Re: [Xen-devel] Re: PV domain save/restore break

[Stephan Creutz <stephan.creutz@xxxxxxxxxxxxxxxxx>]

On Tue, 10 Apr 2007 10:13:14 +0100
Keir Fraser <keir@xxxxxxxxxxxxx> wrote:

> Our regression tests ran fine on r14773, and our tests include lots of
> PV save/restores.

I have the same problem running r14774. The output of "xm log" is very
similar to the one from Edwin. Additionally "xm dmesg" gives me the
following messages:

(XEN) page_alloc.c:770:d0 Over-allocation for domain 3: 16385 > 16384
(XEN) memory.c:124:d0 Could not allocate order=0 extent: id=3 memflags=0
(439 of 694)
(XEN) page_alloc.c:770:d0 Over-allocation for domain 3: 16385 > 16384
(XEN) memory.c:124:d0 Could not allocate order=0 extent: id=3 memflags=0
(0 of 44)

"xm log":

[2007-04-10 11:19:07 3648] DEBUG (__init__:1072) restore:shadow=0x0, 
_static_max=0x4000000, _static_min=0x0, 
[2007-04-10 11:19:07 3648] DEBUG (__init__:1072) Balloon: 66172 KiB free; need 
65536; done.
[2007-04-10 11:19:07 3648] DEBUG (__init__:1072) [xc_restore]: 
/usr/lib/xen/bin/xc_restore 28 3 1 2 0 0 0
[2007-04-10 11:19:07 3648] INFO (__init__:1072) xc_domain_restore start: 
p2m_size = 4800
[2007-04-10 11:19:07 3648] INFO (__init__:1072) Reloading memory pages:   0%
[2007-04-10 11:19:07 3648] INFO (__init__:1072) Failed allocation for dom 3: 
694 extents of order 0
[2007-04-10 11:19:07 3648] INFO (__init__:1072) ERROR Internal error: Failed to 
allocate memory for batch.!
[2007-04-10 11:19:07 3648] INFO (__init__:1072) 
[2007-04-10 11:19:07 3648] INFO (__init__:1072) PT L1 race on pfn=0000077a 
mfn=00001403
[2007-04-10 11:19:07 3648] INFO (__init__:1072) Failed allocation for dom 3: 44 
extents of order 0
[2007-04-10 11:19:07 3648] INFO (__init__:1072) ERROR Internal error: Failed to 
allocate memory for batch.!
[2007-04-10 11:19:07 3648] INFO (__init__:1072) 
[2007-04-10 11:19:08 3648] INFO (__init__:1072) Restore exit with rc=1
[2007-04-10 11:19:08 3648] DEBUG (__init__:1072) XendDomainInfo.destroy: domid=3
[2007-04-10 11:19:08 3648] DEBUG (__init__:1072) XendDomainInfo.destroyDomain(3)
[2007-04-10 11:19:08 3648] ERROR (__init__:1072) XendDomainInfo.destroy: 
xc.domain_destroy failed.
Traceback (most recent call last):
  File "//usr/lib/python/xen/xend/XendDomainInfo.py", line 1675, in 
destroyDomain
    xc.domain_destroy(self.domid)
Error: (3, \047No such process\047)
[2007-04-10 11:19:08 3648] ERROR (__init__:1072) Restore failed
Traceback (most recent call last):
  File "//usr/lib/python/xen/xend/XendDomain.py", line 1081, in 
domain_restore_fd
    return XendCheckpoint.restore(self, fd, paused=paused)
  File "//usr/lib/python/xen/xend/XendCheckpoint.py", line 224, in restore
    forkHelper(cmd, fd, handler.handler, True)
  File "//usr/lib/python/xen/xend/XendCheckpoint.py", line 324, in forkHelper
    raise XendError("%s failed" % string.join(cmd))
XendError: /usr/lib/xen/bin/xc_restore 28 3 1 2 0 0 0 failed

Stephan

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