Xen Administrator Console doesn't connect to XenServer

If Xen Administrator Console doesn't connect to XenServer or just hanged on than one needs to restart xenagentd daemon:

# service xenagentd restart

iRODS installation

Run under ordinary user, i.e. irodsmgr;
Create folder for irods and iRodsPostgress and change owner to irodsmgr;
Run install.pl and answer no on first question;
Edit irods/install/install.config:
set
$ADMIN_PW
$RESOURCE_NAME
variables
and uncomment $LOCALHOST="yes";
Run install.pl again.

Requirements for iRods and Postgress:
gcc and dependencies
gcc-c++ and dependencies

Xen P2V conversion

1. Shutdown a VM
2. Power off the VM
   
3. Change HVM status to Enable and put XenServer.iso into CDROM
4. Power on the VM
5. Follow the conversion procedure
6. Power off the old VM
7. Rename the new VM
8. Change MAC address
9. Boot first time
10. Switch off SELinux in /etc/selinux/config
11. Reboot the VM
12. Done.
    

Optimize MySQL table

OPTIMIZE TABLE should be used if you have deleted a large part of a table or if you have made many changes to a table with variable-length rows (tables that have VARCHAR, VARBINARY, BLOB, or TEXT columns).

For Sakai database the largest table is CONTENT_RESOURCE_BODY_BINARY.MYI
It keeps all files uploaded to Resources Tool. After deleting some files from Resources this table might be fragmented. To optimize its internal structure it's possible to use a mysql command:

optimize table CONTENT_RESOURCE_BODY_BINARY;

or mysql utility:

myisamchk -r --sort-index --analyze \
CONTENT_RESOURCE_BODY_BINARY.MYI

Option -o (--safe-recover) instead of -r should be used if there is an error:

myisamchk: error: sort_buffer_size is to small

AIX: File too large

It happens when file size large then user's limit. To see limits use a command

# ulimit -a

Change limits:

/etc/security/limits

Networking in XEN

During last startup of the Gateway server after last Saturday relocation I realized that network interfaces should be UP on boot.

network-bridges custom script:

#!/bin/sh
/etc/xen/scripts/network-bridge.orig $1 netdev=eth0 bridge=xenbr0 vifnum=0
/etc/xen/scripts/network-bridge.orig $1 netdev=eth1 bridge=xenbr1 vifnum=1
/etc/xen/scripts/network-bridge.orig $1 netdev=eth2 bridge=xenbr2 vifnum=2
/etc/xen/scripts/network-bridge.orig $1 netdev=eth3 bridge=xenbr3 vifnum=3
/etc/xen/scripts/network-bridge.orig $1 netdev=eth4 bridge=xenbr4 vifnum=4
/etc/xen/scripts/network-bridge.orig $1 netdev=eth5 bridge=xenbr5 vifnum=5
route add default gw 130.216.189.254

This script calls original network-bridge.orig script from Xen installation. In such sequence all bridges started up correct and all interfaces work well. It is called from xend configuration file during xend loading.

No space left on device /dev/null

If it's impossible to copy a file with a size more than a particular volume then very likely the reason of that that /dev/null has been overwritten by ordinary file:

# cat 1GB > /dev/null
cat: write error: No space left on device

A solution is to recreate /dev/null as a character file:

> rm -f /dev/null (get rid of the file I had put there)
> mknod /dev/null c 1 3 (some unix magic: char device, major #, minor #)
> chmod a+w /dev/null (permissions)

It works.

BG2 - First Virtual Server

The specifications for the server are fairly minimal see below:…I suggest 1.5GB of RAM for the Windows 2003 Web/Nesstar server .

We should allow at least 2GB for all future servers.


