Monday, June 1, 2009

/etc/fstab help!

Most of you know I'm a Linux n00b. I have no apologies for that...at least I'm trying right?

I unsucessfully attempted to install Oracle on Jaunty Jackalope (9.04) so I decided to use VirtualBox and Oracle Enterprise Linux. I'd successfully created a Windows Vista Ultimate virtual machine, off to try my second.




I chose fixed size storage:


Then select the folder where I wanted it to reside:


Location and size:


And the summary:


And received this:


At first, I began to search for problems with VirtualBox. I tried created a smaller disk, 2.0 GB, and it worked. So I knew I had a space issue (well, I think I knew).

So, fdisk to view the available partitions (as root):
root@cdj-laptop:/# fdisk -l
root@cdj-laptop:/#
So I did it as myself:
chet@cdj-laptop:/# fdisk -l
chet@cdj-laptop:/#
Using sudo:
chet@cdj-laptop:/# sudo fdisk -l
root@cdj-laptop:/#
So I installed GParted, and tried using that Partition Editor to see what was available:


WTF?

So I've tried search on "ubuntu fdisk nothing" and get nothing. So I'm asking you fine folks...either help me out or point me to the manual (RTFM!). Links are helpful. Answers are the most helpful. Something. I don't want to reinstall again but will if I have to.

Probably helpful to everyone is the contents of my /etc/fstab file as well:


Thank you and have a nice day.
at

11 comments:

  1. SydOracleJune 1, 2009 at 11:35 PM

    df -h
    should show available space.
    I've used GParted on Ubuntu Jaunty. Think it needs to be sudo'd though.

    ReplyDelete
  2. oraclenerdJune 2, 2009 at 12:34 AM

    Filesystem Size Used Avail Use% Mounted on
    tmpfs 1.5G 0 1.5G 0% /lib/init/rw
    varrun 1.5G 140K 1.5G 1% /var/run
    varlock 1.5G 0 1.5G 0% /var/lock
    udev 1.5G 180K 1.5G 1% /dev
    tmpfs 1.5G 148K 1.5G 1% /dev/shm
    rootfs 19G 16G 2.6G 86% /
    lrm 1.5G 2.4M 1.5G 1% /lib/modules/2.6.28-11-generic/volatile

    I forgot to mention that this is a 150 GB hard drive. 20 or so for the programs, 3 for swap, and the remainder (~127 gb) for data.

    ReplyDelete
  3. John ScottJune 2, 2009 at 3:21 AM

    Chet,

    Unless I read that wrong, you're trying to create a 20Gb disk image in /opt, you have no seperate /opt partition (or mount) so that would come under / instead, where you only have 2.6Gb free (so 20Gb into 2.6Gb would overflow it).

    You do have a /opt listed in your fstab (/dev/sda6) but your df -h listing doesn't show that partition as being mounted.

    John.

    ReplyDelete
  4. jpiwowarJune 2, 2009 at 11:18 AM

    Hi Chet,

    Adding to the comment for John S:

    While /etc/fstab mentions /opt, the mount point is actually named /data. Do you have a /data directory? If not, the OS won't be able to mount the partition.

    What happens if you try the following?
    sudo mkdir /data
    sudo mount /data

    Hopefully, running df -h again should show you the large partition that you're after.

    Regards,

    John P.

    ReplyDelete
  5. oraclenerdJune 2, 2009 at 1:33 PM

    @john and john

    I tried created a VM image in the /data directory (I do have one). Perhaps it's just not mounted? Tonight I'll try to mount it manually and see what happens...I'll probably blow up the computer. ;)

    Thanks guys for the pointers...I'll report my results back tonight.

    ReplyDelete
  6. jpiwowarJune 2, 2009 at 2:31 PM

    Chet,

    Just a quick note: If you've attempted to to create a VM image in /data, then there is an opportunity for confusion.

    Before you manually mount the 127G partition, check the existing /data directory to make sure that it's empty. If it's not empty, then mounting the 127G partition at /data will make the current contents of the /data directory inaccessible.

    If /data is *not* currently empty, then before attempting to mount the 127G partition, try this (as root, or using sudo):

    mv /data /data_old
    mkdir /data
    mount /data
    mv /data_old/* /data

    Probably a good idea to make sure your VM is shut down before schlepping all those files around, though. :-)


    Regards,

    John P.

    ReplyDelete
  7. oraclenerdJune 2, 2009 at 8:52 PM

    barnacles:

    chet@cdj-laptop:/data$ sudo mount /data
    mount: special device /dev/disk/by-uuid/1cb30763-a262-4555-91c3-4674a234d455 does not exist
    chet@cdj-laptop:/data$ su root
    Password:
    root@cdj-laptop:/data# mount /data
    mount: special device /dev/disk/by-uuid/1cb30763-a262-4555-91c3-4674a234d455 does not exist
    root@cdj-laptop:/data# mount /opt
    mount: can't find /opt in /etc/fstab or /etc/mtab
    root@cdj-laptop:/data#

    ReplyDelete
  8. TomJune 5, 2009 at 1:09 PM

    Virtual Box rocks! I seriously hope Oracle does not kill it after acquiring Sun! It works better on Ubuntu than VMWARE which I just had nightmares trying to install specific kernel drivers. VMWARE was a pain in the ass.

    ReplyDelete
  9. oraclenerdJune 5, 2009 at 1:13 PM

    @tom

    You're supposed to give me a solution for my problem, not sing the praises of VirtualBox. :)

    ReplyDelete
  10. TomJune 10, 2009 at 4:28 PM

    I thought you already fixed it!

    ReplyDelete
  11. oraclenerdJune 10, 2009 at 4:30 PM

    No, not yet. I gave up on trying to fix it for the time being.

    However, with the most recent updates, The "Places" now displays the 136 GB Media...only nothing happens when I select it.

    Should be my impetus to spin up a cloud image shouldn't it?

    ReplyDelete