Building Out XenServer 6.5 with USB Boot and Software RAID 10

[Romo]

I removed the /dev/md10 entry from fstab so it doesn't automount and causes conflict with xenserver handling storage

[Romo]

Xencenter after reboots properly automounts our new array

[scottalanmiller]

We need to get the UUID out of the proposed script, that much I know won't work.

[scottalanmiller]

@Romo said:

I removed the /dev/md10 entry from fstab so it doesn't automount and causes conflict with xenserver handling storage

Ah, good catch. I'm updating the OP with a finalized script. Please review.

[Romo]

I got the uuid using this:

madadm --detail /dev/md10 | grep UUID

[Romo]

We don't need to install mdadm, its there already

[scottalanmiller]

@Romo said:

I got the uuid using this:

madadm --detail /dev/md10 | grep UUID

Thanks.

[scottalanmiller]

@Romo said:

I got the uuid using this:

madadm --detail /dev/md10 | grep UUID

What is the raw output of that command? Did you need to clean it up? I want this scripted, not manual, if possible.

[brianlittlejohn]

i'm going to have to try this out, i have an old dell with FAKERAID.

[Romo]

This is the output @scottalanmiller just have to replace : with -

UUID : fba59a9c:7e6db5a2:d21e4034:3b415cfd

[mlnews]

@brianlittlejohn said:

i'm going to have to try this out, i have an old dell with FAKERAID.

You can do it anywhere. No FakeRAID needed since the whole point is to bypass it. Works equally well where there is no FakeRAID too.

[Romo]

echo "modprobe raid10" > /etc/sysconfig/modules/raid.modules
modprobe raid10
chmod a+x /etc/sysconfig/modules/raid.modules

mdadm --create /dev/md0 --level=10 --raid-devices=4 /dev/sd[a-d]

Loading the modules to kernel need to go before creating the md device

[scottalanmiller]

@romo can you confirm if this command works?

madadm --detail /dev/md10 | grep UUID | cut -d' ' -f3

[Romo]

I got a blank output after fixing madadm to mdadm

[scottalanmiller]

It worked on the output that you gave to me.

[scottalanmiller]

See what -f2 does.

[scottalanmiller]

I refreshed the OP with the latest revisions.

[Romo]

[DustinB3403]

Romo can you confirm if SDA is the USB drive?

we need to confirm that it's not attempting to be added to the Array with

mdadm --create /dev/md0 --level=10 --raid-devices=4 /dev/sd[a-d]

[Romo]

Yes in my setup sda simulates to be the usb, thats why the array starts with sdb