Now the R7x releases bring us the 2.6 kernel with lots of improvements. A very nice one it the ability to resize (meaning increase!) the partitions and filesystems online, without the need of unmounting them.
[Expert@test]# lvresize -L +12GB vg_splat/lv_current
Extending logical volume lv_current to 12.00 GB
Logical volume lv_current successfully resized
[Expert@test]# resize2fs /dev/mapper/vg_splat-lv_current
resize2fs 1.39 (29-May-2006)
Filesystem at /dev/mapper/vg_splat-lv_current is mounted on /; on-line resizing required
Performing an on-line resize of /dev/mapper/vg_splat-lv_current to 3145728 (4k) blocks.
The filesystem on /dev/mapper/vg_splat-lv_current is now 3145728 blocks long.
Please note: this can only be done while increasing the filesystems. Reducing the filesystems requires them to be unmounted!
