[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 2/3] block-nbd: fix use of protocols in backing
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH 2/3] block-nbd: fix use of protocols in backing files and nbd probing |
Date: |
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.
Stefan
[Qemu-devel] [PATCH 3/3] disk: don't read from disk until the guest starts, Anthony Liguori, 2010/09/11