02-23-2011
HydraVM: Low-Cost, Transparent High Availability for Virtual Machines
HPL-2011-24
HydraVM: Low-Cost, Transparent High Availability for Virtual Machines - Hou, Kai-Yuan; Uysal, Mustafa; Merchant, Arif; Shin, Kang G.; Singhal, Sharad
Keyword(s): Virtualization, High Availability, VM Checkpointing, VM Restore, Shared Storage
Abstract: Existing approaches to providing high availability (HA) for virtualized environments require a backup VM for every primary running VM. These approaches are expensive in memory because the backup VM requires the same amount of memory as the primary, even though it is normally passive. In this paper, ...
Full Report
More...
8 More Discussions You Might Find Interesting
1. News, Links, Events and Announcements
See article on Sun and Linux:
http://news.yahoo.com/news?tmpl=story2&cid=569&ncid=738&e=1&u=/nm/20020919/tc_nm/tech_sunmicro_dc (1 Reply)
Discussion started by: Neo
1 Replies
2. UNIX for Advanced & Expert Users
Hi folks,
(Sorry I don't know what its technology is termed exactly. High Availability OR load balancing)
What I'm going to explore is as follows:-
For example, on Physical Servers;
Server-1 - LAMP, a working server
Server-2 - LAMP, for redundancy
While Server-1 is working all... (3 Replies)
Discussion started by: satimis
3 Replies
3. AIX
Hello All
I have a system running AIX 61 shared uncapped partition (with 11 physical processors, 24 Virtual 72GB of Memory) .
The output from NMON, vmstat show a high run queue (60+) for continous periods of time intervals, but NO paging, relatively low I/o (6000) , CPU % is 40, Low network.... (9 Replies)
Discussion started by: IL-Malti
9 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I want to set up a iscsi high availability with sheepdog distributed storage.
Here is my system set up. Four nodes with sheepdog distributed storage and i am sharing this storage through iscsi using two nodes as well as using a virtual ip set up using ucarp.Two nodes using same iqn. And... (0 Replies)
Discussion started by: jobycxa
0 Replies
5. AIX
Hi,
Can someone help and give the answer for the following questions:
1. When PowerHA SystemMirror 7.1 is installed on AIX 7.1, what RSCT component does Cluster Aware AIX (CAA) replace?
A. Group Services
B. Resource Manager
C. Topology Services
D. Resource Monitoring and Control... (2 Replies)
Discussion started by: walterchang100
2 Replies
6. Solaris
hi guys
I posted problem last time I didn't find answer to my issue.
my problem is as below:
I have two servers which work as an actif/standby in high availability system.
but when i use command HASTAT -a i have the following message: couldn' find actif node.
the servers are sun... (1 Reply)
Discussion started by: zineb06
1 Replies
7. Red Hat
Hi,
I want to create gfs storage. But getting error as below:
--> Finished Dependency Resolution
Error: Package: pacemaker-1.1.12-22.el7_1.2.x86_64 (rhel-ha-for-rhel-7-server-eus-rpms)
Requires: sbd
You could try using --skip-broken to work around the problem
You could try... (1 Reply)
Discussion started by: mzainal
1 Replies
8. UNIX for Beginners Questions & Answers
Hi All,
Is there any way I can prioritize my VMs when there is resource crunch in host machine so that some VMs will be allocated more vcpu, more memory than other VMs in kvm/qemu hypervisor based virtual machines?
Lets say in my cloud environment my Ubuntu 16 compute hosts are running some... (0 Replies)
Discussion started by: SanjayK
0 Replies
LEARN ABOUT DEBIAN
app::nopaste
App::Nopaste(3pm) User Contributed Perl Documentation App::Nopaste(3pm)
NAME
App::Nopaste - easy access to any pastebin
SYNOPSIS
use App::Nopaste 'nopaste';
my $url = nopaste(q{
perl -wle 'print "Prime" if (1 x shift) !~ /^1?$|^(11+?)1+$/' [number]
});
# or on the command line:
nopaste test.pl
=> http://pastebin.com/fcba51f
DESCRIPTION
Pastebins (also known as nopaste sites) let you post text, usually code, for public viewing. They're used a lot in IRC channels to show
code that would normally be too long to give directly in the channel (hence the name nopaste).
Each pastebin is slightly different. When one pastebin goes down (I'm looking at you, <http://paste.husk.org>), then you have to find a new
one. And if you usually use a script to publish text, then it's too much hassle.
This module aims to smooth out the differences between pastebins, and provides redundancy: if one site doesn't work, it just tries a
different one.
It's also modular: you only need to put on CPAN a App::Nopaste::Service::Foo module and anyone can begin using it.
INTERFACE
CLI
See the documentation in App::Nopaste::Command.
"nopaste"
use App::Nopaste 'nopaste';
my $url = nopaste(
text => "Full text to paste (the only mandatory argument)",
desc => "A short description of the paste",
nick => "Your nickname",
lang => "perl",
chan => "#moose",
private => 1, # default: 0
# this is the default, but maybe you want to do something different
error_handler => sub {
my ($error, $service) = @_;
warn "$service: $error";
},
warn_handler => sub {
my ($warning, $service) = @_;
warn "$service: $warning";
},
# you may specify the services to use - but you don't have to
services => ["Shadowcat", "Gist"],
);
print $url if $url;
The "nopaste" function will return the URL of the paste on success, or "undef" on failure.
For each failure, the "error_handler" argument is invoked with the error message and the service that issued it.
For each warning, the "warn_handler" argument is invoked with the warning message and the service that issued it.
SEE ALSO
WebService::NoPaste, WWW::Pastebin::PastebinCom::Create, Devel::REPL::Plugin::Nopaste
http://perladvent.org/2011/2011-12-14.html <http://perladvent.org/2011/2011-12-14.html>
AUTHOR
Shawn M Moore, "sartak@gmail.com"
COPYRIGHT AND LICENSE
Copyright 2008-2010 Shawn M Moore.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2011-12-15 App::Nopaste(3pm)