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Karolis T.
Asked: 2009-06-23 04:44:54 +0800 CST

Mirroring live system - what are the options

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What are my options to mirror a running system (without taking it down) to have an as close as possible copy for use as a XEN guest?

Now I'm planning to install the same version of OS as domU and simply rsync everything down to it from the live system. Not sure about /boot | kernel stuff though, any problems syncing these?

Also, can I set a remote "nice" level for rsync, cap bandwidth - to avoid putting stress on the live server?

xen debian rsync mirror

2 Answers

  1. rsync has a --bwlimit option to limit bandwidth.

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  2. Best Answer

    "DRBD® refers to block devices designed as a building block to form high availability (HA) clusters. This is done by mirroring a whole block device via an assigned network. DRBD can be understood as network based raid-1."

    I use drbd in my XEN Cluster.

    HINT2: LVM2 is perfect addition

    P.S. Please excuse my bad english...

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