormal">On Tue, Feb 11, 2014 at 6:15 PM, John Heim <<a href="mailto:john@johnheim.com" target="_blank">john@johnheim.com</a>> wrote:<o:p></o:p></p>
<p class="MsoNormal"><br>
So we have a failing RAID5 array on our mail server. I rsynced the mail to an external USB drive (formatted ext3, thanks) It looks like I am going to have to completely re-install. I want the outage to be as short as possible. I am thinking this:<br>
<br>
1. Repeat the rsync with the system up so as to not inconvenience users. There will be a lot of "file changed as we read it" kind of errors.<br>
2. Shutdown the mail programs.<br>
3. Run rsync again. This time there shouldn't be any errors.<br>
4. Install the new disks, reformat, re-install.<br>
5. Copy the mail files back.<br>
<br>
Any suggestions as to the most efficient way to do step #5? There would be no point in using rsync because the time it spends checking for changed files would be wasted.<br>
<br>
<br>
<br>
an<span style="color:#888888"><br>
<br>
<span class="hoenzb">-- </span><br>
<span class="hoenzb">John Heim</span><br>
<span class="hoenzb">email: </span></span><a href="mailto:john@johnheim.com" target="_blank">john@johnheim.com</a><span class="hoenzb"><span style="color:#888888"> skype: john.g.heim</span></span><span style="color:#888888"><br>
<br>
<span class="hoenzb"></span></span></p>
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<p class="MsoNormal"><span style="color:#888888"><span class="hoenzb">_______________________________________________</span><br>
<span class="hoenzb">Ale mailing list</span><br>
</span><a href="mailto:Ale@ale.org" target="_blank">Ale@ale.org</a><span style="color:#888888"><br>
</span><a href="http://mail.ale.org/mailman/listinfo/ale" target="_blank">http://mail.ale.org/mailman/listinfo/ale</a><span style="color:#888888"><br>
<span class="hoenzb">See JOBS, ANNOUNCE and SCHOOLS lists at</span><br>
</span><a href="http://mail.ale.org/mailman/listinfo" target="_blank">http://mail.ale.org/mailman/listinfo</a><o:p></o:p></p>
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<p class="f758a8b8-08bf-4bab-8d22-45dba9e71175"><font face="Arial"><font color="fuchsia"><font style="FONT-FAMILY: Arial; FONT-SIZE: 10pt" size="2"></font></font></font> </p>
<p class="f758a8b8-08bf-4bab-8d22-45dba9e71175"> </p>
<p class="f758a8b8-08bf-4bab-8d22-45dba9e71175"><font face="Arial"><font color="fuchsia"><font style="FONT-FAMILY: Arial; FONT-SIZE: 10pt" size="2">Athena<font size="1">®</font>, Created for the Cause</font><font size="1">™
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<p class="f758a8b8-08bf-4bab-8d22-45dba9e71175"><font face="Arial"><font size="2"><strong>How and Why I Should Support Bottled Water!<br>
</strong>Do not relinquish your right to choose bottled water as a healthy alternative to beverages that contain sugar, calories, etc. Your support of bottled water will make a difference! Your signatures count! Go to
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