| 1 |
Róbert Èeròanský writes: |
| 2 |
|
| 3 |
> On Sun, 27 Nov 2011 00:01:07 +0100 |
| 4 |
> Alex Schuster <wonko@×××××××××.org> wrote: |
| 5 |
> |
| 6 |
> > pvcreate /dev/sda5 |
| 7 |
> > vgcreate myvg /dev/sda5 |
| 8 |
> > lvcreate -n usr -L 10G myvg |
| 9 |
> > mke2fs -j /dev/myvg/usr |
| 10 |
> > |
| 11 |
> > Of course, just using /dev/sda5 for /usr is simpler. But what if this |
| 12 |
> > turns out to be too small? With so many partitions I would think this |
| 13 |
> > is very likely to happen sooner or later. With LVM, all you'd have to |
| 14 |
> > do is: |
| 15 |
> > |
| 16 |
> > lvresize -L +1G /dev/myvg/usr |
| 17 |
> > resize2fs /dev/myvg/usr |
| 18 |
> |
| 19 |
> Here I do not understand from where this +1G is taken? Don't you have |
| 20 |
> to make something smaller by 1G first? |
| 21 |
|
| 22 |
I assumed that /dev/sda5 is large enough and has free space that is not |
| 23 |
being used for logical volumes. The lvcreate -L 10G step creates a |
| 24 |
logical volume of 10 GB size, the rest of the volume group (that is using |
| 25 |
the physical volume /dev/sda5) is being unused. You can create other |
| 26 |
logical volumes with lvcreate, or extend existing ones, until all of that |
| 27 |
space is being used. Then, you need to make something smaller of course |
| 28 |
(which can be done), or you can extend your volume group by another |
| 29 |
partition. Which may be on the same drive, or even on another one. |
| 30 |
|
| 31 |
pvcreate /dev/sda6 |
| 32 |
vgextend myvg /dev/sda6 |
| 33 |
lvresize... |
| 34 |
|
| 35 |
Wonko |
Archives