LILO+RAID+LVM or EVMS (+GRUB) ?

From: Bill Mair (bill.mair_at_web.de)
Date: 05/19/05

  • Next message: JohnInSD At san DOT rr dot COM: "Re: LILO+RAID+LVM or EVMS (+GRUB) ?" 
    Date: Thu, 19 May 2005 00:07:41 +0200

    I'm configuring and planning a new RAID system in my server.

    What I have is 4 x 160GB IDE Drives on 2 controllers (1 is an extra card on
    the PCI bus the other is the normal MB controller) so that each drive is a
    primary, giving me the drives: hda hdc hde hdg

    What I'm condsidering is the following:

    Raid set up:

    md0 - raid1 - hda1 hdc1 hde1 hdg1 - all 2GB
    md1 - raid1 - hda2 hdc2 hde2 hdg2 - all 2GB
    md2 - raid1 - hda3 hde3 - 156GB each
    md3 - raid1 - hdc3 hdg3 - 156GB each
    md4 - raid0 - md2 md3 - 312GB

    md0 - / boot with lilo (using "raid-extra-boot=mbr" in lilo conf)
    md1 - swap
    md2 - stripe for md4
    md3 - stripe for md4
    md4 - used as PV for LVM

    Then use LVM for /usr,/var,/tmp,/home,etc.

    I'm hoping for maximum flexability by putting LVM on top RAID01 device with a
    maximum in performance. I don't want to define a 01 RAID for each parition I
    want and LVM's resizing is a bonus.

    I'm using Debian (sarge) with a monolithic kernel with all of the HW, RAID and
    EVMS support compiled in.

    So what I was wondering is:

    1) Will LVM on RAID cause any performance problems ?
    2) Am I better off forgetting the md4 and adding md2 and md3 to LVM and PVs
    and using LVM's striping ?
    3) Should I forget all this and use EVMS ?
    4) If I I'm better off using EVMS should I drop lilo and use GRUB ?

    So what are your opinions and insight regarding the best path to take in doing
    the above.

    Thanks for any input.

    Bill

  • Next message: JohnInSD At san DOT rr dot COM: "Re: LILO+RAID+LVM or EVMS (+GRUB) ?"

    Relevant Pages

    • Re: Linux LVM-RAID wie in AIX?
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    • Re: LILO+RAID+LVM or EVMS (+GRUB) ?
      ... giving me the drives: ... It is ill-advised to swap to a RAID partition. ... LVM on top of RAID1 is known to cause problems for LILO. ... The same can be said for EVMS. ...
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