[Ocfs2-users] Is there a way to expand a formated ocfs2 partition without loosi ng the data on it?

Philippe Andries PA at CAPITALATWORK.BE
Wed Oct 18 06:37:00 PDT 2006


Hello
 
I have the feeling this may not be the right forum for the following
question, but I d like to try it here anyway:
 
This is the case:
 
I had a 3x72GB HDD  RAID5 shared external disk drives (HP MSA500),
totalizing about 145,6 GB of data.
I needed to increase the available amount of data, so I added a 4th 72GB HDD
and using HP ACU I expanded my existing RAID5 Array, I have now about 218,5
GB available.
 
But this is of course not reflected in my partition table.  I had created 2
partitions on my drives, both formatted with ocfs2. I also run HP Mutlipath.
See the status here under:

[root at erasme ~]# fdisk -l
 
Disk /dev/cciss/c0d0: 36.4 GB, 36414750720 bytes
255 heads, 63 sectors/track, 4427 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        4427    35455455   8e  Linux LVM
 
Disk /dev/cciss/c0d1: 218.5 GB, 218513571840 bytes
2 heads, 4 sectors/track, 53348040 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
 
           Device Boot      Start         End      Blocks   Id  System
/dev/cciss/c0d1p1               1      488282     1953126   83  Linux
/dev/cciss/c0d1p2          488283    35565344   140308248   83  Linux
 
Disk /dev/cciss/c1d0: 218.5 GB, 218513571840 bytes
2 heads, 4 sectors/track, 53348040 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
 
           Device Boot      Start         End      Blocks   Id  System
/dev/cciss/c1d0p1               1      488282     1953126   83  Linux
/dev/cciss/c1d0p2          488283    35565344   140308248   83  Linux
 
Disk /dev/md0: 1999 MB, 1999896576 bytes
2 heads, 4 sectors/track, 488256 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
 
Disk /dev/md0 doesn't contain a valid partition table
 
Disk /dev/md1: 143.6 GB, 143675555840 bytes
2 heads, 4 sectors/track, 35077040 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

My question is :
I would like to know how to resize my partitions to reflect the changes.
The problem is that I cannot afford loosing the data already on the ocfs2
partition. (the database).
Is there a way to expand a formated ocfs2 partition without loosing the data
on it?
 
Thanks in advance for your answers,
 
 

Philippe Andries 

 
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