Description of problem: ufs2 write support is disabled in current kernel configuration, so ufs2 partitions are not writable. CONFIG_UFS_FS=m # CONFIG_UFS_FS_WRITE is not set Now with gentoo and debian (next stable release of debian will have freebsd port) starting to ship FreeBSD kernels, number of systems with FreeBSD and GNU/Linux dual boot or FreeBSD virtual instance is going to increase. It would be important to share files between the two operating systems and FreeBSD write support is available only for ext2, hence ufs2 would be an ideal choice for sharing data between the two operating systems. I came across this issue when trying to mount a ufs2 partition inside a vritual guest with guestfish. Version-Release number of selected component (if applicable): How reproducible: always Steps to Reproduce: 1. mount a ufs2 partition 2. 3. Actual results: write support is not enabled in kernel Expected results: able to read and write from ufs filesystems after loading ufs kernel modules. Additional info: https://bugzilla.redhat.com/show_bug.cgi?id=541618
ufs write support is not working even after rebuilding the kernel with write support enabled (CONFIG_UFS_FS_WRITE=y), though mount stopped complaining. Ref https://bugzilla.redhat.com/show_bug.cgi?id=541618#c12 (error message and modified source rpm links) probably this bug should go upstream (?)
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Still a bug in Rawhide. Whether it is possible to fix this or not is another matter, since "UFS" seems to be a rather ill-defined format and writing when you're not really sure what the format is could be dangerous.
I'm closing this as WONTFIX for now. It's been sitting around for quite a while, and there have been no significant commits to UFS in terms of write support since 2007 or 2008. Work on this should be done upstream and we can either reopen this bug when it's usable, or create a new one.