resizing an lvm volume with setup-storage

[Michael Tautschnig]

> Hello Michael,
> 
> >>>>Could you give 3.3.4+experimental2 another chance? That one should not do
> >>>>pvcreate on volumes that are part of that volume group already.
> I found another issue on the LVM resize option : it always preserves
> the partition. This is not appropriate, as when resizing /usr like I
> do one is expecting the partition to be cleaned before the new
> installation.  Also, setup-storage fails if the partition does not
> already exist :
> 
> Can't preserve /dev/vg0/usr because it does not exist
> 
> 
> IMHO the resize option should behave as follows:
> if (the volume exists) {
>  resize the volume
>  if (a preserve* flag is also set for this volume) {
>    resize the filesystem
>  } else {
>    create a new filesystem
>  }
> } else {
>  ignore the resize flag and create a new volume + filesystem
> }
> 

I believe that it's mostly a matter of naming and/or using the options somewhat
differently:

- If you don't want to preserve data, there is no reason to use resize or
  preserve. Just specify the size and you get what you want.
- If you want to preserve data but need to change sizes, you use "resize".
- If you really want setup-storage not to touch some volume, use one of the
  preserve options. Where preserve is one of preserve_always, preserve_reinstall
  or preserve_lazy. The latter seems to be still buggy, as you noted, that has
  to be fixed.

I'm not sure whether this was a problem of missing documentation/clarification
or rather a real wish to alter behaviour.

Best,
Michael

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
Url : http://lists.uni-koeln.de/pipermail/linux-fai/attachments/20100326/48a0997d/attachment.bin