Red Hat Bugzilla – Bug 1003074
RFE: Include support in anaconda to auto detect DDF mirror and use it for install
Last modified: 2016-02-03 16:12:55 EST
Description of problem:
Anaconda should be able to detect md mirror arrays within DDF containers and install the OS on them. This support currently is present in opensuse 12.3 and it would be nice to have it in Fedora as well. This is useful for deployments where we would like the OS (/boot, /) to reside on a mirror to improve availability. The question of booting from a broken mirror remains, but it can be currently addressed by booting into the rescue system and marking one of the disks faulty at which time the OS should boot fine.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot F19 in rescue mode on system with two identical disks
2. # mdadm -C /dev/md/ddf0 -e ddf -l container -n 2 /dev/sda /dev/sdb
3. # mdadm -C /dev/md0 -l raid1 -n 2 /dev/md/ddf0
4. Reboot system and allow F19 anaconda to start
Anaconda detects /dev/md0 as install disk and lays out /boot,/, swap and grub2 on it.
Anaconda does not detect any install source
Same steps on opensuse 12.3 results in the installer detecting /dev/md0 and creating /dev/md0p1 -> /boot and /dev/md0p2 -> / and complete the install.
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For now, the md 1.2 metadata seems sufficient for this purpose.