Anzi wrote:
> Anzi wrote:
>> Hi,
>>
>> In the weekend I had trouble with netbsd / xen. Console showed 
>> following text and xen guestdomains where not accessible from 
>> network. Also Dom0 not allowed ssh login, only ping worked. Finally I 
>> had to reboot machine from powerswitch.
>> I think that problem started somewhere where automated rootfilesystem 
>> snapshot was being made or copied to NFS.
>>
>> This was in the /var/log/messages (I copied only the relevant parts):
>>
>> Mar  4 00:34:01 xenbsd /netbsd: nfs server nfsHOST:/LinuxBackup: not 
>> responding
>> Mar  4 00:34:01 xenbsd /netbsd: nfs server nfsHOST:/LinuxBackup: is 
>> alive again
>> Mar  4 00:36:16 xenbsd /netbsd: nfs server nfsHOST:/LinuxBackup: not 
>> responding
>> Mar  4 00:36:16 xenbsd /netbsd: nfs server nfsHOST:/LinuxBackup: is 
>> alive again
>> Mar  4 00:39:39 xenbsd /netbsd: nfs server nfsHOST:/LinuxBackup: not 
>> responding
>> Mar  4 00:39:39 xenbsd /netbsd: nfs server nfsHOST:/LinuxBackup: is 
>> alive again
>>
>> Mar  4 00:41:13 xenbsd /netbsd: xennetback: got only 14 new mcl pages
>>
>> Mar  4 00:41:53 xenbsd /netbsd: xennetback: can't get new mcl pages (0)
>> Mar  4 00:41:53 xenbsd /netbsd: xennetback_ifstart: no mcl_pages
>> Mar  4 00:41:53 xenbsd /netbsd: xennetback: can't get new mcl pages (0)
>> Mar  4 00:41:53 xenbsd /netbsd: xennetback_ifstart: no mcl_pages
>> Mar  4 00:41:53 xenbsd /netbsd: xennetback: can't get new mcl pages (0)
>> Mar  4 00:41:53 xenbsd /netbsd: xennetback_ifstart: no mcl_pages
>> Mar  4 00:41:53 xenbsd /netbsd: s
>> Mar  4 00:41:53 xenbsd /netbsd: xennetback: can't get new mcl pages (0)
>> Mar  4 00:41:53 xenbsd /netbsd: xennetback_ifstart: no mcl_pages
> The rest of the original message should continue (I don't know where 
> message gets cutted..):
>
> Mar  4 00:41:53 xenbsd /netbsd: xennetback_ifstart: no mcl_pages
> Mar  4 00:41:53 xenbsd /netbsd: nnetback_ifstart: no mcl_pages
Again rest of the message (?):

Kernel is not default, I have compiled it myself, but I think there are 
no exotic things:
NetBSD xenbsd.domain.com 4.0_BETA2 NetBSD 4.0_BETA2 (XEN3_DOM0) #0: Fri 
Jan 19 14:46:24 EET 2007  
@xenbsd.domain.com:/home/--/current/src/sys/arch/i386/compile/obj/XEN3_DOM0_ 
i386

I also tried Kernel debugger (CTRL+ALT+ESC), but I'm really not sure 
what to do there. tried next/continue and this is what I got:
Just before kernel prints xennetback_ifstart: no mcl_pages
this is executed:
Xennetback ifsoftstart+0x76b:ret


This was on a production machine so I couldn't debug more (I rebooted). 
Does anybody have Ideas what seems to be wrong?

-Anzi-