Web/Nesstar server Hardware/Software Requirements:
Windows XP, 2000 or NT4.
Windows Server 2003
All Service Pack updates should be installed. (If you experience problems with the installation under NT4, check that the video drivers are up to date).
1GB of RAM (more is preferable)
1 GHz CPU or better. A biprocessor machine can be useful, especially during upgrading when the new and the old server might be running side-by-side.
Accessing WebView requires a web browser which is set to accept cookies and is
JavaScript enabled. Security and privacy settings should be set to accommodate this
requirement.
IIS (Internet Information Server) versions 5 or 6:
To install a Nesstar Server on a secondary IP address, please refer to the Nesstar
document on socket pooling.

BeSTGRID Server 2

To configure and install appropriate software:

1. Download Xen Enterprise
2. Acquire a license for the Server
3. Acquire Windows Server 2003 distributive
4. Apply for IP pool
5. Acquire empty CDs
   
6. Burn CDs with Xen images
7. Configure RAIDs on BeSTGRID2
8. Install Xen Enterprise on BG2
9. Install Admin Console on my PC
10. Install WinServer2003 on first VM
11. Create VMs for WAYF and OpenIdP

All done!

Start/Stop Samba

Now I've added Samba as a subsystem:

# mkssys -s smbd -p /opt/pware/samba/3.0.24/sbin/smbd -a "-D" -u 0

and on default it should start automatically during the system boot. If it isn't started try first:

# startsrc -s smbd

if unsuccessful try next:

# /opt/pware/samba/3.0.24/sbin/smbd -D

Other option is to use files:
/etc/rc.d/rc2.d/Ssmbd
/etc/rc.d/rc2.d/Ksmbd
Now they are in /home/akha103

AVOIDING Disk Crashes

1. Rule One: don't let this stop your system
* RAID5 or mirror everything
2. Rule Two: monitor error logs
* Make sure you know when a disk failed
3. Rule Three: call hardware support
* That is what they are for
4. Rule Four: Don't meddle
* Only try, if you know what you are doing
5. Rule Five: Read and practise
* Get the Redbooks and try it safely

Formatted list of active Volume groups

for i in $(lsvg);do lsvg $i;done \
| awk ' BEGIN { printf("%10s\t%10s\t%10s\t%10s\t%10s\n","VG","Total(MB)","Free","USED","Disks") };/VOLUME GROUP:/ \
{ printf("%10s\t", $3) };/TOTAL PP/ { B=index($0,"(") + 1;E=index($0," megaby");D=E-B;printf("%10s\t", substr($0,B,D) );};/FREE PP/ \
{ B=index($0,"(") + 1;E=index($0," megaby");D=E-B;printf("%10s\t", substr($0,B,D) );};/USED PP/ \
{ B=index($0,"(") + 1;E=index($0," megaby");D=E-B;printf("%10s\t", substr($0,B,D) );};/ACTIVE PV/ { printf("%10s\t\n", $3) } '

emails from NGData has root@bestgrid30.math.auckland.ac.nz in From:

All emails from NGData has root@bestgrid30.math.auckland.ac.nz in From: field.

The reason of that is I created CNAME ngdata.auckland.ac.nz for data.bestgrid.org (bestgrid30.math.auckland.ac.nz) long time ago. And in revers lookup mail server finds bestgrid30 as a sender domain.

I've applied to move ngdata.auckland.ac.nz from bg30 to bg4.

UPD: Fixed on 27.07.2007

Use correct CPU number

#!/bin/bash
#PBS -u user_name
#PBS -l nodes=1:ppn=8
#PBS -o $PBS_JOBNAME.out
#PBS -e $PBS_JOBNAME.err

#How many procs do I have?
NP=$(wc -l $PBS_NODEFILE | awk '{print $1}')

#cd into the directory where I typed qsub cd $PBS_O_WORKDIR

#run executable
mpiexec -np $NP executable

Pre-install of any APAC packages.

