Extend a Redhat LVM filesystem

Slightly simpler case than the earlier one ... this is just something I'd like to have spelled out for convenience, since I do it so rarely.

We want to fix this:

/dev/mapper/prod_dg-volOracle
                       4128448   3918544       192 100% /u01

And we have this:

[root@woogie /]# lvscan
  ...
  ACTIVE            '/dev/prod_dg/volOracle' [4.00 GB] inherit
[root@woogie /]# pvscan
  ...
  PV /dev/sdb1   VG prod_dg   lvm2 [273.22 GB / 139.44 GB free]

So we do this:

[root@woogie /]# lvextend --size 6G /dev/prod_dg/volOracle /dev/sdb1
  Extending logical volume volOracle to 6.00 GB
  Logical volume volOracle successfully resized

(lvextend usage: lvextend --size nG logical-path physical-path ... Use the paths from pvscan and lvscan, and absolute or relative sizes denoted by K,M,G, etc.)

[root@woogie /]# umount /u01
[root@woogie /]# resize2fs /dev/prod_dg/volOracle 6G
resize2fs 1.35 (28-Feb-2004)
Please run 'e2fsck -f /dev/prod_dg/volOracle' first.

[root@woogie /]# e2fsck -f /dev/prod_dg/volOracle
e2fsck 1.35 (28-Feb-2004)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/prod_dg/volOracle: 27925/524288 files (3.4% non-contiguous), 996131/1048576 blocks
[root@woogie /]# resize2fs /dev/prod_dg/volOracle 6G
resize2fs 1.35 (28-Feb-2004)
Resizing the filesystem on /dev/prod_dg/volOracle to 1572864 (4k) blocks.
The filesystem on /dev/prod_dg/volOracle is now 1572864 blocks long.

[root@woogie /]# mount /u01