<html><body><div style="color:#000; background-color:#fff; font-family:arial, helvetica, sans-serif;font-size:12pt"><div><span>cat /proc/mdstat</span></div><div><span>is your best friend when running mdm raid. It tells you the current state of each "drive" as well as the state of the components. <br></span></div><div><br>Example from my machine:<br>Personalities : [raid1]<br>md0 : active raid1 sda3[1]<br> 243175808 blocks [2/1] [_U]<br><br>unused devices: <none><br><br>I have one raid one device, md0. It has one dead device (the _). <br> <br></div><div><span style="font-family:courier;">--- </span><br style="font-family:courier;"><span style="font-family:courier;">Wayne Johnson, | <span style="color:rgb(191, 95, 0);">There are two kinds of people: Those</span> </span><br style="font-family:courier;"><span
style="font-family:courier;">3943 Penn Ave. N. | <span style="color:rgb(191, 95, 0);">who say to God, "Thy will be done," </span></span><br style="font-family:courier;"><span style="font-family:courier;">Minneapolis, MN 55412-1908 | <span style="color:rgb(191, 95, 0);">and those to whom God says, "All right, </span></span><br style="font-family:courier;"><span style="font-family:courier;">(612) 522-7003 | <span style="color:rgb(191, 95, 0);">then, have it your way." --C.S. Lewis</span><br></span><br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: arial, helvetica, sans-serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2">
<hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Mike Miller <mbmiller+l@gmail.com><br> <b><span style="font-weight: bold;">To:</span></b> TCLUG Mailing List <tclug-list@mn-linux.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Monday, April 2, 2012 9:18 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [tclug-list] testing that RAID1 is working using mdadm<br> </font> </div> <br>
On Sun, 1 Apr 2012, Mr. B-o-B wrote:<br><br>> 1) The Drive is Dead<br>> 2) The Drive is Disconnected<br>> 3) Something went terribly wrong, and was never set-up correctly.<br><br>I'll be studying this further, but I would put my money on "1" because I remember hearing a strange noise coming from inside the box a few weeks ago. At the time I wondered if it was one of the HDDs. I wasn't sure how to check if they both were working. Then I forgot about it until now.<br><br>That machine is important to me, but not as important as the other machine I am about to set up. In fact, the RAID1 on the machine in question was done partly as practice for setting up this other machine.<br><br>Thanks *very* much, Mr. B-o-B for your help with this. You have done a lot for me and I really appreciate it.<br><br>Mike<br>_______________________________________________<br>TCLUG
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