Intrepid Call for Testing: Booting Degraded RAID

September 16, 2008

From the Ubuntu Server Team…

Ubuntu Intrepid is racing toward Beta Freeze, scheduled for 25 September 2008.

I’ve been working hard on getting software RAID to work a bit better on the Ubuntu Server.  I’d appreciate any testing assistance the Ubuntu Community can offer.

This work focused on 3 main areas..

  1. Enhancing the initramfs to allow booting on a degraded RAID.  The user can now specify that preference in one of several ways:
    • permanently in a configuration file, see: dpkg-reconfigure mdadm
    • as a kernel boot parameter, bootdegraded=true
    • interactively in the initramfs shell, Do you want to boot degraded [y/N]:

  2. Enhancing grub to install multiple MBRs, one actively sync’d disk in a mirror
    • in the installer, grub-installer
    • and in a running os, grub-install

  3. Adding a question to the Ubuntu Server installer, when it detects that you have installed / or /boot onto a RAID device to prompt the user for their desired behavior, booting degraded or not

Ubuntu Intrepid Alpha 6 will be released in a few days (18 September 2008) containing all of this new functionality, and I would appreciate any assistance testing those server ISO’s!  Once they are built, you can download them from:

File any bugs you find against grub, grub-installer, initramfs-tools, or mdadm, and subscribe kirkland to them.

Cheers,

:-Dustin

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