Comment # 5 on bug 1230345 from Ruediger Oertel

multipath/broken:
s390zl21:~ # grep mknod bla.multipath 
3480780 mknodat(AT_FDCWD, "/dev/zipl0000", S_IFBLK|0700, makedev(0xfe, 0x1)) =
0
3480782 mknodat(AT_FDCWD, "/dev/zipl-dm-temp-00", S_IFBLK|000, makedev(0x8,
0x10)) = 0
3480780 mknodat(AT_FDCWD, "/dev/zipl0000", S_IFBLK|0700, makedev(0xfe, 0x1)) =
0
3480780 mknodat(AT_FDCWD, "/dev/zipl0000", S_IFBLK|0700, makedev(0xfe, 0x1)) =
-1 EEXIST (File exists)
3480780 mknodat(AT_FDCWD, "/dev/zipl0001", S_IFBLK|0700, makedev(0xfe, 0x1)) =
0
3480789 mknodat(AT_FDCWD, "/dev/zipl-dm-temp-00", S_IFBLK|000, makedev(0x8,
0x10)) = 0
3480780 mknodat(AT_FDCWD, "/dev/zipl0000", S_IFBLK|0700, makedev(0xfe, 0x1)) =
-1 EEXIST (File exists)
3480780 mknodat(AT_FDCWD, "/dev/zipl0001", S_IFBLK|0700, makedev(0xfe, 0x1)) =
0
3480823 mknodat(AT_FDCWD, "/dev/zipl-dm-temp-00", S_IFBLK|000, makedev(0x8,
0x10)) = 0



sdb/working:
^[[As390zl21:~ # grep mknod bla.sdb 
3482680 mknodat(AT_FDCWD, "/dev/zipl0000", S_IFBLK|0700, makedev(0x8, 0x10)) =
0
3482680 mknodat(AT_FDCWD, "/dev/zipl0000", S_IFBLK|0700, makedev(0x8, 0x10)) =
0
3482680 mknodat(AT_FDCWD, "/dev/zipl0000", S_IFBLK|0700, makedev(0x8, 0x10)) =
-1 EEXIST (File exists)
3482680 mknodat(AT_FDCWD, "/dev/zipl0001", S_IFBLK|0700, makedev(0x8, 0x10)) =
0
3482680 mknodat(AT_FDCWD, "/dev/zipl0000", S_IFBLK|0700, makedev(0x8, 0x10)) =
-1 EEXIST (File exists)
3482680 mknodat(AT_FDCWD, "/dev/zipl0001", S_IFBLK|0700, makedev(0x8, 0x10)) =
0