# mount /dev/sdb /btrfs # echo "scsi remove-single-device 1 0 0 0" > /proc/scsi/scsi # lsscsi [0:0:0:0] disk ATA VBOX HARDDISK 1.0 /dev/sda [2:0:0:0] disk ATA VBOX HARDDISK 1.0 /dev/sdc # btrfs su create /btrfs/sv1 Create subvolume '/btrfs/sv1' ERROR: cannot create subvolume - Input/output error # echo "scsi add-single-device 1 0 0 0" > /proc/scsi/scsi # lsscsi [0:0:0:0] disk ATA VBOX HARDDISK 1.0 /dev/sda [1:0:0:0] disk ATA VBOX HARDDISK 1.0 /dev/sdd <--- [2:0:0:0] disk ATA VBOX HARDDISK 1.0 /dev/sdc The same disk comes back as /dev/sdd (the issue is same if disk is mounted as an ext4 fs) Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html