Re: [PATCH] qemu: domain: Log some useful data in qemuDomainStorageSourceAccessModify

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Peter Krempa <pkrempa@xxxxxxxxxx> [2019-06-12, 01:53PM +0200]:
> Log the flags passed to the function in a exploded state so that it's
> easily visible what's happening to the image.
> 
> Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
> ---
>  src/qemu/qemu_domain.c | 13 ++++++++++---
>  1 file changed, 10 insertions(+), 3 deletions(-)
> 
> diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
> index 2095191cde..d28cfa4f42 100644
> --- a/src/qemu/qemu_domain.c
> +++ b/src/qemu/qemu_domain.c
> @@ -9339,6 +9339,9 @@ qemuDomainStorageSourceAccessModify(virQEMUDriverPtr driver,
>      int ret = -1;
>      virErrorPtr orig_err = NULL;
>      bool chain = flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_CHAIN;
> +    bool force_ro = flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_FORCE_READ_ONLY;
> +    bool force_rw = flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_FORCE_READ_WRITE;
> +    bool revoke = flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_REVOKE;
>      int rc;
>      bool was_readonly = src->readonly;
>      bool revoke_cgroup = false;
> @@ -9346,14 +9349,18 @@ qemuDomainStorageSourceAccessModify(virQEMUDriverPtr driver,
>      bool revoke_namespace = false;
>      bool revoke_lockspace = false;
> 
> -    if (flags & QEMU_DOMAIN_STORAGE_SOURCE_ACCESS_FORCE_READ_ONLY)
> +    VIR_DEBUG("VM: '%s', src: '%s', readonly: '%d, force_ro: '%d', force_rw: '%d', revoke: '%d', chain: '%d'",

Almost everywhere we use the syntax key=value when logging, so I'd
prefer this here as well.

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