[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v2 0/5]: QMP: Proper thin provisioning support
From: |
Luiz Capitulino |
Subject: |
Re: [Qemu-devel] [PATCH v2 0/5]: QMP: Proper thin provisioning support |
Date: |
Wed, 3 Aug 2011 15:36:34 -0300 |
On Wed, 3 Aug 2011 20:26:30 +0200
Christoph Hellwig <address@hidden> wrote:
> On Wed, Aug 03, 2011 at 03:11:38PM -0300, Luiz Capitulino wrote:
> > > > It's already possible for QMP clients to implement this feature by using
> > > > the BLOCK_IO_ERROR event. However, the event can be missed. When this
> > > > happens QMP clients need a way to query if any block device has hit a
> > > > no space condition.
> > >
> > > We have a mode where we stop the VM when it hits ENOSPC, and that is
> > > the only reliably way to handle it.
> >
> > This series just complements that mode by allowing a mngt application
> > to query which device triggered the ENOSPC. Well, that's my intention :)
>
> Oh, so you only plan to use the QMP command post-mortem? That makes a lot
> more sense.
Yes. Calling it 'proper thin provisioning support' was too ambitious from
my part.
> But relying on that fact should also help to simplify the
> implementation and make it more robust by storing the error code from
> the same place that we stop them VM.
Yes, I think I'll do that.
- [Qemu-devel] [PATCH 5/5] scsi-disk: Support I/O status, (continued)
[Qemu-devel] [PATCH 3/5] virtio-blk: Support I/O status, Luiz Capitulino, 2011/08/03
Re: [Qemu-devel] [PATCH v2 0/5]: QMP: Proper thin provisioning support, Christoph Hellwig, 2011/08/03