1st Post, MDADM Issue

Hi All

Please could someone assist me with a software raid 5 array issue i am having?

About a week or so ago i was asked to have a look at a mate of mine's Company Server that had crashed after a power failure - no ups and close to 9GB data with no backup.
HP Proliant mini server running OpenMediaVault v1.9. with a software raid5 setup consisting of 4x 3TB Western Digital Hard drives


The 80GB boot drive crashed (hardware malfunction) so i replaced it and installed the server with OpenMediaVault 1.9 as was previously installed. When starting up however i noticed that none of the shares were available and upon closer inspection discovered that the raid to had crashed. I therefore re-assembled the raid but now have no file system nor any partitions on any of the 4x drives.

This is about the extent of my knowledge base when it comes to Linux, and again i don't know that i'd want to risk it with no backup of the data.

I have run fsck /dev/md1, but this reports an error 2 while executing fsck.linux_raid_member not found.
Please i am desperate for some advise!

Thanks
Wayne

Computer:i5,8G,2x500GB HD. one of 500GB hard drive, /dev/sda, is installed Linux Mint Rebecca with 20GB boot/470GB home EXT4/10GB swap. I want to add one more 500GB hard drive, /dev/sdb, to create RAID 1 with old one. Is it possible? and How to command?

Hello everyone,

I recently had an issue where I lost my whole backup server due to an electrical overload causing my server to literally explode and fried all 4 of my terabyte drives.... needless to say, I have no more backups because of this, and everywhere I read about backups said that setting up a raid array would allow me to keep good backups.... boy did I learn this lesson the hard way in needing to have some sort of external backup option, which brings me to this post and my questions:

I'm using Ubuntu 14.04 LTS server on an older Dell Poweredge 600sc, and I was thinking of using WD Passport 1Tb external drives to be used as my "offsite" backup option. I don't have a lot of data, and my current backup schedule is only a weekly backup, so thinking that if I have two of these passport drives so that I can have one drive offsite and one attached to the server, and rotate them every 4 weeks so as not to loose all my data.

Here's my question: Ideally, I would love to just be able to unplug the current drive, plug in the new drive and have everything work. However, I don't see this actually working, but if there's a way to do this, that would be totally awesome.... ;-)

So, realistically, I know I will have to unmount the one drive, unplug it, then plug in the new drive and mount it on the system. Is there a way to mount this to the same mount point automatically so that I don't have to rewrite my backup script each time I swap drives out so that the backups go to the same mount point? Or will the UUID's get messed up each time I do this?

Hopefully this makes sense and an easy solution can be found to accomodate this idea.....

Thanks again for all your help. This site is awesome for newbies such as myself........

Mikey

I am trying to create a combined media and storage server (NAS) on my new Unbuntu server. I have a 256GB drive as my boot drive and I have two 1TB drives that are empty. I want to use the two 1TB drives as storage for some important data and also for the media that will be played/collected for my XMBC server. I want to be able to access/manipulate these shares/files/data from my Windows computers over my home network.

I have Unbuntu 14.04 and Webmin installed.

I greatly appreciate any assistance. I feel like I am running around in circles on Webmin with this.

Hi all! I'm a Linux/Ubuntu noob who has recently bought a brand new HP laptop, nuked the Win 8 OS that it came/w & installed Ubuntu 14.04LTS. After DL/installing apps & setting it up a bit I decided to use gparted & partition my HDD for an additional OS, isolate programs from files, adjust swap, etc. All went well until I was prompted to reboot which I did & now I'm stuck @

" BusyBox v1.21.1 (Ubuntu 1:1.21.0-1ubuntu1) multi-call binary.

usage: chroot NEWROOT [PROG ARGS]

Run PROG with root directory set to NEWROOT "

Which invariably produces: (no matter what command I enter?!?)

" (initramfs) boot from BIOS
/bin/sh: boot: not found "

I'm quite confused @ how to proceed here?

My primary concern is the health of my machine through/after this is worked out.
That said, I'd love to not have to re-install Ubuntu/apps, etc. as I was partitioning the HDD because I had gotten it to a nice back-up place & felt ready to set it up.
Like I said I'm new to Linux/Ubuntu & waayyy behind on my terminal coding, but I could really use some pointers here & I'm not usually hard to teach. lol
Help?! :-[
Thanx!
Embarrassingly yours, WS.

We are going in cricles to try to get our Ubuntu installation (14.04.1) to allow us to load Ubuntu's operating system to the 500 GB drive which is always set up somehow as SDC. We do not want the BOOT LOADER on the RAID Arrays, but on the 500 GB drive. We have two sets of RAID arrays in one box/enclosure.

/dev/sda - 18 TB RAID Array
/dev/sdb - 12 TB RAID Array
/dev/sdc - 500 GB Raptor Drive <-- We want this one to be the sda drive and where we'd load the BOOT LOADER also.

How do we do this?

I have a machine with two drives a Compact Flash card (CF) and a Solid State Drive (SSD). Recently I have been experiencing failures of both the SSD and the CF.

When I sent these back to the manufacturer for analysis, they reported that the SSDs and CDs are healthy - but that it appears that the partition table has become corrupt.

Using a Kickstart I created my Linux machine with the partitions split over the CF (to hold the operating system) and the SSD (to hold my data):
/ on the CF
/boot on the CD
/usr on the CF
/home on the SSD
Would Unix have an issue with using the CF to boot and run the operating system and using the SSD to store files?
Has anyone experienced any issues of this kind?

Hi All;
I am new to Linux and Ubuntu. I am setting up a RAID for a media server and want to be sure I do it right and in the proper order.

Based upon feedback received on this forum I think it makes most sense to partition my 4 TB disks into 2 partitions of 2 TB each.

So am I correct in running MDADM FIRST on both (Unpartitioned) 4 TB disks to create RAID 1 and then partition (Using Parted) the resulting single 4 TB disk that I create with MDADM into two 2 TB partitions? Thanks.

Tim

A week ago, I realized that I could not boot live disks. At first, I thought that it was the optical drive not writing the disks correctly, but when I tried two live disks that I've used many times before nothing happened with those either.

I have CD/DVD drive listed first in my BIOS' boot order and I even tried selecting the optical drive in the menu when the computer started and it still does not boot a disk. Thankfully, my somewhat old hard drives are still chugging along but I need to be able to use a live disk, in case one or both die on me.

My question is, how can I know for sure what the problem is? Is there a way to test the optical drive (Samsung Super Writemaster - which has a bad rep)? Could it be my motherboard. It was bought new 2 years ago, and there are no other issues with it. Also, I have been able to create playable DVDs on my computer with the Optical drive that work perfectly on my Bluray player, yet I cannot play the movies or open a data disk in file manager on my computer. What does that mean?

I want to know that it's worth it to buy another burner, before shelling out the money when I'm already practically broke from Christmas gift purchases. Any suggestions on how to test the optical drive would be appreciated.

Booted my computer with 2 USB flash drives inserted. One of the drives turned out to be an MS-DOS boot drive. The PC booted in DOS and wiped out the partition table of the other flash drive with my data on it. This second (64Gb) drive had a single 64Gb type 83 (Linux) primary partition (ext4 file system).

Is there a way to recover the data that's on the second stick?

I've been told that all I have to do is repartition it exactly as it was and my data will be there. But I'd like to have advice from the pros here before I start messing with it.

For the time being, I dd-ed the entire stick, as is, onto a blank partition of my hard disk (dd if=/dev/sdb of=/dev/sda14). The process completed without errors but /dev/sda14 is unmountable for the moment.

Thanks for any help.