Package: ftp.debian.org Severity: normal system-storage-manager was/is supposed to be a generic storage tool, supposed to support all/most layers of the Linux Storage stack, like: block, device mapper, lvm, file systems etc
This package was orphaned a couple of months ago and still hasn't found a new maintainer. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=824749 Thanks, Ritesh

