Raghuv Adhepalli wrote: <snip> > @mark: This is my dmesg output, > > XFS (sdf): xfs_log_force: error 5 returned. > sd 0:0:9:0: [sdj] Synchronizing SCSI cache > sd 0:0:9:0: [sdj] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK > mpt2sas0: removing handle(0x000e), sas_addr(0x4433221105000000) > XFS (sdf): xfs_log_force: error 5 returned. <snip > sdj: unknown partition table > sd 0:0:10:0: [sdj] Attached SCSI disk > XFS (sdj): Filesystem has duplicate UUID <snip> This concerns me. As I asked, you *did* umount the drive before removing it? I would expect that to remove the UUID from /dev/disk/by-uuid; for some reason, it's clearly still there, and I think that's what's confusing the system. mark