BTRFS as image store for KVM?

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Hi everybody,

first off, I'm not 100% sure if this is the right place to ask, so if it's not, I apologize and I'd appreciate a pointer in the right direction.

I want to build a virtualization server to replace my current home server. I'm thinking about a Debian system with libvirt/KVM. The system will have one or two SSDs and five harddisks with some kind of software RAID5 for storage. I'd like to have a filesystem with data checksums, so BTRFS seems like the right way to go. However, I read that BTRFS does not perform well as storage for KVM disk images.
(See here: http://www.linux-kvm.org/page/Tuning_KVM )

Is this still true?

I would appreciate any comments and/or tips you might have on this topic.

Is anyone using BTRFS as an image store? Are there any special settings I should be aware of to make it work well?

Thanks,
Gert
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