How To Set Up Software RAID1 On A Running System (Incl. GRUB Configuration) (Debian E

Discussion in 'HOWTO-Related Questions' started by Pasco, Jun 3, 2008.

  1. Pasco

    Pasco New Member HowtoForge Supporter

    Hi folks

    I started with the mentioned how-to, but I didn't get far on my debian etch Server.

    The problems are starting already here:

    I got the following output on my server, even tough I followed the "perfect setup for debian etch server":

    The main problem is, that my second partitions are both "Extended" and not like in the how-to "Linux swap / Solaris" and "Linux".

    Do anybody knows what I did wrong or if I could set up the RAID 1 even tough? Because I got problems in the following step:

    I get following error at the second partition:

    Any ideas? :confused:
     
  2. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    Run
    Code:
    fdisk /dev/hdc
    Instead of
    Code:
    Command (m for help): <-- t
    Partition number (1-4): <-- 2
    you type
    Code:
    Command (m for help): <-- t
    Partition number (1-4): <-- [B][COLOR="Red"]5[/COLOR][/B]
    because your second partition is on/dev/hdc5.
     
  3. Pasco

    Pasco New Member HowtoForge Supporter

    Oh, I got it, thanks Falko.

    So have I got it right, that in the how-to there are 3 partitions and on my system are only 2 partitions. I don't have to do anything with the "Extended"-Partition?

    Thanks a lot!
     
  4. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    That's right - although I haven't tried this myself.
     
  5. Pasco

    Pasco New Member HowtoForge Supporter

    It worked like a charm! Thanks again Falko!

    I can confirm that the how-to also works with the partitions described from me in this thread (2 Partitions with Extended Version). So I got only md0 (/ and /boot together on one partition) and md1. Works flawlessly!
     
  6. pligor

    pligor New Member

    So sda1 and sda5 only?

    I know this is an old post but some things have changed since 10.04

    I am currently using 12.04
    By default with a regular ubuntu installation in a pc with a single drive is to have the partitions: the main partition (sda1) and an extended partition (sda2) which contains the swap partition (sda5)

    Can anybody confirm that is only need to create two (and not three) raid-arrays, md1 and md5 which correspond to sda1 <-> sdb1 and sda5 <-> sdb5 ?

    Please let me know if you need further information!
    Thank you :)
     
  7. falko

    falko Super Moderator Howtoforge Staff Moderator HowtoForge Supporter ISPConfig Developer

    You don't need RAID for swap, so in your case you just need one RAID array.
     
  8. pligor

    pligor New Member

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