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Old 04-12-2012, 05:40 PM
Peter Viskup
 
Default Xen memory management not working

Hello everyone,
we have issue with memory increase for virtual servers on one of our
boxes. We are running Debian Squeeze and Xen 4.0.
Looks like after last upgrade of xen-utils-4.0 and xenstore-utils
without upgrade of xen-hypervisor and linux-image packages the memory
management stopped working.


server2:~# xm list tis

Name ID Mem VCPUs State Time(s)

tis 62 1024 2 -b---- 392680.7

server2:~# xm mem-set tis 2048

server2:~# xm list tis

Name ID Mem VCPUs State Time(s)

tis 62 2048 2 -b---- 392680.9


The target_kb value changed on VPS, but the available memory didn't
increased for some unknown reason:


tis:~# cat /sys/devices/system/xen_memory/xen_memory0/target_kb

1048576

tis:~# cat /sys/devices/system/xen_memory/xen_memory0/target_kb

2097152

tis:~# grep MemTotal /proc/meminfo

MemTotal: 1044316 kB


Xen packages installed on dom0:

server2:~# dpkg -l | grep xen

ii libxenstore3.0 4.0.1-4 Xenstore communications library for Xen

ii linux-image-2.6-xen-amd64 2.6.32+29 Linux 2.6 for 64-bit PCs (meta-package), Xen dom0 support

ii linux-image-2.6.26-2-xen-amd64 2.6.26-26lenny2 Linux 2.6.26 image on AMD64, oldstyle Xen support

ii linux-image-2.6.32-5-xen-amd64 2.6.32-38 Linux 2.6.32 for 64-bit PCs, Xen dom0 support

ii linux-modules-2.6-xen-amd64 2.6.26+17+lenny1 Linux 2.6 modules on AMD64

ii linux-modules-2.6.26-2-xen-amd64 2.6.26-26lenny2 Linux 2.6.26 modules on AMD64

ii xen-hypervisor-3.2-1-amd64 3.2.1-2 The Xen Hypervisor on AMD64

ii xen-hypervisor-4.0-amd64 4.0.1-4 The Xen Hypervisor on AMD64

ii xen-qemu-dm-4.0 4.0.1-2 Xen Qemu Device Model virtual machine hardware emulator

ii xen-shell 1.8-3 Console based Xen administration utility

ii xen-tools 4.2-1 Tools to manage Xen virtual servers

ii xen-utils-4.0 4.0.1-4 XEN administrative tools

ii xen-utils-common 4.0.0-1 XEN administrative tools - common files

ii xenstore-utils 4.0.1-4 Xenstore utilities for Xen

ii xenwatch 0.5.4-2 Virtualization utilities, mostly for Xen

server2:~# uname -a

Linux server2 2.6.32-5-xen-amd64 #1 SMP Mon Oct 3 07:53:54 UTC 2011 x86_64 GNU/Linux

And kernel version on domU:

tis:~# uname -a

Linux tis 2.6.32-5-xen-amd64 #1 SMP Mon Oct 3 07:53:54 UTC 2011 x86_64 GNU/Linux


Could anybody point me to deeper investigation of this strange issue and
if not - is there any way to get packages of xen-utils-4.0 and
xenstore-utils before the upgrade to latest version?


Best regards,
--
Peter Viskup


--
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Old 04-22-2012, 04:49 PM
Peter Viskup
 
Default Xen memory management not working

Hello everyone,
we have issue with memory increase for virtual servers on one of our
boxes. We are running Debian Squeeze and Xen 4.0.
Looks like after last upgrade of xen-utils-4.0 and xenstore-utils
without upgrade of xen-hypervisor and linux-image packages the memory
management stopped working.


server2:~# xm list tis
Name ID Mem VCPUs State
Time(s)
tis 62 1024 2 -b----
392680.7


server2:~# xm mem-set tis 2048
server2:~# xm list tis
Name ID Mem VCPUs State
Time(s)
tis 62 2048 2 -b----
392680.9


The target_kb value changed on VPS, but the available memory didn't
increased for some unknown reason:


tis:~# cat /sys/devices/system/xen_memory/xen_memory0/target_kb
1048576

tis:~# cat /sys/devices/system/xen_memory/xen_memory0/target_kb
2097152

tis:~# grep MemTotal /proc/meminfo
MemTotal: 1044316 kB

Xen packages installed on dom0:

server2:~# dpkg -l | grep xen
ii libxenstore3.0 4.0.1-4
Xenstore communications library for Xen
ii linux-image-2.6-xen-amd64 2.6.32+29
Linux 2.6 for 64-bit PCs (meta-package), Xen dom0 support
ii linux-image-2.6.26-2-xen-amd64 2.6.26-26lenny2
Linux 2.6.26 image on AMD64, oldstyle Xen support
ii linux-image-2.6.32-5-xen-amd64 2.6.32-38
Linux 2.6.32 for 64-bit PCs, Xen dom0 support
ii linux-modules-2.6-xen-amd64 2.6.26+17+lenny1
Linux 2.6 modules on AMD64
ii linux-modules-2.6.26-2-xen-amd64 2.6.26-26lenny2
Linux 2.6.26 modules on AMD64
ii xen-hypervisor-3.2-1-amd64 3.2.1-2
The Xen Hypervisor on AMD64
ii xen-hypervisor-4.0-amd64 4.0.1-4
The Xen Hypervisor on AMD64
ii xen-qemu-dm-4.0 4.0.1-2
Xen Qemu Device Model virtual machine hardware emulator
ii xen-shell 1.8-3
Console based Xen administration utility
ii xen-tools 4.2-1
Tools to manage Xen virtual servers
ii xen-utils-4.0 4.0.1-4
XEN administrative tools
ii xen-utils-common 4.0.0-1
XEN administrative tools - common files
ii xenstore-utils 4.0.1-4
Xenstore utilities for Xen
ii xenwatch 0.5.4-2
Virtualization utilities, mostly for Xen


server2:~# uname -a
Linux server2 2.6.32-5-xen-amd64 #1 SMP Mon Oct 3 07:53:54 UTC 2011
x86_64 GNU/Linux


And kernel version on domU:

tis:~# uname -a
Linux tis 2.6.32-5-xen-amd64 #1 SMP Mon Oct 3 07:53:54 UTC 2011 x86_64
GNU/Linux


Could anybody point me to deeper investigation of this strange issue and
if not - is there any way to get packages of xen-utils-4.0 and
xenstore-utils before the upgrade to latest version?


Best regards,
--
Peter Viskup


--
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org

Archive: 4F94369C.6010206@gmail.com">http://lists.debian.org/4F94369C.6010206@gmail.com
 
Old 04-23-2012, 01:01 AM
Bob Proulx
 
Default Xen memory management not working

Peter Viskup wrote:
> The target_kb value changed on VPS, but the available memory didn't
> increased for some unknown reason:

You didn't say... Have you rebooted your VM since then?

Bob
 
Old 04-23-2012, 06:20 AM
Peter Viskup
 
Default Xen memory management not working

On 04/23/2012 03:01 AM, Bob Proulx wrote:
You didn't say... Have you rebooted your VM since then? Bob

Hi Bob,
yes I did and the behavior didn't changed.

--
Peter


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