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Re: [Qemu-discuss] qemu-img convert stuck
From: |
Fam Zheng |
Subject: |
Re: [Qemu-discuss] qemu-img convert stuck |
Date: |
Thu, 12 Apr 2018 22:23:43 +0800 |
User-agent: |
Mutt/1.9.2 (2017-12-15) |
On Thu, 04/12 21:45, David Lee wrote:
> On Thu, Apr 12, 2018 at 10:16 AM, David Lee <address@hidden> wrote:
> >> > My team caught this issue too after switching to CentOS 7.4 with qemu-img
> >> > 2.9.0
> >> > gdb shows exactly the same backtrace when the convert stuck, and we are
> >> > on
> >> > NFS.
> >> >
> >> > Later we found the following:
> >> > 1. The stuck can happen on local storage, too.
> >> > 2. Replace qemu-img 2.9.0 with 2.6.0 and everything works smoothly again.
> >> >
> >> > BTW, we use "qemu-img convert" to convert qcow2 and its backing files
> >> > into
> >> > a single qcow2 image.
> >>
> >> Maybe it is RHBZ 1508886?
> >>
> >> Fam
> >
> >
> >
> > Thanks, Fam. We just tracked down to this BZ too and are about to trying
> > the commit ef6dada8b44e1e7c4bec5c1115903af9af415b50
>
> We tested qemu-kvm-ev-2.9.0-16.el7_4.14.1 - where from the source RPM we
> verified it does contain ef6dada8b44e1e7c4bec5c1115903af9af415b50
>
> But the issue still exists. The convert got stuck if one of the old
> active overlay
> had been 'vol-resize'd with qemu monitor command to a larger size. This
> looks
> like a prerequisite but not sufficient condition to trigger this badness.
So it is a separate issue. Did you try upstream master as well?
Fam
- Re: [Qemu-discuss] qemu-img convert stuck, (continued)
- Re: [Qemu-discuss] qemu-img convert stuck, Nir Soffer, 2018/04/08
- Re: [Qemu-discuss] qemu-img convert stuck, David Lee, 2018/04/11
- Re: [Qemu-discuss] qemu-img convert stuck, Fam Zheng, 2018/04/11
- Re: [Qemu-discuss] qemu-img convert stuck, David Lee, 2018/04/11
- Re: [Qemu-discuss] qemu-img convert stuck, David Lee, 2018/04/12
- Re: [Qemu-discuss] qemu-img convert stuck,
Fam Zheng <=
- Re: [Qemu-discuss] qemu-img convert stuck, David Lee, 2018/04/12
- Re: [Qemu-discuss] qemu-img convert stuck, David Lee, 2018/04/18
- Re: [Qemu-discuss] qemu-img convert stuck, Fam Zheng, 2018/04/18
- Re: [Qemu-discuss] qemu-img convert stuck, Fam Zheng, 2018/04/18
- Re: [Qemu-discuss] qemu-img convert stuck, David Lee, 2018/04/18