On 05/09/07, <b class="gmail_sendername">Denis Melnikov</b> <<a href="mailto:email@example.com">firstname.lastname@example.org</a>> wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
> I managed to get RAID working partially. It took me a while<br>> to figure out how to do it.<br>> RAID doesn't come up as an option on the initial screen, so I<br>> thought I would document what I did for others who wonder how
<br>> to access the RAID function from the installer.<br>><br>> 1. I got to the partition stage of the installation (on the<br>> standard install).<br>> 2. For each of my 4 disks I created a partition.<br>> 3. I selected each parttion one by one and set it as physical
<br>> partition for RAID.<br>> Once the disks are assigned as RAID, the setup RAID option<br>> appears on the main screen.<br>> 4. Select Setup RAID,<br>> 5. Assign RAID 1 to the first two drives, with on spare.
<br>> 6. Do the same for the next pair of drives.<br>> At this point it is possible to set up LVM. But I want to do<br>> RAID 0 on the 2 RAID 1 devices.<br>> It doesn't seem possible to do this from the installation
<br>> partition manager.<br>><br>> How can I take my pairs of RAID1s and make them into RAID10?<br>> Can I continue the installation setting up LVM one of the<br>> RAID1s then once the system is setup run mdadm to make a
<br>> raid0 out of the two raid pairs?<br><br>Yes. You can make up a volume of several partitions including<br>RAID ones.<br><br>Make sure you have /boot on a separate RAID1 partition,<br>because GRUB cannot load from LVM prepared one.
</blockquote><div><br>OK. So I should make 2 partitions on each disk. One small one for /boot which can be RAID1 with 2 spares.<br>The other partition would be as previously described. 2 Raid1 pairs striped into one RAID10 Drive.
<br><br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">> Or is there a better way?<br><br>Can you make a RAID partition for RAID0 over previously
<br>prepared RAID1 partition? Unfortunately, I cannot try it now.<br><br>Denis<br><br><br>> I was thinking of setting up one 320GB RAID10 drive with one<br>> LV and using the guided partitioning within the LV. Would
<br>> that be a reasonable approach?</blockquote><div>Actually it would be a 640GB drive because RAID 0 usage space on both disks.<br> </div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
><br>> Thanks,<br>> Krsnendu dasa<br>><br>><br>> On 26/08/07, Scott Balneaves <<a href="mailto:email@example.com">firstname.lastname@example.org</a>> wrote:<br>> On Sat, Aug 25, 2007 at 12:35:38PM -0700, Joe Rowe wrote:
<br>> ><br>> > Like myself,<br>> > More and more people are using Edubuntu or Ubuntu<br>> > servers or critical workstations with inadequate plans for<br>> Disk failure.<br>> ><br>> >
<br>> > Anyone,<br>> > Please reply if you have done software RAID on Ubuntu/Edubuntu<br>> > and you are good at documenting steps by step tips.<br>><br>> I've done software raid for years and years. It's pretty
<br>> easy, and just<br>> required doing a bit of reading and understanding. The<br>> O'Reilly "Managing Raid<br>> on Linux" is an excellent book on the subject.<br>><br>> Scott<br>><br>
> --<br>> Scott L. Balneaves | "Eternity is a very long time,<br>> Systems Department | especially towards the end."<br>> Legal Aid Manitoba | -- Woody Allen<br><br><br>--<br>edubuntu-users mailing list
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