Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I am trying to mount a hard drive with an XFS filesystem on it in Ubuntu. It was originally formatted in a netgear stora NAS device.

I am using a command in ubuntu like this,

sudo mount -t xfs /dev/sdc1 /mnt/stora

The command craps out the whole operating system. The GUI closes, a command prompt comes up and the machine is useless from that point, I have to reset. The error is this,

BUG: Unable to handle kernell NULL pointer derefence at 0000000c
xfs_alloc_fix_freelist

So I take it there is an XFS module and there is a bug. I have installed a clean 11.04 Ubuntu, so is there perhaps some bug fixes for the XFS module?

share|improve this question
    
Could you please post the output of fdisk -l /dev/sdb? I suppose the device for your partition may be /dev/sdb1 and not /dev/sdb. –  uloBasEI Jul 30 '11 at 8:10
add comment

1 Answer

Regarding the output of the fdisk command, I would mount your partition using the following command:

sudo mount -t xfs /dev/sdb1 /mnt/stora

The error message you get comes from a typo: the device to your partition is /dev/sdb1 and not /dev/sdb.

share|improve this answer
    
Right, that is not working. Should I expect some output from the command disk -l /dev/sdb1. Having said that I used that command after I had done the mounting. So after the mounting the folder mnt/stora is an empty folder, and the free space says '4.4GB' which is the same as the mnt folder, so the mount didn't do anything. –  peter Jul 30 '11 at 9:04
    
Also if I try umount /mnt/stora, umount /dev/sdb1, umount /dev/sdb they all say that is is not mounted. Which one is correct out of interest? –  peter Jul 30 '11 at 9:06
    
The command fdisk -l from my last comment was just to know the partition layout of your hard drive and to be sure that your xfs partition was located on /dev/sdb1. Using it after sudo mount -t xfs /dev/sdb1 /mnt/stora should not change anything to its output. Is the command mount | grep /dev/sdb1 returning anything after you have mounted your partition with sudo mount -t xfs /dev/sdb1 /mnt/stora? If not, did you get any other error message when mounting the partition? –  uloBasEI Jul 30 '11 at 12:43
    
No error messages or anything. I was running ubuntu inside a VM, but now I decided to install it with WUBI. The result is that the mounting operation craps out in a completely different way. The GUI closes, and a command prompt comes up. Take a look at the question, I will update it. –  peter Jul 31 '11 at 2:59
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.