Can't mount XFS filesystem from a partition after upgrade to 4.2

I have a separate partition that is formatted as XFS. Previously, I would use the devices widget in the toolbar to attach the partition to a VM and then mount it in the VM with mount -t xfs. However, now that I’ve updated to 4.2, mount complains that it can't read the superblock on /dev/xvdi and dmesg shows I/O error, dev xvdi, sector 0 op 0x0:(READ) flags 0x1000 phys_seg 1 prio class 0 and XFS (xvdi): SB validate failed with error -5.. Using the qvm-block attach command in dom0 gives the same result. I broke down an used mount -t xfs in dom0, which worked fine. What changed in between 4.1 and 4.2 so that now I can’t mount this partition in a VM?