Pre-install of any APAC packages.
Edit to enable centosrepo:
# nano /etc/yum.repos.d/CentOS-Base.repo

# rpm --import http://mirror.centos.org/centos/4/os/i386/RPM-GPG-KEY-centos4
# cd /etc/yum.repos.d && wget http://www.grid.apac.edu.au/repository/dist/APAC-Grid.repo
# yum install Gpulse Gbuild

Check hostcert.*
openssl x509 -in hostcert.pem -noout -modulus
openssl rsa -in hostkey.pem -noout -modulus

Build NGData
/usr/local/sbin/BuildNgdataVdt161.sh

NGData ToDo

- set yum repos to VPAC
- install certificate
- install Gbuild
- install NGData

Current Disk Space Allocation on GateWay

XENHOST

Filesystem Size Used Avail Use% Mounted on
/dev/sda1 9.7G 1.2G 8.0G 14% /
/dev/sda3 56G 5.1G 48G 10% /home

VMHOST

VG #PV #LV #SN Attr VSize VFree
VolumeGroup00 1 29 0 wz--n- 409.84G 326.43G

LV VG Attr LSize
GridSphereR VolumeGroup00 -wi-ao 2.00G
GridSphereS VolumeGroup00 -wi-ao 512.00M
LanguageR VolumeGroup00 -wi-ao 2.00G
LanguageS VolumeGroup00 -wi-ao 512.00M
NG2Root VolumeGroup00 -wi-ao 16.00G
NG2Swap VolumeGroup00 -wi-ao 512.00M
OpenIdpR VolumeGroup00 -wi-ao 2.00G
OpenIdpS VolumeGroup00 -wi-ao 512.00M
SRSData VolumeGroup00 -wi-ao 20.00G
SRSRoot VolumeGroup00 -wi-ao 1.50G
SRSSwap VolumeGroup00 -wi-ao 512.00M
SakaiR VolumeGroup00 -wi-ao 8.00G
SakaiS VolumeGroup00 -wi-ao 512.00M
SakaitR VolumeGroup00 -wi-a- 8.00G
SakaitS VolumeGroup00 -wi-a- 512.00M
ServicesR VolumeGroup00 -wi-ao 4.00G
ServicesS VolumeGroup00 -wi-ao 512.00M
SolverR VolumeGroup00 -wi-ao 1.49G
SolverS VolumeGroup00 -wi-ao 512.00M
SolverU VolumeGroup00 -wi-ao 1.50G
VreR VolumeGroup00 -wi-ao 2.00G
VreS VolumeGroup00 -wi-ao 512.00M
VreU VolumeGroup00 -wi-ao 1.50G
WayfR VolumeGroup00 -wi-ao 2.00G
WayfS VolumeGroup00 -wi-ao 512.00M
WikiProdR VolumeGroup00 -wi-ao 2.93G
WikiProdS VolumeGroup00 -wi-ao 512.00M
WikiR VolumeGroup00 -wi-ao 2.00G
WikiS VolumeGroup00 -wi-ao 512.00M

Auckland is in APAC!!!

ng2.auckland.ac.nz is in APAC structure now!!!

It is in GOC database: http://goc.grid.apac.edu.au/

AUCKLAND site in APAC MDS/MIP database:
http://www.sapac.edu.au/webmds/webmds?info=indexinfo&xsl=apacgluexsl
Seek 'AUCKLAND' on the page.

Also ng2.auckland.ac.nz is visible in gcc GUI and even it's possible to submit jobs
for MrBayes calculation but they don't run good yet. I'm working on this.

MrBayes Installation

To provide a service in Computation Grid I decided to install MrBayes.

The home of MrBayes is http://www.mrbayes.net/

The latest version is 3.1.2. In Linux environment this package should be compiled. First attempt to compile was unsuccessful with errors:

bayes.c:45:31: readline/readline.h: No such file or directory

bayes.c:46:30: readline/history.h: No such file or directory

MrBayes manual says:

Depending on which platform/distribution the compilation is being performed on, it may be necessary to install relevent development libraries to enable compilation. Users of Ubuntu 5.10 (Breezy Badger), for instance, may need to install the either the libreadline4-dev or libreadline5-dev package to provide linking during compilation to GNU readline functionality.

