Public bug reported:
Raid array is three identical 500GB hard drives on NVIDIA controller set
to RAID5 for a total of 1TiB (931.52GB) storage.
Installation was done using the Ubuntu LiveCD.
Partitions on the filesystem was created beforehand using gparted. The
partition table is set up to be GPT with a 8MB bios_grub partition, a
256MB fat32 EFIBoot partition (not used for this setup), a 4GB swap,
80GB root partition, and the rest for /home. Then the installer is
invoked and the partitions are set up. GRUB is told to install to the
root of the RAID array in /dev/mapper . The installation went
flawlessly.
However, upon reboot, the kernel gives up on waiting for the root
partition and drops to initramfs busybox. "dmesg|grep device" shows the
following errors:
device-mapper: table: 252:0: raid: unknown target type
device-mapper: ioctl: error adding target to table
Trying to invoke dmraid -a y results in the following error:
ERROR: device-mapper target type "raid" is not in the kernel
RAID set "nvidia_babddecf" was not activated.
nvidia_babddecf is the assigned volume name by the controller.
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1313169
Title:
Ubuntu Trusty Tahr cannot boot on RAID5 array
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