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Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI
From: |
Orit Wasserman |
Subject: |
Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI |
Date: |
Thu, 15 Sep 2011 19:59:44 +0300 |
On Thu, 2011-09-15 at 14:58 +0200, Paolo Bonzini wrote:
> On 09/15/2011 02:34 PM, Orit Wasserman wrote:
> >> > Then you need an iSCSI*target* that understands qcow2, like qemu-nbd
> >> > but for iSCSI... that's exactly the thing you were worried about
> >> > implementing.
> >
> > Not really , this is just part of the target configuration.
> > For each file in the chain we create a lun in the target that is backed
> > by the file and we number the luns in chronological order (base is lun
> > 1) . you can look at a tgtd configuration here
> > http://wiki.qemu.org/Features/LiveBlockMigration#Example_single_base_master_image.
>
> That's surely a weird way to use iSCSI. :)
:)
> It's clever, but I would call that shared storage, since you need to
> share the details of the snapshot chain between the source and
> destination, down to the file names. We need a more precise nomenclature.
We store the parent base image inside the image (relative path). We can
reverse engineer it in the destination , start at the highest lun ,read
it's parent name , create a symbolic link to the parent (previous lun)
and so on ...
Orit
> Paolo
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, (continued)
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Dor Laor, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Paolo Bonzini, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, ronnie sahlberg, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Dor Laor, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Christoph Hellwig, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Dor Laor, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Paolo Bonzini, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Paolo Bonzini, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Orit Wasserman, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Paolo Bonzini, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI,
Orit Wasserman <=
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Daniel P. Berrange, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Kevin Wolf, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Paolo Bonzini, 2011/09/15
- Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, ronnie sahlberg, 2011/09/21
Re: [Qemu-devel] [PATCH] This patch adds a new block driver : iSCSI, Mark Wu, 2011/09/23
Re: [Qemu-devel] [PATCH] Add iSCSI support for QEMU, Kevin Wolf, 2011/09/12