Comment 13 for bug 44609

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Saivann Carignan (oxmosys) wrote :

Tormod Volden : I'm not a expert, but I think that mdadm is necessary for linux software raid (not fakeRaids). I would not be able to confirm you if ubuntu can be installed on fakeRaids controller from liveCD at the moment, but it is not possible at the time with linux software raid. The alternate install CD offer the creation of software RAID devices, and it install mdadm on target system. mdadm seems to be necessary as it monitor raid and assemble them based on config files. I looked quickly at dmraid and it didn't seem to support linux software raid, so I guess that both mdadm and dmraid are necessary.

Also, as said earlier, if mdadm was configured to auto detect and assemble raid arrays in his initramfs hook script (mdadm --assemble --scan), my fix would not be necessary. If this solution makes sense, this would be by far more flexible than my bugfix, however there might be reasons why mdadm is not already configured in that way, needs to be confirmed.