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Re: [Qemu-devel] [PATCH 2/3] block-nbd: fix use of protocols in backing
Re: [Qemu-devel] [PATCH 2/3] block-nbd: fix use of protocols in backing files and nbd probing
Sat, 11 Sep 2010 17:53:16 +0100
On Sat, Sep 11, 2010 at 3:04 PM, Anthony Liguori <address@hidden> wrote:
> Additionally, there's a spurious read when using an nbd protocol that can be
> quite destructive when using copy-on-read. Potentially, this can lead to
> probing an image file over top of NBD but this is completely wrong as NBD
> devices are not growable.
Can you describe the copy-on-read scenario where the 2 KB probe read
is a problem?
Accessing a fixed size image file over NBD is probably uncommon, but
I'm not sure if there's a reason to forbid it.
[Qemu-devel] [PATCH 3/3] disk: don't read from disk until the guest starts, Anthony Liguori, 2010/09/11