Adding disk with existing file system?

File systems- EXT3, EXT4, XFS & JFS, partitioning and mount points

Adding disk with existing file system?

Postby simonp2 » Wed 13. Feb 2013, 17:26

Hello

I'm planning a NAS using OVM. I have an existing 2TB disk with a lot of data on it. This disk was previously in my PCH-A110 media player. I believe the PCH has formatted it as either NTFS or an EXT2/3 filesystem.

Will I be able to connect this disk to my OVM machine or will I have to reformat it before use? There's quite a bit of data to back up so It'd be nice to not have to move it prior to moving it to the OVM box.
simonp2
 
Posts: 14
Joined: Wed 13. Feb 2013, 17:10

Re: Adding disk with existing file system?

Postby ryecoaaron » Wed 13. Feb 2013, 17:29

You should be able to just mount it in Filesystems if it recognizes the file system type. Then share it. No reformatting necessary.
omv 1.0.9 kralizec | 64 bit | 3.14 backport kernel | omvextrasorg 1.0.2
omv-extras.org plugins source code and issue tracker - https://github.com/OpenMediaVault-Plugin-Developers
User avatar
ryecoaaron
 
Posts: 6423
Joined: Mon 20. Aug 2012, 16:03
Location: Wisconsin, USA

Re: Adding disk with existing file system?

Postby simonp2 » Wed 13. Feb 2013, 17:35

That sounds very reassuring.

I'm also a bit interested in the logical drive options that OVM offers. Is it possible to pool disks with existing filesystems in 1 big logical drive?

In my case I'm considering buying another 2TB drive of a different make/model and adding it to my OVM machine alongside the mentioned drive. I'd love to have 4TB total storage as 1 share rather than have 2x2TB.
simonp2
 
Posts: 14
Joined: Wed 13. Feb 2013, 17:10

Re: Adding disk with existing file system?

Postby ryecoaaron » Wed 13. Feb 2013, 17:43

Not with the existing filesystem. If you could put the data in a temporary spot, you can create a raid 0 array to make the two drives look like one big drive. If one drive fails, everything is gone though.

If the data is important, I would consider buying two drives. You could create a degraded raid 5 with the two drives, copy all the old info to the new raid, and then add the old drive to the new raid. This would allow one drive to fail without losing anything. It would also allow you to grow the raid 5 by adding more drives.
omv 1.0.9 kralizec | 64 bit | 3.14 backport kernel | omvextrasorg 1.0.2
omv-extras.org plugins source code and issue tracker - https://github.com/OpenMediaVault-Plugin-Developers
User avatar
ryecoaaron
 
Posts: 6423
Joined: Mon 20. Aug 2012, 16:03
Location: Wisconsin, USA

Re: Adding disk with existing file system?

Postby simonp2 » Wed 13. Feb 2013, 18:24

It's replaceable data, all the irreplaceable stuff is backed up offsite.

But I take your post to mean that I should running Raid in order to get what I want, and that usually involves identical drives yeah?

If I've got mixed drives my only option is to make each drive it's own share?
simonp2
 
Posts: 14
Joined: Wed 13. Feb 2013, 17:10

Re: Adding disk with existing file system?

Postby ryecoaaron » Wed 13. Feb 2013, 18:32

I would recommend raid. I don't use LVM but I think it can be used on individual drives to get one large filesystem. Some people run LVM on top of raid as well. If anything, you gain speed by running raid 0 or 5.

I have different drives in a raid in one of my systems. The raid will just function at the size of the smallest drive and speed of the slowest drive.
omv 1.0.9 kralizec | 64 bit | 3.14 backport kernel | omvextrasorg 1.0.2
omv-extras.org plugins source code and issue tracker - https://github.com/OpenMediaVault-Plugin-Developers
User avatar
ryecoaaron
 
Posts: 6423
Joined: Mon 20. Aug 2012, 16:03
Location: Wisconsin, USA


Return to General Storage Info

Who is online

Users browsing this forum: No registered users and 3 guests