[...] > I decided to use ext3 file systems in the LVM partitions and I wonder > if there is something like xfs_growfs for ext[23]. Not that I would
I made som very basic test on this some some weeks ago, and I extended an ext3(2?) fs sucessfully (i.e. the data was intact after the expansion). If I recall correctly you can extend the filesystem more or less "in use" but you have to unmount it to reduce it. I should say that although the filesystem was mounted during extension there was no "real usage" of it (no fileaccess). Best regards, Emil