[Xen-bugs] [Bug 186] New: xm console hangs after migrate

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=186

           Summary: xm console hangs after migrate
           Product: Xen
           Version: unstable
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Tools
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: pl@xxxxxxxxxx
                CC: hohnbaum@xxxxxxxxxx


basic system info: P4, 512MB, E1000
domU is file-backed VBD sitting on an NFS share(previously used successfully for
migration testing)

hg tip is:
changeset:   6370:f34e732ed4bfd24f2ab33f5d5ad72ba1635141a4
tag:         tip
user:        cl349@xxxxxxxxxxxxxxxxxxxx
date:        Tue Aug 23 14:58:59 2005
summary:     Xenstore testsuite robustness: save output rather than rerun on
failure.                                                                        
   

Kernel config is default, except for turning off CONFIG_XEN_NETDEV_GRANT_TX and
CONFIG_XEN_NETDEV_GRANT_RX (see bug #185).

I was able to bring up the guest domain, log in and run commands via xm console,
and had a successful migration to localhost.  However, when I tried to reattach
to the console, I got this:

# xm console 2
XENBUS xs_read_watch: 0
E{D{

I was able to ssh into the guest domain, and it is still running fine, but any
further attempts to use the console fail.  The connection works with xm console,
but I can't seem to get any input or output going.

Here are the last few lines of dmesg on the guest:
[boot stuff]
...
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 140k freed
EXT3 FS on sda1, internal journal
Trying to free free IRQ261
XENBUS xs_read_watch: 0

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