[Xen-devel] xendomains fails if domU has pci= line

[list user <xktnniuymlla@xxxxxxxxxxxxxx>]

Hi all,

Using xen-3.0.2-2 w/ linux 2.6.16-xen from src on fedora core 4.

xendomains seems to have gone buggy but I'll only address this one issue.

domU1 has this line in its config file (for a 1G nic):
    pci = [ '00:0d.0' ]
domU2 has this (for a 10/100 nic):
    pci = [ '00:0f.1' ]
Each also has 1G xennet cards attached to xen bridges.

It works.  I've a multi-legged router and a set of servers on the dmz. 
As long as I manually start and stop them using xm everything is OK.
Now if I bring them up the first time, i.e. there is no 
"/var/lib/xen/save/*", using "service xendomains start" both domains 
start and run.  At that point "service xendomains stop" yields NO ERROR 
messages.  A following "service xendomains start" tries to start domU1 
twice, both times failing.  domU2 starts but is left seg-faulted. 
Domain-0 survives all this.
This is typical of the errors displayed:
  "/usr/lib/xen/bin/xm_restore 11 18 1 18432 1 2 failed!"

Looking at xend.log: this is domU id #5

[2006-05-12 09:30:45 xend] DEBUG (XendCheckpoint:80) [xc_save]: 
/usr/lib/xen/bin/xc_save 11 18 5 0 0 0
[2006-05-12 09:30:45 xend] DEBUG (XendCheckpoint:200) suspend
[2006-05-12 09:30:45 xend] DEBUG (XendCheckpoint:83) In saveInputHandler 
suspend
[2006-05-12 09:30:45 xend] DEBUG (XendCheckpoint:85) Suspending 5 ...
[2006-05-12 09:30:45 xend.XendDomainInfo] DEBUG (XendDomainInfo:877) 
XendDomainInfo.handleShutdownWatch
[2006-05-12 09:30:45 xend.XendDomainInfo] DEBUG (XendDomainInfo:877) 
XendDomainInfo.handleShutdownWatch
[2006-05-12 09:30:45 xend.XendDomainInfo] INFO (XendDomainInfo:836) 
Domain has shutdown: name=migrating-vm2 id=5 reason=suspend.
[2006-05-12 09:30:46 xend] INFO (XendCheckpoint:88) Domain 5 suspended.
[2006-05-12 09:30:46 xend] DEBUG (XendCheckpoint:91) Written done
[2006-05-12 09:30:46 xend] ERROR (XendCheckpoint:227) Had 0 unexplained 
entries in p2m table
[2006-05-12 09:30:47 xend.XendDomainInfo] INFO (XendDomainInfo:836) 
Domain has shutdown: name=migrating-vm2 id=5 reason=suspend.
[2006-05-12 09:30:47 xend] ERROR (XendCheckpoint:227) Saving memory 
pages: iter 1   0%^H^H^H^H  6%^H^H^H^H 12%^H^H^H^H 18%^H^H^H^H 
24%^H^H^H^H 30%^H^H^H^H 36%^H^H^H^H 42%^H^H^H^H 49%^H^H^H^H 56%^H^H^H^H 
62%^H^H^H^H 68%^H^H^H^H 75%^H^H^H^H 81%^H^H^H^H 87%^H^H^H^H 94%^M 1: 
sent 16348, skipped 0, delta 1930ms, dom0 100%, target 0%, sent 277Mb/s, 
dirtied 5020Mb/s 134513459 pages
[2006-05-12 09:30:47 xend] ERROR (XendCheckpoint:227) Total pages sent= 
16348 (0.89x)
[2006-05-12 09:30:47 xend] ERROR (XendCheckpoint:227) (of which 0 were 
fixups)
[2006-05-12 09:30:47 xend] ERROR (XendCheckpoint:227) All memory is saved
[2006-05-12 09:30:47 xend] ERROR (XendCheckpoint:227) Save exit rc=0
[2006-05-12 09:30:47 xend.XendDomainInfo] DEBUG (XendDomainInfo:1335) 
XendDomainInfo.destroyDomain(5)
I've poked at this for a couple days and don't understand this well 
enough to debug it myself.  I'm not even sure where to begin.
If anybody wants to help I'll do whatever experiments on my side I can 
and report whatever is requested.
Waiting eagerly for help... ;)

Thanks,
Mike Wright

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