1. Is there an issue with reiserfs on the Z platform installs of Linux?
The same limitations apply on Z as on Intel.
2. Is there a way of growing a filesystem without unmounting it? I thought you could do this with Reiserfs but I have found nothing that is related to Reiserfs on the Z Platform.
The same limitations apply as on Intel. See the extendfs man page for details.
Shouldn't that be resize_reiserfs? It's there with SLES8. But SLES is partial to reiserfs. I've used it on Intel many times to grow them dynamically... even while being heavily used... seemed to work. Haven't tried on s390.
Have to lvextend the volume first of course.
