RAID 1 Setup

[YesWeCan]

Well you seem to have gone off on your own here. What you appear to have now is 2 300GB RAID partitions and no Windows partitions.

The array is missing sda1 not sdb1. That's why your add command failed. Try
sudo mdadm --add /dev/sda1

Did you say that Ubuntu is running fine on the degraded RAID?


You'll need to reinstall Windows to the unallocated 700GB on one of the disks, if that's what you want.

[catlover2]

reed@Reeds-custom-computer:~$ sudo mdadm --add /dev/sda1
mdadm: /dev/sda1 does not appear to be an md device
reed@Reeds-custom-computer:~$

I didn't do anything to my knowledge that deleted my windows partitions, but I don't mind reinstalling.

Yes, Ubuntu is fine on the degraded RAID.

[YesWeCan]

reed@Reeds-custom-computer:~$ sudo mdadm --add /dev/sda1
mdadm: /dev/sda1 does not appear to be an md device
reed@Reeds-custom-computer:~$

I didn't do anything to my knowledge that deleted my windows partitions, but I don't mind reinstalling.

Yes, Ubuntu is fine on the degraded RAID.

Gawd what am I like?
sudo mdadm /dev/md0 --add /dev/sda1

That ought'a do it. Looks like you've set the LVM up right, etc.

[catlover2]

OK, mdam: added /dev/sdc1. cool. (yes the letters changed again lol.)

In disk utility it says State: Degraded. Action: Recovering

I guess I'm done?

[YesWeCan]

Pretty close, I think. You'll need Grub installed in both disks so you can boot off either if you need to, so don't forget step 29 and choose /dev/sdb and /dev/sdc (or whatever the devices are called now!).

I'd be interested in seeing more details of your LVM volumes. If you have time would you mind posting the outputs of:
sudo pvs
sudo vgs
sudo lvs

[catlover2]

reed@Reeds-custom-computer:~$ sudo pvs
[sudo] password for reed: 
  PV         VG     Fmt  Attr PSize   PFree
  /dev/md0   system lvm2 a-   279.39g 3.09g
reed@Reeds-custom-computer:~$ sudo vgs
  VG     #PV #LV #SN Attr   VSize   VFree
  system   1   4   0 wz--n- 279.39g 3.09g
reed@Reeds-custom-computer:~$ sudo lvs
  LV   VG     Attr   LSize   Origin Snap%  Move Log Copy%  Convert
  home system -wi-ao 117.00g                                      
  root system -wi-ao  35.00g                                      
  swap system -wi-ao   4.30g                                      
  vbox system -wi-ao 120.00g                                      
reed@Reeds-custom-computer:~$

This might be better in a different thread, but how can I setup the 1.5TB drives that I will get tomorrow in a RAID 1 that both Windows and Linux can access?

Thank you for all your help!!

[YesWeCan]

That looks good. You now have a 300GB RAID-1/LVM partition on a pair of 1TB drives. The thing is like a layer cake:

file systems
LVM logical volumes
LVM volume group
mdraid device
disk partition

So if you ever want to enlarge it you have to enlarge each layer starting from the bottom and working up. Post back if you want to do this.


To have a RAID that both Windows and Ubuntu can access will require you to use Windows RAID (or Fake RAID). You have to configure the BIOS to make the two 1.5TB drives RAID-1 members, then install Windows with the appropriate drivers. Fake RAID makes a whole disk a RAID device. You then have to install Ubuntu to it, probably using the alternate install ISO. I don't know much about this but these are the things you'll need to Google for.
See also: http://ubuntuforums.org/showthread.p...highlight=raid

Good luck.