Linux Partitioning Issue

[Barry Brimer]

You're welcome Geoff.

On Fri, 26 Dec 2008, Geofrey Rainey wrote:

> It worked, thank you Barry!
>
> Regards,
> Geoff.
>
> -----Original Message-----
> From: redhat-list-bounces at redhat.com
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of Barry Brimer
> Sent: Thursday, 25 December 2008 5:42 p.m.
> To: General Red Hat Linux discussion list
> Subject: Re: Linux Partitioning Issue
>
>
>
> On Thu, 25 Dec 2008, Geofrey Rainey wrote:
>
>> I have a system with a raid 5 array which I have extended using HP
>> array Configuration utility tools. You can see from the output of
>> fdisk below That the disk has extra space:
>>
>> Disk /dev/cciss/c0d0: 366.8 GB, 366870733824 bytes
>> 255 heads, 63 sectors/track, 44602 cylinders Units = cylinders of
>> 16065 * 512 = 8225280 bytes
>>
>>           Device Boot      Start         End      Blocks   Id  System
>> /dev/cciss/c0d0p1   *           1          13      104391   83  Linux
>> /dev/cciss/c0d0p2              14        2563    20482875   8e  Linux
>> LVM
>> /dev/cciss/c0d0p3            2564        2690     1020127+  82  Linux
>> swap / Solaris
>> /dev/cciss/c0d0p4            2691       26761   193350307+   5
> Extended
>> /dev/cciss/c0d0p5            2691       26761   193350276   8e  Linux
>> LVM
>>
>> However because of the limited size of the extended partition I am
>> unable to use the extra space, I receive the following error:
>>
>> Command (m for help): n
>> No free sectors available
>>
>> Command (m for help):
>>
>> Presumably I have to remove partition 5 and also the extended
>> partition 4, then resize the extended partition to use the extra
>> space. However I'm concerned that I'll loose all the data on partition
>
>> 5, is there a way around this? I am wondering if I specify the start
>> and end cylinders of partition 5 to be the same size will the data be
>> preserved?
>
> In my experience if you have the starting position as before, all should
> be fine.  Delete partition 5, delete partition 4, create the new
> partition 4, with the old start and the new end, create the new
> partition 5 with the same start cylinder for partition 5 with a new end
> cylinder and then run ext2online (RHEL/CentOS
> 4) or resize2fs (RHEL/CentOS 5) to extend the filesystem.  As always,
> standard rules apply.  Backups are good, more backups on different
> systems / disks are better.
>
> Hope this helps.
>
> Barry
>
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