On Fri, 23 Oct 2009 15:16:51 -0700
Mukesh Rathor <mukesh.rathor@xxxxxxxxxx> wrote:
> On Fri, 23 Oct 2009 11:09:36 +0100
> Tim Deegan <Tim.Deegan@xxxxxxxxxx> wrote:
>
> > At 05:21 +0100 on 23 Oct (1256275309), Mukesh Rathor wrote:
> > > Trying to migrate a 64bit PV guest with 64GB running medium to
> > > heavy load on xen 3.4.0, it is showing lot of soft lockups. The
> > > softlockups are causing dom0 reboot by the cluster FS. The
> > > hardware has 256GB and 32 CPUs.
> > >
> > > Looking into the hypervisor thru kdb, I see one cpu in
> > > sh_resync_all() while all other 31 appear spinning on the
> > > shadow_lock.
> >
> > How many vcpus does the guest have? Scalability issues in the OOS
> > shadow code are more related to number of VCPUs than amount of RAM.
>
> Actually, things are fine with 32GB/32vcpus. Problem happens with
> 64GB/32vcpus. Trying the unstable version now.
Nah, with c/s 20365 and oos=0 in vm.cfg, it fails right away:
[root@OVM_EL5U3_X86_64_PVM_4GB]# xm migrate -l 3 vega7183
Error: /usr/lib/xen/bin/xc_save 82 3 0 0 1 failed
On source xend.log:
[2009-09-23 16:22:33 16993] DEBUG (balloon:181) Balloon: 199147540 KiB free;
need 16384; done.
[2009-09-23 16:22:34 16993] DEBUG (XendCheckpoint:110) [xc_save]:
/usr/lib/xen/bin/xc_save 82 3 0 0 1
[2009-09-23 16:22:34 16993] INFO (XendCheckpoint:418) xc_save: failed to get
the suspend evtchn port
[2009-09-23 16:22:34 16993] INFO (XendCheckpoint:418)
[2009-09-23 16:22:34 16993] INFO (XendCheckpoint:418) ERROR Internal error:
xc_get_m2p_mfns
[2009-09-23 16:22:34 16993] INFO (XendCheckpoint:418) ERROR Internal error:
Failed to map live M2P table
[2009-09-23 16:22:34 16993] INFO (XendCheckpoint:418) Save exit rc=1
[2009-09-23 16:22:34 16993] ERROR (XendCheckpoint:164) Save failed on domain
OVM_EL5U3_X86_64_PVM_4GB (3) - resuming.
on TARGET looks pretty screwy:
domain', ['domid', '3'], ['on_crash', 'restart'], ['uuid',
'b990db11-57f4-a553-5ee0-c022234f3dd5'], ['bootloader_args', '-q'], ['vcpus',
'32'], ['name', 'OVM_EL5U3_X86_64_PVM_4GB'], ['on_poweroff', 'destroy'],
['on_reboot', 'restart'], ['cpus', [['0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20',
'21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31'], ['0', '1',
'2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15',
'16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28',
'29', '30', '31'], ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10',
'11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23',
'24', '25', '26', '27', '28', '29', '30', '31'], ['0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19',
'20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31'], ['0',
'!
1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14',
'15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27',
'28', '29', '30', '31'], ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22',
'23', '24', '25', '26', '27', '28', '29', '30', '31'], ['0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', '10', '11', '12', '13', '14', '15', '16', '17',
'18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30',
'31'], ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '10', '11', '12',
'13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25',
'26', '27', '28', '29', '30', '31'] .......
..........
[2009-10-23 16:21:15 11795] DEBUG (image:319) No VNC passwd configured for vfb
access
[2009-10-23 16:21:15 11795] DEBUG (XendCheckpoint:261) restore:shadow=0x0,
_static_max=0xfa0000000, _static_min=0x0,
[2009-10-23 16:21:15 11795] DEBUG (balloon:181) Balloon: 264942044 KiB free;
need 65536000; done.
[2009-10-23 16:21:15 11795] DEBUG (XendCheckpoint:278) [xc_restore]:
/usr/lib/xen/bin/xc_restore 4 3 1 2 0 0 0
[2009-10-23 16:21:15 11795] INFO (XendCheckpoint:418) ERROR Internal error:
read: p2m_size
[2009-10-23 16:21:15 11795] INFO (XendCheckpoint:418) Restore exit with rc=1
[2009-10-23 16:21:15 11795] DEBUG (XendDomainInfo:2748) XendDomainInfo.destroy:
domid=3
[2009-10-23 16:21:15 11795] ERROR (XendDomainInfo:2762) XendDomainInfo.destroy:
domain destruction failed.
Traceback (most recent call last):
File "/usr/lib/python2.4/site-packages/xen/xend/XendDomainInfo.py", line
2755, in destroy
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