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Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1)
From: |
Dietmar Maurer |
Subject: |
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1) |
Date: |
Thu, 22 Nov 2012 17:46:19 +0000 |
> > Did you look at the VMDK "Stream-Optimized Compressed" subformat?
>
> We've gone down several sub-threads discussing whether VMDK is suitable.
> I want to summarize why this is a good approach:
>
> The VMDK format already allows for out-of-order data and is supported by
> existing tools - this is very important for backups where people are
> (rightfully) paranoid about putting their backups in an obscure format. They
> want to be able to access their data years later, whether your tool is still
> around or not.
The VMDK format has strong disadvantages:
- unclear License (the spec links to patents)
- they use a very slow compression algorithm (deflate), which makes it unusable
for backup
- Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), (continued)
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Dietmar Maurer, 2012/11/22
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Dietmar Maurer, 2012/11/22
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Dietmar Maurer, 2012/11/22
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Stefan Hajnoczi, 2012/11/22
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Dietmar Maurer, 2012/11/23
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Dietmar Maurer, 2012/11/22
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Stefan Hajnoczi, 2012/11/23
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Dietmar Maurer, 2012/11/22
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Stefan Hajnoczi, 2012/11/23
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Dietmar Maurer, 2012/11/23
Re: [Qemu-devel] [PATCH 1/5] RFC: Efficient VM backup for qemu (v1), Dietmar Maurer, 2012/11/22