Comment 49 for bug 8058

This bug does not need further comments confirming its continued existence. I expect that it will continue to exist for some time yet, because it arises from a fundamental design issue on the part of XFS (it skates close to the edge of what POSIX permits, and thereby makes it impossible for grub-install to reliably force data out to disk such that its subsequent raw disk reads will work). I have heard that GRUB 2 may resolve this by not needing to know the sector number for stage 1.5, but I wouldn't hold your breath just yet. When we switch to GRUB 2 (not for Hardy), we will revisit this bug and see if it still exists.

I do not see that this prevents Ubuntu being "taken seriously in enterprise environments". I have yet to encounter an enterprise environment that required /boot to be on XFS.