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AW: AW: [Xen-devel] Migration Problem to Localhost

Yes, i just have read about this.

I configured ech machine in the same way.

[root@ingpcxen002 scripts]# netstat -nl | grep 8002
tcp 0 0 0.0.0.0:8002 0.0.0.0:* LISTEN
[root@ingpcxen002 scripts]#

[root@ingpcxen002 ~]#
[root@ingpcxen002 ~]#
[root@ingpcxen002 ~]# telnet 148.191.190.3 8002
Trying 148.191.190.3...
Connected to ingpcxen002.ing.de.bic (148.191.190.3).
Escape character is '^]'.

an then it hangs, nothing happens. Migration will also not work!

Thomas Diederich

**************************************************
* Boehringer Ingelheim Pharma GmbH & Co.KG
* A Informationsverarbeitung / Diplomant Systemtechnik
*
* Mail: diederit@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
* Phone: +49 (0)6132/77-98151

-----Ursprüngliche Nachricht-----
Von: Rami Rosen [mailto:rosenrami@xxxxxxxxx]
Gesendet: Donnerstag, 24. November 2005 17:26
An: DIEDERIT@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: Steven.Hand@xxxxxxxxxxxx; xen-devel@xxxxxxxxxxxxxxxxxxx
Betreff: Re: AW: [Xen-devel] Migration Problem to Localhost

Hello,

>But why won't migrating to another Host work?

1) What is the error log you get in /var/log/xend.log

If you get in the command line:
"Error: can't connect: Connection refused"
there are chances that /etc/xen/xend-config.sxp is not
configured right on the other side (to which you want to migrate).
see my answer in
http://lists.xensource.com/archives/html/xen-users/2005-11/msg00391.html

2) I added today some details on migration and migration
configuration in my XenIntro wiki page:

http://wiki.xensource.com/xenwiki/XenIntro

Regards,
Rami Rosen

On 11/24/05, DIEDERIT@xxxxxxxxxxxxxxxxxxxxxxxxxxxx < DIEDERIT@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

But why won't migrating to another Host work?
Same subnet!!!?!?!?

Thomas Diederich

**************************************************
*  Boehringer Ingelheim Pharma GmbH & Co.KG
*  A Informationsverarbeitung / Diplomant Systemtechnik
*
*  Mail: diederit@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
*  Phone: +49 (0)6132/77-98151

-----Ursprüngliche Nachricht-----
Von: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx]
Gesendet: Donnerstag, 24. November 2005 15:50
An: Steven.Hand@xxxxxxxxxxxx; DIEDERIT@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Betreff: AW: AW: [Xen-devel] Migration Problem to Localhost

Ok,
That does the job! THX!

Thomas Diederich

**************************************************
*  Boehringer Ingelheim Pharma GmbH & Co.KG
*  A Informationsverarbeitung / Diplomant Systemtechnik
*
*  Mail: diederit@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
*  Phone: +49 (0)6132/77-98151

-----Ursprüngliche Nachricht-----
Von: Steven Hand [mailto: Steven.Hand@xxxxxxxxxxxx]
Gesendet: Donnerstag, 24. November 2005 15:38
An: DIEDERIT@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Betreff: Re: AW: [Xen-devel] Migration Problem to Localhost

> Here is my xend.log:
> I Think the problem is this ([2005-11-24 14:54:36 xend] ERROR
> (XendCheckpoint:218) Had 0 unexplained entries in p2m table) line.

Nope - this is not an error at all in fact, just verbose debug output
from the xc_save process.

The real error is:

> [2005-11-24 14:54:36 xend] DEBUG (XendCheckpoint:139) [xc_restore]:
> /usr/lib/xen/bin/xc_restore 15 21 5 58368 1 2
>
> [2005-11-24 14:54:36 xend] ERROR (XendCheckpoint:218) xc_linux_restore
> start: max_pfn = e400
>
> [2005-11-24 14:54:36 xend] ERROR (XendCheckpoint:218) Failed allocation
for
> dom 5: 58368 pages order 0 addr_bits 0
>
> [2005-11-24 14:54:36 xend] ERROR (XendCheckpoint:218) Failed to increase
> reservation by 39000 KB
>
> [2005-11-24 14:54:36 xend] ERROR (XendCheckpoint:218) Restore exit with
rc=1

Basically this means that you didn't have enough memory to do the
migrate (during a migrate of a domain of size xMB, you temporarily
need to have a spare x+8 MB free.)

The error handling / error message could certainly usefully be
improved :-)

cheers,

S.

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