Description of problem: Currently, get-e2uuid gets filesystem UUID via "tune2fs -l". However, this doesn't work for JBD(journaling block device): whenever you try to get uuid of a JBD, you get a error that tells "Filesystem has unsupported feature(s)". In another way, UUID could be gotten via blkid, for both JBD or filesystems such as ext2/3/4. So it would be better to replace "tune2fs -l" with "blkid" in the implementation of get-e2uuid. Version-Release number of selected component (if applicable): ><fs> version major: 1 minor: 2 release: 7 extra: How reproducible: Always Steps to Reproduce: 1. ><fs> mke2journal 1024 /dev/VG/jounal 2. ><fs> get-e2uuid /dev/VG/jounal libguestfs: error: get_e2uuid: tune2fs: Filesystem has unsupported feature(s) while trying to open /dev/VG/jounal Couldn't find valid filesystem superblock. 3. Actual results: Expected results: get-e2uuid should return UUID successfully for JBD Additional info:
Patches posted upstream: https://www.redhat.com/archives/libguestfs/2010-June/msg00006.html
This patch has been pushed upstream. If this needs to be fixed for RHEL 5 / 6, please clone this bug and adjust the Product accordingly.