From the Canyon Edge -- :-Dustin

Tuesday, September 16, 2008

Intrepid Call for Testing: Booting Degraded RAID

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.



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