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Re: [Qemu-devel] [PATCH RFC 0/5] disk deadlines
From: |
Fam Zheng |
Subject: |
Re: [Qemu-devel] [PATCH RFC 0/5] disk deadlines |
Date: |
Tue, 8 Sep 2015 18:20:21 +0800 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On Tue, 09/08 12:11, Kevin Wolf wrote:
> Am 08.09.2015 um 11:20 hat Fam Zheng geschrieben:
> > [Cc'ing address@hidden
> >
> > On Tue, 09/08 11:00, Denis V. Lunev wrote:
> > > To avoid such situation this patchset introduces patch per-drive option
> > > "disk-deadlines=on|off" which is unset by default.
> >
> > The general idea sounds very nice. Thanks!
> >
> > Should we allow user configuration on the timeout? If so, the option
> > should be
> > something like "timeout-seconds=0,1,2...". Also I think we could use werror
> > and rerror to control the handling policy (whether to ignore/report/stop on
> > timeout).
>
> Yes, I think the timeout needs to be configurable. However, the only
> action that makes sense is stop. Everything else would be unsafe because
> the running request could still complete at a later point.
What if the timeout happens on a quorum child? The management can replace it
transparently without stopping the VM.
Fam
- Re: [Qemu-devel] [PATCH 4/5] disk_deadlines: add control of requests time expiration, (continued)
[Qemu-devel] [PATCH 5/5] disk_deadlines: add info disk-deadlines option, Denis V. Lunev, 2015/09/08
Re: [Qemu-devel] [PATCH RFC 0/5] disk deadlines, Vasiliy Tolstov, 2015/09/08
Re: [Qemu-devel] [PATCH RFC 0/5] disk deadlines, Fam Zheng, 2015/09/08
Re: [Qemu-devel] [PATCH RFC 0/5] disk deadlines, Paolo Bonzini, 2015/09/08
Re: [Qemu-devel] [PATCH RFC 0/5] disk deadlines, Kevin Wolf, 2015/09/08