| 1 |
On Thursday 07 April 2011 05:22:41 Dale wrote: |
| 2 |
> Hi, |
| 3 |
> |
| 4 |
> Quick question about LVM. I have a 750Gb drive that has miscellaneous |
| 5 |
> stuff on it. Stuff likes videos, music, pictures, ISO files and a few |
| 6 |
> other things. It's not full yet but it is working on it. I have my OS |
| 7 |
> on sda. The large drive is on sdc. If I buy another drive it should be |
| 8 |
> sdd. I think this is possible from what I have read but want to make |
| 9 |
> sure. Could I put sdc and sdd on LVM but the OS remain as it is with |
| 10 |
> LVM not involved at all? Basically, my OS stays just like it is and is |
| 11 |
> not touched my LVM at all but the two larger drives are managed by LVM. |
| 12 |
|
| 13 |
Simple (and complete answer): Yes, you can use LVM only for a subset of the |
| 14 |
drives you have inside a system. |
| 15 |
|
| 16 |
You will need to do it in the following steps though: |
| 17 |
- create PV, LVM and LV on the new drive |
| 18 |
- copy data over |
| 19 |
- create PV on old drive and add it to LVM |
| 20 |
Contact me or list if you need help with the actual commands and syntax. |
| 21 |
(There are plenty of howtos around) |
| 22 |
|
| 23 |
> I want to do it this way because I don't trust LVM enough to put my OS |
| 24 |
> on. Just my personal opinion on LVM. |
| 25 |
|
| 26 |
Interesting argument. You don't trust LVM, so you put your personal files on |
| 27 |
there, but not the easily replacable stuff like OS? :) |
| 28 |
|
| 29 |
> If there is a better solution to link two large drives, I'm open to |
| 30 |
> those ideas as well. LVM is all I can think of is why I mention it. |
| 31 |
|
| 32 |
RAID-0 (if they're same size) or linking them together. |
| 33 |
Compared to those, I would always recommend LVM as that is easier to maintain |
| 34 |
then JBOD or RAID-0. |
| 35 |
|
| 36 |
There might also be filesystems that include disk-spanning, but if you're |
| 37 |
already not convinced about LVM being reliable, I wouldn't use one of these |
| 38 |
filesystems then. |
| 39 |
|
| 40 |
Please note, I have not lost data related to issues with LVM. I have, in the |
| 41 |
distant past, lost data related to issues with filesystems. |
| 42 |
Because of the latter, I rely on a combination of RAID-subsystems with LVM on |
| 43 |
top and reliable backups :) |
| 44 |
|
| 45 |
-- |
| 46 |
Joost Roeleveld |
Archives