xm console #: Could not read tty from store

env: VM-ODA_BASE ODA X5-2,

Guest VM (template: OL6U7_PVHVM):

# uname -a

Linux 3.8.13-118.2.1.el6uek.x86_64 #2 SMP Thu Nov 26 20:37:55 PST 2015 x86_64 x86_64 x86_64 GNU/Linux

Problem Summary

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xm console: work for one Guest VM, but not the other

Problem Description

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# xm list

Name                                        ID   Mem VCPUs      State   Time(s)

Domain-0 0 4096 72 r----- 17541712.8

btcodaasd003v                               53 24576     6     -b----   2863.7

btcodaast004v                               55 24576     6     -b----   1864.6

btcodawsd003v                               54 24576     6     -b----   3265.1

oakDom1                                      1 131072    16     r----- 9654668.6

# xm console 53

xenconsole: Could not read tty from store: No such file or directory

#  But if you do xm console 55, it works