how to boot coreos from a raid disk?

[james jiang]

i have install coreos on a raid device.

but it can not start up from the raid device, it boot from the sub radi disk(the real disk like /dev/sd*)

that's why ? can somebody give me some resolution?

i have tried these ways:

change the grub.cfg and insmod some module,but it also can not affection.

that's all.

thanks.

[kyle....@coreos.com]

 You should be able to set up ROOT on software RAID, preferably with the "raid auto-detect" partition type so it is automatically discovered by the kernel. But it is not possible with the rest of the coreos boot disk as it breaks the update mechanism.

[james jiang]

hello dude.

i have two solution for this.

the first is create lvm volume for raid disk.and install the os on the lvm.

the second is ref:

https://gist.github.com/psi-4ward/c1cece78cdf8fa9d64e7

install the coreos on the other disk,and sync the data for the raid disk.

but these two solution i need to try.

after that, i will put the result over there.

[james jiang]

the first lvm is failed to install.

the error message:

$ sudo coreos-install -d /dev/VgRaid/LvRaid -c cloud-config.yml 

Checking availability of "local-file"

Fetching user-data from datasource of type "local-file"

Downloading the signature for http://stable.release.core-os.net/amd64-usr/633.1.0/coreos_production_image.bin.bz2...

2015-05-04 10:37:52 URL:http://stable.release.core-os.net/amd64-usr/633.1.0/coreos_production_image.bin.bz2.sig [543/543] -> "/tmp/coreos-install.YKTo85nR9C/coreos_production_image.bin.bz2.sig" [1]

Downloading, writing and verifying coreos_production_image.bin.bz2...

2015-05-04 10:39:01 URL:http://stable.release.core-os.net/amd64-usr/633.1.0/coreos_production_image.bin.bz2 [139976806/139976806] -> "-" [1]

gpg: Signature made Thu Mar 26 11:07:40 2015 UTC using RSA key ID E5676EFC

gpg: key 93D2DCB4 marked as ultimately trusted

gpg: checking the trustdb

gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model

gpg: depth: 0  valid:   1  signed:   0  trust: 0-, 0q, 0n, 0m, 0f, 1u

gpg: Good signature from "CoreOS Buildbot (Offical Builds) <buil...@coreos.com>" [ultimate]

blockdev: ioctl error on BLKRRPART: Invalid argument