The first try to install libreadline5-dev requires to issue 'apt-get install -f' without any package to update system. After this command I could to install libreadline5-dev by:

'apt-get install -f libreadline5-dev'

Then compilation of MrBayes performed well. Now I think I need to install lam-mpi package to make MrBayes mpi compatible. Currently no mpi packages are install on my head node.

Yahoo! Test2 is running!

Final thing was a connecting between ng2:pbs-logmaker and bestgrid-02:pbs-telltail.
Because of bestgrid-02 is Debian box I had to modify startup file quite heavily. Modified lines are bolded:

#!/bin/sh
# pbs-telltail Starts/stops pbs-telltail daemon.
# Graham Jenkins Nov. 2005. Modified: 20051220
#
# chkconfig: 2345 99 05
# description: pbs-telltail startup script

# Adjust as appropriate
REMOTES="ng2.auckland.ac.nz:2812"
[ -z "$PBS_HOME" ] && PBS_HOME=/opt/torque
[ -z "$TELLTAIL_HOME" ] && TELLTAIL_HOME=/usr/local/pbs-telltail

#. /etc/rc.d/init.d/functions
RETVAL=0
case "$1" in
start ) for Remote in $REMOTES ; do
Host=`echo $Remote | awk -F: '{print $1}'`
Port=`echo $Remote | awk -F: '{print $2}'`
echo -n "Starting pbs-telltail on host: $Host .. port: $Port .. "
$TELLTAIL_HOME/pbs-telltail $PBS_HOME/server_logs $Host $Port
RETVAL=$?; echo; [ $RETVAL -ne 0 ] && break
done
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/pbs-telltail ;;
stop ) echo -n "Shutting down pbs-telltail .. "
killproc pbs-telltail
RETVAL=$?; echo
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/pbs-telltail ;;
status) status pbs-telltail
RETVAL=$? ;;
* ) echo "Usage: $0 {start|stop|status}"; exit 1 ;;
esac
exit $RETVAL

stop and status options don't work. I will investigate this later.

I copied /usr/local/pbs-telltail/* from ng2 to bestgrid-02.
Copied pbs-telltail.RH to /etc/init.d/pbs-telltail
And modified as mentioned above. Than started this script.

Before a pbs job had stuck and displayed a message "Job Unsubmitted". After it goes further and display env variables as that specified in test2.rsl file (job description).

Submit PBS job from ng2

In my configuration there are 3 boxes: ng2, bestgrid-02 (pbs-server), bestgrid-01 (node). Submitting of PBS jobs requires following issues:

1. All three boxes have to have common folder for user which has been used as a grid user. In my case it's grid-user. I've exported /home/grid-user from bestgrid-02 and mounted it to ng2 and bestgrid-01 into the same folder;
   
2. Ideally that should be whole /home folder exported from another box (i.e. data.bestgrid.org) and mounted on all boxes in a chain ng2->pbs-server->nodes;
3. grid-user has to have passwordless access between all boxes in the chain;
4. In /home/grid-user/.ssh/known_hosts records for all boxes should be existed for short and long names;
5. All boxes should be in /etc/hosts of each box.
   

One way password less SSH

For user who has to have password less SSH between two hosts, all files in .ssh folder of both hosts must have the same permission attributes:

-rw-r--r-- 1 grid-user grid-user 867 Jul 6 13:51 authorized_keys
-rw------- 1 grid-user grid-user 668 Jun 27 15:27 id_dsa
-rw-r--r-- 1 grid-user grid-user 618 Jun 27 15:27 id_dsa.pub
-rw------- 1 grid-user grid-user 883 Jun 27 15:27 id_rsa
-rw-r--r-- 1 grid-user grid-user 238 Jun 27 15:27 id_rsa.pub
-rw------- 1 grid-user grid-user 554 Jun 27 15:27 identity
-rw-r--r-- 1 grid-user grid-user 358 Jun 27 15:27 identity.pub
-rw-r--r-- 1 grid-user grid-user 918 Jun 27 15:02 known_hosts

