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Re: Adding Partitions

On Thu, May 7, 2009 at 7:59 PM, Paul Stewart <paul paulstewart org> wrote:

Hi there…


I’ve been reading through various docs but getting a bit lost – figure this must be fairly easy to explain ;)


On my machine (Dell R710 Poweredge) I have 6 SAS drives running RAID5 via Perc 6/I controller.  To get Fedora 10 to install, I had to shrink the initial partition down so I thought I’d install with just this:


Filesystem           1K-blocks      Used Available Use% Mounted on

/dev/sda2             10079084   1354216   8212868  15% /

/dev/sda1               198337     19162    168935  11% /boot

tmpfs                  4149532         0   4149532   0% /dev/shm


Then I’ll take the remaining 4.8TB or so and mount them after installing.  The install went fine now with the smaller partition to boot with….


So, having not run Fedora for a bit, I thought I’d fire up FDISK but it tells me:


WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


So I fire up parted and create a partition (weird that it only supports ext2 vs ext3).  That part seems to go fine and now I need to add that partition to /etc/fstab but now I get confused:

I thought that was a little weird so I looked it up, and you're correct, parted does not support ext3 directly, however, the easiest thing to do is create the partition in parted but format it from a regular shell i.e. "mkfs -t ext3 /dev/sdX". 


UUID=8e37b3d8-a52f-4620-ad58-1ae79abd8b50 /                       ext3    defaults        1 1

UUID=74dfbed0-e91c-4d95-b09c-0b8eb9d96543 /boot                   ext3    defaults        1 2

tmpfs                   /dev/shm                tmpfs   defaults        0 0

devpts                  /dev/pts                devpts  gid=5,mode=620  0 0

sysfs                   /sys                    sysfs   defaults        0 0

proc                    /proc                   proc    defaults        0 0

UUID=905ac254-05fb-4ca2-856d-01e05ee4a7d2 swap                    swap    defaults        0 0


I’ve never seen this UUID stuff before – how do I add my new partition to fstab?  I’ve been reading that UUID is related to the GPT but is there a way for me to add this partition?

UUID is a way to uniquly identify a disk, partition, lvm, etc. It is never supposed to change where your /dev entry might if you were to add disks, rearrange, etc, and is now the standard way to reference storage media on several linux distributions.
I know how to do if for a real disk or even LVM but not sure about a raid array but the following link might work: http://blog.mypapit.net/2008/04/linux-how-to-get-harddisk-uuid-number.html


Also, what is the maximum partition size under Core 10?

Can't help you there.


Thanks for your time,




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