Re: [PULL 00/17] Block patches

[Stefan Hajnoczi <stefanha@redhat.com>]

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On Sat, Apr 29, 2023 at 11:05:06PM +0100, Richard Henderson wrote:
> On 4/28/23 13:39, Stefan Hajnoczi wrote:
> > The following changes since commit 05d50ba2d4668d43a835c5a502efdec9b92646e6:
> > 
> >    Merge tag 'migration-20230427-pull-request' of https://gitlab.com/juan.quintela/qemu into staging (2023-04-28 08:35:06 +0100)
> > 
> > are available in the Git repository at:
> > 
> >    https://gitlab.com/stefanha/qemu.git tags/block-pull-request
> > 
> > for you to fetch changes up to d3c760be786571d83d5cea01953e543df4d76f51:
> > 
> >    docs/zoned-storage:add zoned emulation use case (2023-04-28 08:34:07 -0400)
> > 
> > ----------------------------------------------------------------
> > Pull request
> > 
> > This pull request contains Sam Li's virtio-blk zoned storage work. These
> > patches were dropped from my previous block pull request due to CI failures.
> 
> 
> More CI build failures, e.g.

Hi Sam,
There are some more CI failures.

> 
> https://gitlab.com/qemu-project/qemu/-/jobs/4202086013#L1720

This Ubuntu 20.04 on s390x CI job failed because <linux/blkzoned.h> is
missing Linux commit e876df1fe0ad ("block: add zone open, close and
finish ioctl support"):

  ../block/file-posix.c: In function ‘raw_co_zone_mgmt’:
  ../block/file-posix.c:3472:14: error: ‘BLKOPENZONE’ undeclared (first use in this function)
   3472 |         zo = BLKOPENZONE;
        |              ^~~~~~~~~~~
  ../block/file-posix.c:3472:14: note: each undeclared identifier is reported only once for each function it appears in
  ../block/file-posix.c:3476:14: error: ‘BLKCLOSEZONE’ undeclared (first use in this function); did you mean ‘BLKRESETZONE’?
   3476 |         zo = BLKCLOSEZONE;
        |              ^~~~~~~~~~~~
        |              BLKRESETZONE
  ../block/file-posix.c:3480:14: error: ‘BLKFINISHZONE’ undeclared (first use in this function)
   3480 |         zo = BLKFINISHZONE;
        |              ^~~~~~~~~~~~~

Older kernels didn't have these ioctls. I don't think it makes sense to
enable file-posix zoned functionality without these ioctls.

I suggest changing the CONFIG_BLKZONED check in meson.build from:

  config_host_data.set('CONFIG_BLKZONED', cc.has_header('linux/blkzoned.h'))

 to:

  config_host_data.set('CONFIG_BLKZONED', cc.has_header_symbol('linux/blkzoned.h', 'BLKOPENZONE'))

> https://gitlab.com/qemu-project/qemu/-/jobs/4202085995#L4088

The <linux/asm/kvm.h> header file started using __DECLARE_FLEX_ARRAY()
and QEMU doesn't have that macro:

  linux-headers/asm/kvm.h:509:3: error: expected specifier-qualifier-list before '__DECLARE_FLEX_ARRAY'
    509 |   __DECLARE_FLEX_ARRAY(struct kvm_vmx_nested_state_data, vmx);
        |   ^~~~~~~~~~~~~~~~~~~~

You could update the sed command in scripts/update-linux-headers.sh to
convert __DECLARE_FLEX_ARRAY(type, field) into type field[] or import
the Linux macro definition of __DECLARE_FLEX_ARRAY().

Another failure is
https://gitlab.com/qemu-project/qemu/-/jobs/4202085991 where
qemu-iotests is failing because the output has changed due to the
addition of zoned fields to block stats.

Another failure is
https://gitlab.com/qemu-project/qemu/-/jobs/4202086041 where
qemu-system-ppc seems to segfault.

You can find the CI results here: https://gitlab.com/qemu-project/qemu/-/pipelines/852908752

You can run the GitLab CI yourself like this:

  $ git push -o ci.variable=QEMU_CI=2 your_gitlab_repo HEAD

Stefan

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