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Am 13.06.2013 14:31, schrieb Nick Khamis: |
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> Hello Norman, |
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> |
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> Thank you so much for your response, and that is an interesting setup. |
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> |
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>>> we open up pools of up to 20 hosts which all mount the same NFS |
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>>> share which holds sparse file images as virtual hdds of the |
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>>> VM. |
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> |
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> How are these sprase file images initially built for each VM's virtual hdd? And |
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> can this process be automated. |
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There are many ways, in our case virt-install creates them automaticaly. |
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But you could just dd a file from /dev/zero or random. It is a raw |
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sparse file. There is no internal logic behind it. |
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Of cause this process can be fully automated. |
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We automated the complete installation process, which takes one command |
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now to install and deploy a completely from scratch installed VM in |
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about 8 to 11 Minutes. |
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> |
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>>> So life migration is possible, other than holding the VMs on local |
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>>> storage. |
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> |
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> I can understand that. |
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> |
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>>> Our never clusters are equipped with hosts using 10 gigabit ethernet. |
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>>> Two 10GE ports are bonded to provide redundancy and balancing. Every |
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>>> host features 2 bonds, one for storage vlans and one for the production |
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>>> vlans. Performance is not the issue. |
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> |
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> Good network engineering. |
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> |
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> I guess also with this setup replication would be handled by rsync? If so, the |
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> potential of this setup really starts to shine. |
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What do you mean by replication? |
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> |
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> WOW, from NAS to SAN? |
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> |
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> Kind Regards, |
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> |
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> Nick. |
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> |