F16 Weird systemd XFS mounting issue

[blueflame]

Hi,

I have 2 XFS partitions that I want mounted at boot (they're in fstab). These are existing partitions and mount fine under my existing F14. But under F16 I get unpredictable behavior at boot, 99% of the time I get prompted to enter emergency mode, then press ^D to continue the boot and everything proceeds normally and the 2 XFS partitions get mounted anyway.

Here's what dmesg says:

[   13.387989] SGI XFS with ACLs, security attributes, large block/inode numbers, no debug enabled
[   13.391243] SGI XFS Quota Management subsystem
[   13.393066] mount[674]: mount: unknown filesystem type 'xfs'
[   13.393778] systemd[1]: mnt-whatever.mount mount process exited, code=exited status=32
[   13.395167] XFS (sdb2): Mounting Filesystem
[   13.405798] systemd[1]: Job fedora-autorelabel-mark.service/start failed with result 'dependency'.
[   13.407601] systemd[1]: Job fedora-autorelabel.service/start failed with result 'dependency'.
[   13.408424] systemd[1]: Job local-fs.target/start failed with result 'dependency'.
[   13.409173] systemd[1]: Triggering OnFailure= dependencies of local-fs.target.
[   13.409917] systemd[1]: Unit mnt-whatever.mount entered failed state.
[   13.516056] XFS (sdb2): Ending clean mount

Here's fstab:

/dev/sdb2               /mnt/backup        xfs       defaults        0 0
/dev/sdb1               /mnt/whatever      xfs       defaults        0 0

If I just have 1 of either of these XFS partitions enabled in fstab then the issue does not happen. Very rarely, with both partitions enabled in fstab, the boot goes without a hitch. So I'm thinking there is some kind of race condition at work here.

Does anyone have any ideas on how to work around / fix this or should I just report a bug?

TIA.