I've found a very nice tool pv ...

$ dd if=/dev/sda1 | pv | dd of=backup.img
359MB 0:00:05 [75.3MB/s] [    <=>                       ]

Because libvirt self is using the qemu monitor to mange the guests, it is not available for the user. Since version 0.8.6 [1] its possbile to send a command throught libvirt to the monitor.

virsh qemu-monitor-command  

The problem is that you must use the QMP format to send …

force reboot

$ echo 1 > /proc/sys/kernel/sysrq
$ echo b > /proc/sysrq-trigger

force shutdown

$ echo 1 > /proc/sys/kernel/sysrq
$ echo o > /proc/sysrq-trigger

If you're trying to boot the Archlinux 2010.05 CD/DVD/Netinstall and getting the message

ERROR: boot device didn't show up after 30 seconds ...

try this one to fix the problem

$ udevadm trigger
$ exit

If you getting errors like this one

$ /path/to/program
/usr/lib/libcrypto.so.0.9.8: no version information available

you need a libcrypto.so and a libssl.so with version information.

Here are some information about the problem.

openssl has evolved to a very important library in Linux …

$SERVER/deploy/messaging/messaging-service.xml

${jboss.messaging.ServerPeerID:0}

For clustered environment each jboss node need a unique ServerPeerID which must be a valid integer.

Here are some random notes for the migration from ubuntu to linux mint 10 (julia) !

/etc/apt/sources.list

deb http://packages.linuxmint.com/ julia main upstream import
deb http://archive.ubuntu.com/ubuntu/ maverick main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ maverick-updates main restricted universe multiverse …

to save for later...

mhvtl - A Linux Virtual Tape Library

That could be a really nice backup solution.

AWS Free Usage Tier (Per Month):

• 750 hours of Amazon EC2 Linux Micro Instance usage (613 MB of memory and 32-bit and 64-bit platform support) – enough hours to run continuously each month*
• 750 hours of an Elastic Load Balancer plus 15 GB data processing*
• 10 GB of Amazon Elastic Block …

Released check_ajp v1 - see download

md5sum: bfd5c249a1f44123062a0485c3af524c

Usage: ./check_ajp --app 10.10.10.10

$ ./check_ajp --app 10.28.10.80; echo "return: $?"
OK - AJP - 0.00294 seconds response time|time=0.002943s;;;0.000000;10.000000
return: 0