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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
- I must not understand how to properly mount this disk as something other than /dev/c/, How should I do that?
- Try something like
mdadm --stop /dev/md2
mdadm -A /dev/md6 -m2 --update=super-minor - Here is what I receive when I issue the first command:
gavinbox:/dev# mdadm --stop /dev/md2
mdadm: failed to stop array /dev/md2: Device or resource busy
Perhaps a running process, mounted filesystem or active volume group?
the second command doesn't return anything - You need to unmount the volume and run "vgchange -an" before you can stop the RAID.
What do you see if you do a "fdisk -l" - here is the fdisk
gavinbox:/dev# fdisk -l
Found valid GPT with protective MBR; using GPT
Disk /dev/sda: 976773168 sectors, 465G
Logical sector size: 512
Disk identifier (GUID): bc9a0a56-8d52-4051-9104-9a450ed7fc9a
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 976773134
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4096M 0700
2 8388672 9437247 512M 0700
3 9437248 976769072 461G 0700
Found valid GPT with protective MBR; using GPT
Disk /dev/sdb: 976773168 sectors, 465G
Logical sector size: 512
Disk identifier (GUID): 4dda6578-a403-4019-bff0-b859bd7bd354
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 976773134
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4096M 0700
2 8388672 9437247 512M 0700
3 9437248 976769072 461G 0700
Found valid GPT with protective MBR; using GPT
Disk /dev/sdc: 976773168 sectors, 465G
Logical sector size: 512
Disk identifier (GUID): d1f8e243-9122-4915-bf63-1c5db83b6179
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 976773134
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4096M 0700
2 8388672 9437247 512M 0700
3 9437248 976769072 461G 0700
Found valid GPT with protective MBR; using GPT
Disk /dev/sdd: 1953525168 sectors, 931G
Logical sector size: 512
Disk identifier (GUID): 6047c70f-4ead-41dc-8996-21d7e2972124
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4096M 0700
2 8388672 9437247 512M 0700
3 9437248 976769072 461G 0700
4 976769080 1953521038 465G 0700
Found valid GPT with protective MBR; using GPT
Disk /dev/sde: 1953525168 sectors, 931G
Logical sector size: 512
Disk identifier (GUID): fc14cf8b-615a-4df4-9878-92efcb58e4fa
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 1953525134
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4096M 0700
2 8388672 9437247 512M 0700
3 9437248 976769072 461G 0700
4 976769080 1953521038 465G 0700
Disk /dev/md0: 4293 MB, 4293906432 bytes
2 heads, 4 sectors/track, 1048317 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk /dev/md0 doesn't contain a valid partition table
fdisk: device has more than 2^32 sectors, can't use all of them
Disk /dev/dm-0: 2199.0 GB, 2199023255040 bytes
255 heads, 63 sectors/track, 267349 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-0 doesn't contain a valid partition table
Found valid GPT with protective MBR; using GPT
Disk /dev/sdf: 3907029168 sectors, 1863G
Logical sector size: 512
Disk identifier (GUID): 320e102a-4f72-4c78-9d4d-714f0ea27b78
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 3907029134
Number Start (sector) End (sector) Size Code Name
1 64 8388671 4096M 0700 Linux RAID
2 8388672 9437247 512M 0700 Linux RAID
5 9437256 3907024064 1858G 0700 Linux RAID - Is that from the NAS? I should have specified that I meant in Ubuntu.
- Yes, the drive is plugged into the nas right now. Do I need to go back to ubuntu? Or can this be done from the NAS?
- I think so. But first, what's the output of "df -h" on the NAS like?
- here you go:
gavinbox:/dev# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md0 4.0G 351M 3.5G 10% /
tmpfs 16K 0 16K 0% /USB
/dev/c/c 2.3T 838G 1.5T 37% /c
gavinbox:/dev# - So it hasn't mounted the external disk.
How many disks are in your NAS right now?
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