I have a question about RAID+LVM I honestly couldn't understand.
I'm assuming you are using RAID5 or some other kind that can't be
resized; what is the benefit of using an LVM on such? From what I
read, the LVM would be set to md0 and if you wanted to add another
drive you'd need to add a new md device, aka 3+ more drives and a lost
drive's worth space.<br>
<br>
So, in this kind of case, is there any point of even using it?<br>
<br>
I just recently lost 250x4 in a RAID5 due to 1 drive failing and the
filesystem on another drive getting completly corrupted. I'm
still not sure what happened, but the SATA controller went poof and I
think heat is to blame (my fault). I'm still at a loss as to what
filesystem I should use, but was leaning twords XFS.<br>
<br>
Also just googling while writing this message I stumbled upon
<a href="http://www.mail-archive.com/linux-raid@vger.kernel.org/msg01981.html">http://www.mail-archive.com/linux-raid@vger.kernel.org/msg01981.html</a> ,
mentioning EVMS ( <a href="http://evms.sourceforge.net">http://evms.sourceforge.net</a> ). In particular it
says it supports resizing RAID5, and it looks like you could do
mdadm->EVMS(resize)->mdadm. I know nothing about this, has
anyone used it before? It's still updated, while raidreconf
doesn't appear to be.<br>
<br><div><span class="gmail_quote">On 9/15/05, <b class="gmail_sendername">Andrew McNabb</b> <<a href="mailto:amcnabb@mcnabbs.org">amcnabb@mcnabbs.org</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On Thu, Sep 15, 2005 at 03:41:05PM -0600, Brandon Beattie wrote:<br>> What exactly are you achieving by using raid5? Does the phrase Raid5<br>> make you feel invinsible?<br><br>As you have said, there are lots of possible types of failure, and
<br>someone who thinks that raid will save them from everything is an idiot.<br><br>However, I use raid in conjunction with LVM on my myth box, and I've<br>been really happy with it. For me, the issue is that the more hard
<br>drives you have, the greater the frequency of failure. As someone who<br>has seen a lot of dead hard drives, I believe that normal hard drive<br>failure is my weakest link. Just a few weeks ago I had a disk die, and
<br>raid saved me (and my roommates who use mythtv) a lot of inconvenience.<br>Of course, I also do backups of important data.<br><br><br>--<br>Andrew McNabb<br><a href="http://www.mcnabbs.org/andrew/">http://www.mcnabbs.org/andrew/
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