[Libvir] can't start windows guest domains

[Thomas Antony]

> 'Blocked' is the normal state (unless you mean 'Paused').  Domains are 
> only 'Running' when they are using CPU.
Doesn't a guest domain (or any OS) always use CPU, at least 0,01% or 
something similiar?
For example i'm running a Windows SBS 2003 as Domain Controller with 
Sharepoint Services and Exchange Server and virsh list tells me the 
domain is blocked.

> 
> Can you ping the domains (if they have a network connection)?  Or view 
> their console?
I can access the domains with vnc.
Since i undefined and redefined all domains i can't ping the guest from 
the host and when i am connected with vnc i can't ping anything. The 
windows guest does have a nic and has an ip in the same network as the 
the host.
It should be a bridge setup.

<interface type='bridge'>
       <source bridge='virbr0'/>
       <target dev='vif6.0'/>
       <mac address='00:16:3e:33:eb:7b'/>
       <script path='vif-bridge'/>
</interface>

ifconfig tells me there is a peth0, tap, virbr0 and vif6.0 interface.


> 
>> I'm running F7 on a Dell PE2950 with 8GB RAM.
>> It would be nice if you could explain how much RAM i should allocate 
>> to Dom0 and what are the minimum requirements for Dom0.
> 
> I would expect that allocating 512 MB to Dom0 as you did should be 
> sufficient (unless it's running a huge database or something like that).
> 
> The problem, though, isn't likely to be the allocation, but the fact 
> that you are using 'virsh setmaxmem' to balloon it down from something 
> larger to 512 MB.  In any case, I'm not sure what the problem is - 
> unless you can find something in a logfile, it's hard to tell.
> 

After i allocated 512MB RAM to Dom0 the kernel printed many out of 
memory messages like this and began to kill services.


Sep 11 08:54:04 srv1 kernel: mysqld invoked oom-killer: 
gfp_mask=0x200d2, order=0, oomkilladj=0
Sep 11 08:54:04 srv1 kernel:
Sep 11 08:54:05 srv1 kernel: Call Trace:
Sep 11 08:54:05 srv1 kernel:  [<ffffffff802b17e6>] out_of_memory+0x6d/0x1ce
Sep 11 08:54:05 srv1 kernel:  [<ffffffff8020ef31>] __alloc_pages+0x23e/0x2c7
Sep 11 08:54:05 srv1 kernel:  [<ffffffff802329cb>] 
read_swap_cache_async+0x42/0xd1
Sep 11 08:54:05 srv1 kernel:  [<ffffffff802b515b>] 
swapin_readahead+0x4e/0x77
Sep 11 08:54:05 srv1 kernel:  [<ffffffff8020984a>] 
__handle_mm_fault+0xcad/0x1182
Sep 11 08:54:05 srv1 kernel:  [<ffffffff80262de5>] 
do_page_fault+0xf23/0x128d
Sep 11 08:54:05 srv1 kernel:  [<ffffffff802c6d22>] 
core_sys_select+0x1bb/0x264
Sep 11 08:54:05 srv1 kernel:  [<ffffffff80260827>] error_exit+0x0/0x79
Sep 11 08:54:05 srv1 kernel:  [<ffffffff80270798>] 
xen_send_IPI_mask+0x0/0xd2
Sep 11 08:54:05 srv1 kernel:  [<ffffffff8025cd87>] 
copy_user_generic_string+0x17/0x40
Sep 11 08:54:05 srv1 kernel:  [<ffffffff80216884>] sys_select+0x11c/0x17c
Sep 11 08:54:11 srv1 kernel:  [<ffffffff8025b2ff>] tracesys+0xb2/0xb7
Sep 11 08:54:12 srv1 kernel:
Sep 11 08:54:12 srv1 kernel: Mem-info:
Sep 11 08:54:12 srv1 kernel: DMA per-cpu:
Sep 11 08:54:12 srv1 kernel: CPU    0: Hot: hi:  186, btch:  31 usd: 157 
   Cold: hi:   62, btch:  15 usd:  48
Sep 11 08:54:13 srv1 kernel: CPU    1: Hot: hi:  186, btch:  31 usd: 117 
   Cold: hi:   62, btch:  15 usd:  11
Sep 11 08:54:13 srv1 kernel: CPU    2: Hot: hi:  186, btch:  31 usd:  30 
   Cold: hi:   62, btch:  15 usd:  48
Sep 11 08:54:13 srv1 kernel: CPU    3: Hot: hi:  186, btch:  31 usd: 171 
   Cold: hi:   62, btch:  15 usd:  47
Sep 11 08:54:13 srv1 kernel: Active:72 inactive:83 dirty:0 writeback:127 
unstable:0 free:2834 slab:5953 mapped:76 pagetables:2898
Sep 11 08:54:14 srv1 kernel: DMA free:11336kB min:11324kB low:14152kB 
high:16984kB active:288kB inactive:368kB present:8019468kB 
pages_scanned:100 all_unrecl
aimable? no
Sep 11 08:54:14 srv1 kernel: lowmem_reserve[]: 0 0 0
Sep 11 08:54:14 srv1 kernel: DMA: 14*4kB 4*8kB 3*16kB 0*32kB 1*64kB 
1*128kB 1*256kB 1*512kB 0*1024kB 1*2048kB 2*4096kB = 11336kB
Sep 11 08:54:14 srv1 kernel: Swap cache: add 50937, delete 50841, find 
216/359, race 0+0
Sep 11 08:54:14 srv1 kernel: Free swap  = 8123812kB
Sep 11 08:54:14 srv1 kernel: Total swap = 8323064kB
Sep 11 08:54:14 srv1 kernel: Free swap:       8123812kB
Sep 11 08:54:14 srv1 kernel: dsm_sa_datamgr3 invoked oom-killer: 
gfp_mask=0x201d2, order=0, oomkilladj=0
Sep 11 08:54:14 srv1 kernel:
Sep 11 08:54:21 srv1 kernel: Call Trace:
...
...
...



Thomas