In my case I could ssh from ng2 to bestgrid-02 but not back. After Anton's suggestion I found out that on ng2 file authorized_keys had -rw-rw-r-- permissions. After changing to -rw-r--r-- I could ssh from bestgrid to ng2 without password.

qstat: cannot connect to server ... (errno=111)

I could pass this error only when commented lines

pbs 15000/tcp
pbs_dis 15001/tcp
pbs_dis 15001/udp
pbs_mom 15002/tcp
pbs_mom 15003/udp
pbs_mom 15003/tcp
pbs_sched 15004/tcp

in ng2:auckland.ac.nz:/etc/services file.
I placed those line reading Vladimir's recommendations.

UPD: after some tests I've found out that it's enough to edit first line in this group. It should be pbs_server 15000/tcp and then pbs utilities can connect to pbs_server. Even if on the box where pbs_server is running this line should like that, otherwise pbs utilities don't see the pbs_server.

unknown nfs status return value: -1

This error message might appear while mounting NFS share exported from AIX box.
That means an importer doesn't have a record in DNS database.

To solve just add an entry about the importer into /etc/hosts file.

Source...

Virtual File System Manager

Some things to remember while using Virtual File System Manager:

1. It looks like in Windows environment VFSM requires domain name of remote host should be A record rather than CNAME; If domain name of a host is CNAME, VFSM can't connect to it with an error like this:
2. In Linux environment VFSM can mount remote file system of a host with both kind of domain names (A record or CNAME);
3. VFSM can copy files between remote file system and local file system and back and can't copy files between two remote file systems. If user copies files between two remote hosts then files aren't appeared on destination hosts but deleted from source host.
   
4. To copy user needs to use shortcuts Ctrl+C and Ctrl+V instead of mouse drag-n-drop.
5. If there was an attempt to get access to any folder but /tmp as Anonymous user then VFSM didn't give access even to /tmp folder. The best way I know is to restart VFSM.
6. May be there are some more troubles but I didn't investigate them yet.
   

CRL has expired

That means Certificate Revocation List has been expired. This error may appear when create proxy with -verify option:

grid-proxy-init -verify -debug

It's a file in /etc/grid-sequrity/certificates/1e12d831.r0 (for APACGrid CA) Next Update is overdated. Current (for the date of this posting) CRL has inside:

Version 1 (0x0)
Signature Algorithm: md5WithRSAEncryption
Issuer: /C=AU/O=APACGrid/OU=CA/CN=APACGrid/emailAddress=camanager@vpac.org
Last Update: Jun 18 23:50:25 2007 GMT
Next Update: Jul 18 23:50:25 2007 GMT

It hasn't been updated on my bestgrid-02 machine automatically because on unknown reason a line to call fetch-crl.cron script disappeared from crontab file.

To update APACGrid CA CRL use link http://ca.apac.edu.au/pub/crl/cacrl.txt
and place this file as /etc/grid-sequrity/certificates/1e12d831.r0. Also to automatic updates it's a good idea to create cron task for daily or even hourly updates of CRL:

#!/bin/bash

# /opt/vdt/fetch-crl/share/doc/fetch-crl-2.6.2/fetch-crl.cron
# in crontab:
# 12 2 * * * /opt/vdt/fetch-crl/share/doc/fetch-crl-2.6.2/fetch-crl.cron
# Designed to be ran once a day.

if [ -f /etc/sysconfig/fetch-crl ] ; then
. /etc/sysconfig/fetch-crl
fi

CRLDIR=${CRLDIR:-/opt/vdt/globus/TRUSTED_CA/}

QUIET=${QUIET:-yes}

if [ $QUIET = "yes" ] ; then
/opt/vdt/fetch-crl/sbin/fetch-crl --loc $CRLDIR -out $CRLDIR -a 24 --quiet
else
/opt/vdt/fetch-crl/sbin/fetch-crl --loc $CRLDIR -out $CRLDIR
fi

Submitting Job to Run in Canterbury

To submit job on ng2.canterbury.ac.nz I needed to run ggc (https://www.seegrid.csiro.au/twiki/bin/view/Compsrvices/GenericGridGUI) and fill fields like that.









