Re: [Xen-devel] More Xen troubles (with xend this time)

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Unfortunately when a domain crashes it seems to confuse xend such that
it isn't even restartable. So then you need to reboot the
machine. Clearly this needs looking into. :-)

 -- Keir

> 
> When trying to reproduce a crash (when I do "xm restore foo.xen", the 
> restored VM crashed instantaneously), I hit the following "bug" (I hope 
> that the problem lies between my keyboard and my chair and that I didn't 
> find another real bug) :
> 
> I did restore the domain, then noticed it was crashed ("-----c" in xm 
> list). I tried to destroy it, but it didn't work. So I stopped xend, 
> restarted it ... And there it goes :
> 
> isnpro:~# xm list
> (111, 'Connection refused')
> Error: Error connecting to xend, is xend running?
> 
> isnpro:~# xend start
> 
> isnpro:~# xm list
> (111, 'Connection refused')
> Error: Error connecting to xend, is xend running?
> 
> isnpro:~# ps aux | grep x
> root       644  0.0  0.0     0    0 ?        S    Nov29   0:02 [xenblkd]
> root     14003  0.0  1.8  4308 1112 ?        S    14:37   0:00 xfrd
> 
> isnpro:~# lsof | grep LISTEN
> portmap     970      daemon    4u  IPv4       2122                TCP 
> *:sunrpc (LISTEN)
> exim4      1113 Debian-exim    0u  IPv4       2291                TCP 
> localhost:smtp (LISTEN)
> inetd      1119        root    4u  IPv4       2304                TCP 
> *:discard (LISTEN)
> inetd      1119        root    6u  IPv4       2306                TCP 
> *:daytime (LISTEN)
> inetd      1119        root    7u  IPv4       2307                TCP 
> *:time (LISTEN)
> sshd       1129        root    3u  IPv4       2329                TCP 
> *:ssh (LISTEN)
> rpc.statd  1135        root    6u  IPv4       2369                TCP 
> *:893 (LISTEN)
> xfrd      14003        root    2u  IPv4     274713                TCP 
> *:8002 (LISTEN)
> 
> isnpro:~# tail /var/log/xend.log
> [2004-11-30 14:17:00 xend] INFO (XendRoot:91) EVENT> xend.domain.exit 
> ['xipetotec', '22', 'crash']
> [2004-11-30 14:17:00 xend] INFO (XendRoot:91) EVENT> xend.domain.destroy 
> ['xipetotec', '22']
> [2004-11-30 14:17:28 xend] INFO (SrvDaemon:607) Xend Daemon started
> [2004-11-30 14:18:35 xend] INFO (SrvDaemon:607) Xend Daemon started
> [2004-11-30 14:19:57 xend] INFO (SrvDaemon:607) Xend Daemon started
> [2004-11-30 14:23:45 xend] INFO (SrvDaemon:607) Xend Daemon started
> [2004-11-30 14:25:46 xend] INFO (SrvDaemon:607) Xend Daemon started
> [2004-11-30 14:31:43 xend] INFO (SrvDaemon:607) Xend Daemon started
> [2004-11-30 14:31:54 xend] INFO (SrvDaemon:607) Xend Daemon started
> [2004-11-30 14:37:40 xend] INFO (SrvDaemon:607) Xend Daemon started
> 
> (many "Xend Daemon started" messages since I tried many times to restart 
> it...)
> 
> So I thought that xfrd (xend?) was running on port 8002 instead of 8000, 
> and I tried to setup a redir (who knows!) :
> 
> isnpro:~# redir --cport 8002 --lport 8000  &
> [1] 14025
> isnpro:~# xm list
> Traceback (most recent call last):
>   File "/usr/sbin/xm", line 9, in ?
>     main.main(sys.argv)
>   File 
> "/root/Xen/xen-2.0-testing.bk/dist/install/lib/python/xen/xm/main.py", 
> line 795, in main
>   File 
> "/root/Xen/xen-2.0-testing.bk/dist/install/lib/python/xen/xm/main.py", 
> line 106, in main
>   File 
> "/root/Xen/xen-2.0-testing.bk/dist/install/lib/python/xen/xm/main.py", 
> line 124, in main_call
>   File 
> "/root/Xen/xen-2.0-testing.bk/dist/install/lib/python/xen/xm/main.py", 
> line 343, in main
> AttributeError: 'str' object has no attribute 'sort'
> 
> Okay, it seems it wasn't a very clever idea after all.
> 
> What should I try now ? (I don't want to reboot the thing yet, since the 
> virtual domains are still running and I can't stop them right now).
> 
> 
> 
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