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[Xen-devel] Live migrations / saving fails with >32gb of ram?

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: Nathan March <nathan@xxxxxx>
  • Date: Mon, 25 Jul 2011 13:59:42 -0700
  • Delivery-date: Mon, 25 Jul 2011 14:04:06 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Hi All,

Having an issue where I can't save or live migrate a VM once it contains
more than 32gb of ram. The hosting dom0 fails immediately with:

[2011-07-25 13:49:01 9265] INFO (XendDomainInfo:2078) Domain has
shutdown: name=migrating-nathanxenuk2 id=1 reason=suspend.
[2011-07-25 13:49:01 9265] DEBUG (XendCheckpoint:144) Written done
[2011-07-25 13:49:01 9265] INFO (XendCheckpoint:423) xc: error: Couldn't
map p2m_frame_list (22 = Invalid argument): Internal error
[2011-07-25 13:49:01 9265] INFO (XendCheckpoint:423) xc: error: Failed
to map/save the p2m frame list (22 = Invalid argument): Internal error
[2011-07-25 13:49:01 9265] ERROR (XendCheckpoint:185) Save failed on
domain nathanxenuk2 (1) - resuming.
Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendCheckpoint.py",
line 146, in save
    forkHelper(cmd, fd, saveInputHandler, False)
  File "/usr/lib64/python2.6/site-packages/xen/xend/XendCheckpoint.py",
line 411, in forkHelper
    raise XendError("%s failed" % string.join(cmd))
XendError: /usr/lib/xen/bin/xc_save 26 1 0 0 0 failed
[2011-07-25 13:49:01 9265] DEBUG (XendDomainInfo:3135)
[2011-07-25 13:49:01 9265] DEBUG (XendDomainInfo:3176)
XendDomainInfo.resumeDomain: completed

Googled around but I can't seem to find anything related with that
error. The same vm and dom0's work fine as soon as I decrease the ram
below the 32gb mark. Anyone have any insight on what might be going on here?


Nathan March <nathan@xxxxxx>
Gossamer Threads Inc. http://www.gossamer-threads.com/
Tel: (604) 687-5804 Fax: (604) 687-5806

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