It's possible to see a new folder with output files using Virtual File System Manager (http://www.vpac.org/twiki/bin/view/Sandbox/UsingVFSManager).

More detailed description is in http://www.bestgrid.org/index.php/Getting_Started_with_BeSTGRIDs_Computational_GRID

Transport e-mails to Sakai

Sakai has own SMTP server - James. To receive messages in Sakai mailhost.auckland.ac.nz should forward messages to sakai.bestgrid.org. Now MailHost forwards messageg to services.bestgrid.org. It's a unneeded chain ring.
In sakai.properties set parameters for e-mails and use any dns IPs.

ToDo - ask Service Desk to redirect messages for *.bestgrid.org to sakai machine.

Adding user to Samba on AIX

edit file
/opt/pware/samba/3.0.24/lib/smb.conf

for each user add something like that
# A private directory, usable only by fred. Note that fred requires write
# access to the directory.
;[fredsdir]
; comment = Fred's Service
; path = /usr/somewhere/private
; valid users = fred
; public = no
; writable = yes
; printable = no

Create user account and set password:
/opt/pware/samba/3.0.24/bin/smbpasswd -a userupi

Job submission (globusrun-ws)

- copy usercert.pem into ~/.globus folder
- copy userkey.pem into ~/.globus folder and change permissions to 600
- run grid-proxy-init -debug
- run globusrun-ws -Ft PBS -submit -S -c /bin/date

ng2 machine should be in acl_hosts list of PBS server (qmgr -c 'l s') and in /etc/hosts.equiv file

Xen error: Link veth4 is missing

On default Xen has four veths to communicate between bridges and real eths. If one uses a command:

/etc/xen/scripts/network-bridge start netdev=eth4 bridge=xenbr4 vifnum=4

to create bridge xenbr4 and connect it to eth4 then he receives a message with
Link veth4 is missing at the beginning. To fix that situation gateway.auckland.ac.nz:/boot/grup/grub.conf should be changed like this:

kernel /boot/xen-3.gz dom0_mem=262144
module /boot/vmlinuz-2.6.16.33-xen ro root=LABEL=/ netloop.nloopbacks=8
module /boot/initrd.img-2.6.16.33-xen

A number in netloop.nloopbacks parameter is equal to amount of real NICs. Real gateway server shoud be rebooted.

Automate VM creation

To automate creation of VMs I developed a script based on VPAC recomendations:

#!/bin/sh

#Create a VM:
# allocate logical volumes for root and swap filesystems
# make swap and root filesystems
# untar VM image
# call editor to edit network configuration files
# copy and edit xen template
# create VM
#
#Parameters:
# $1 - Size for root filesystem
# $2 - Name of VM
#
#Author: Andrey Kharuk, 01/06/2007
#

if [ -z "$1" ]; then
echo " " >&2
echo "Usage: `basename $0` disksize(in Mb) VMname" >&2; exit 2
echo " " >&2
echo " " >&2
fi

lvcreate -L $1M -n $2R VolumeGroup00 ;
lvcreate -L 512M -n $2S VolumeGroup00 ;
mkswap /dev/VolumeGroup00/$2S ;
mkfs -t ext3 /dev/VolumeGroup00/$2R ;
mkdir /srv/$2 ;
mount -t ext3 /dev/VolumeGroup00/$2R /srv/$2 ;
cd /srv/$2 ;
tar xjpf /etc/xen/vm-image-0.0.1.tar.bz2 ;
nano /srv/$2/etc/sysconfig/network ;
nano /srv/$2/etc/sysconfig/network-scripts/ifcfg-eth0 ;
cp /etc/xen/template /etc/xen/$2 ;
nano /etc/xen/$2 ;
cd ..
umount /srv/$2 ;

xm create -c $2

Tar-ball 'vm-image-0.0.1.tar.bz2' is an image of fresh installed CentOS 4.0 on VM.
Both files reside in gateway.bestgrid.org:/etc/xen

globus-ws is on now (ng2.auckland.ac.nz)

