Mucking with a mounted filesystem?

[Kenny Lussier]

Hi All,

I am running into a disk space issue on an older server. I'd like to
do a tune2fs -m 1 (or maybe 0) to get rid of most, if not all of the
reserved block space on the partition that is close to full. The disk
is actually an iSCSI volume mounted from an EqualLogic array, and then
exported via NFS to 6 other servers.

Has anyone ever run tune2fs on a mounted/in-use filesystem? Is this safe to do?

Thanks,
Kenny