  Re: How to generate a large file allocating space  Hello Alex
* Alex Bligh <alex alex org uk> hat geschrieben: >> Question:
Did you consider using plain LVM for this purpose? >> By
creating a >> logical volume, no data is initialized, only the
meta data is created >> (what seems to be exactly what you
need). Then, each client may access one >> logical volume r/w.
Retrieving the extents list is very easy as well. And >> because
there are no group management data (cluster bitmaps, inode
bitmaps >> and tables) of any kind, you will end up with only
one single extent in >> most cases regardless of the size of the
volume you've created. > Plain LVM or Clustered LVM? Clustered
LVM has some severe limitations, > including needing to restart
the entire cluster to add nodes, which > is not acceptable. >
Plain LVM has two types of issue: > 1. Without clustered LVM, as
far as I can tell there is no locking >    of metadata.
Possible (I don't know exactly)  >    I have no guarantees that
access to the disk does not >