To install hostcert I used a procedure from:
http://www.vpac.org/twiki/bin/view/APACgrid/HostCertRequestAPAC

globus-ws requires /etc/grid-cequirity/containercert.pem
I've created copies:
cp /etc/grid-cequirity/hostcert.pem /etc/grid-cequirity/containercert.pem
cp /etc/grid-cequirity/hostcert_request.pem /etc/grid-cequirity/containercert_request.pem
cp /etc/grid-cequirity/hostkey.pem /etc/grid-cequirity/containerkey.pem

Owner of those files is daemon:

-rw-r--r-- 1 daemon daemon 2630 May 21 00:02 containercert.pem
-rw-r--r-- 1 daemon daemon 1770 May 21 00:03 containercert_request.pem
-r-------- 1 daemon daemon 1679 May 21 00:03 containerkey.pem

To check the certificate use a command:

openssl verify -CApath /etc/grid-security/certificates /etc/grid-security/containercert.pem

services.bestgrid.org

Established services on this host are:

1. rsync
2. mail server (under construction)
   

Planned services are:

1. Subversion server
   

tar: Removing leading '/' from member names

To eliminate this message while creating an archive file with tar use the following syntax:

> tar cj -C / var/www > backup.tar.bz2

instead of

> tar cjf backup.tar.bz2 /var/www

BeSTGrid IP pool

IP Addresses Pool for BeSTGrid computer farm

Current Disk Space Allocation on GateWay

XENHOST

Filesystem Size Used Avail Use% Mounted on
/dev/sda1 9.7G 965M 8.2G 11% /
/dev/sda3 56G 4.3G 49G 8% /home


VMHOST

VG #PV #LV #SN Attr VSize VFree
VolumeGroup00 1 17 0 wz--n- 409.84G 342.86G

LV VG Attr LSize
GridSphereR VolumeGroup00 -wi-ao 2.00G
GridSphereS VolumeGroup00 -wi-ao 512.00M
LanguageR VolumeGroup00 -wi-ao 2.00G
LanguageS VolumeGroup00 -wi-ao 512.00M
NG2Root VolumeGroup00 -wi-ao 16.00G
NG2Swap VolumeGroup00 -wi-ao 512.00M
SRSData VolumeGroup00 -wi-ao 20.00G
SRSRoot VolumeGroup00 -wi-ao 1.50G
SRSSwap VolumeGroup00 -wi-ao 512.00M
SakaiR VolumeGroup00 -wi-ao 8.00G
SakaiS VolumeGroup00 -wi-ao 512.00M
SakaitR VolumeGroup00 -wi-a- 8.00G
SakaitS VolumeGroup00 -wi-a- 512.00M
ServicesR VolumeGroup00 -wi-ao 4.00G
ServicesS VolumeGroup00 -wi-ao 512.00M
SolverR VolumeGroup00 -wi-ao 1.49G
SolverS VolumeGroup00 -wi-ao 512.00M

Xen's VMs and IPs

In case to provide separate physical network interfaces for each BestGrid VM we need two IPs for each VM. One IP is for a bridge between NIC and VM and another one is for VM itself.

So to provide low IPs (189.2,3,4,5,6) for BeSTGrid GateWay VMs I need to swap NIC IPs to 189.38-42 range.

Unfortunately I have to state that our IP pool is over now. There are only two spare IPs - 189.37 and 189.43.

I'm going to start swap today after lunch.

Is it better than paper and simple notebook?

I try to follow my colleague Anton Gerdelan to keep a blog about my problems and achievements instead of to write then into a paper notebook. May be it's better... The bad thing is I can't keep here passwords for my stuff :)

But it's possible to keep it private... Hm... Anyway that's unsecured way to keep passwords here even in a private blog.