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Forum Discussion
Mount previously created raid via USB
Hi,
Please forgive me if this has already been covered, but I didn't find it.
I set up my Pro6 the other day with one 2TB disk and planned to add my other, smaller disks later. I didn't realize that Xraid2 requires that the smaller disks be the first disks in the volume. So, I offloaded almost 2TB worth of data onto the first disk. I inserted the first of my smaller disks, and the readynas displayed an error about the size of the disk being to small. I pulled the 2TB disk and did a factory reset with one of the small disks in bay 1. I have since recreated the raid with 4 disks (3x500, 1x1000).
Here's what I would like to do:
option A:
either plug the 2TB disk into the Readynas via USB and do a direct file copy from the 2TB to the internal volume;
or
option B:
plug the disk into the computer using ubuntu or knoppix, mount the 2TB, and push it over the network to the readynas.
My questions are:
is option A possible? I don't want it to erase the disk and create a new partition.
if option A isn't going to work, what is the best procedure for accomplishing option B?
Thanks in advance,
Brett
Please forgive me if this has already been covered, but I didn't find it.
I set up my Pro6 the other day with one 2TB disk and planned to add my other, smaller disks later. I didn't realize that Xraid2 requires that the smaller disks be the first disks in the volume. So, I offloaded almost 2TB worth of data onto the first disk. I inserted the first of my smaller disks, and the readynas displayed an error about the size of the disk being to small. I pulled the 2TB disk and did a factory reset with one of the small disks in bay 1. I have since recreated the raid with 4 disks (3x500, 1x1000).
Here's what I would like to do:
option A:
either plug the 2TB disk into the Readynas via USB and do a direct file copy from the 2TB to the internal volume;
or
option B:
plug the disk into the computer using ubuntu or knoppix, mount the 2TB, and push it over the network to the readynas.
My questions are:
is option A possible? I don't want it to erase the disk and create a new partition.
if option A isn't going to work, what is the best procedure for accomplishing option B?
Thanks in advance,
Brett
51 Replies
Replies have been turned off for this discussion
- 5.
It has recognized that it's present. It shows in the volumes section of the web interface. But, it shows with "no filesystem". - What happens if you do the following?:
mdadm --assemble --scan gavinbox:/dev# mdadm --assemble --scan
mdadm: /dev/md/ubuntu:333 has been started with 1 drive (out of 2).
mdadm: /dev/md/ubuntu:222 has been started with 1 drive (out of 2).
mdadm: /dev/md/ubuntu:111 has been started with 1 drive.
gavinbox:/dev#
ubuntu:333 should be the partition with the data on it- O.K. That looks good.
Now do a
vgscan - Here's what I receive:
gavinbox:/dev# vgscan
Reading all physical volumes. This may take a while...
WARNING: Duplicate VG name c: Existing MKGJNt-RKEh-Yudt-7E5Y-85rF-Zdqf-4UDZlI (created here) takes precedence over IRRhWe-NS8K-Caiv-vcho-ZlyM-2zZQ-QO9dFv
Found volume group "c" using metadata type lvm2
Found volume group "c" using metadata type lvm2
gavinbox:/dev# - O.K. You'll need to
do
mdadm --stop /dev/md/ubuntu:333
mdadm --stop /dev/md/ubuntu:222
mdadm --stop /dev/md/ubuntu:111
Then unmount the disk, connect it back to ubuntu and do
mdadm --assemble --scan
vgscan
vgrename /dev/c /dev/oldvol
Edit: vgscan not vgchange - is there a specific command at this point to safely unmount the disk, or has the mdadm --stop done that?
- If the mdadm --stop worked then it would've safely unmounted the disk.
- Is there anything missing from the vgchange cmd?
root@ubuntu:/home/ubuntu# mdadm --assemble --scan
mdadm: /dev/md/111 has been started with 1 drive.
mdadm: /dev/md/222 has been started with 1 drive (out of 2).
mdadm: /dev/md/333 has been started with 1 drive (out of 2).
root@ubuntu:/home/ubuntu# vgchange
Need 1 or more of -a, -c, -l, -p, -s, -x, --refresh, --uuid, --alloc, --addtag, --deltag, --monitor or --poll
Run `vgchange --help' for more information.
root@ubuntu:/home/ubuntu# - Oops. You should do vgscan not vgchange.
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