Re: [PATCH 00/21] qemu: Refactor domstats code to avoid error reporting

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On a Thursday in 2025, Peter Krempa wrote:
The workers of qemuDomainGetStats should not report errors if they can't
fetch data; but rather omit the entries. Refactor the code to
de-incentivize error reporting.

Peter Krempa (21):
 qemuDomainGetStatsBlockExportHeader: Remove return value
 qemuDomainGetStatsBlockExportFrontend: Remove return value
 qemuDomainGetStatsBlockExportBackendStorage: Remove return value
 qemuDomainGetStatsOneBlockFallback: Remove return value
 qemuDomainGetStatsOneBlock: Remove return value
 qemuDomainStorageAlias: Remove NULL checks from callers
 qemuDomainGetStatsBlockExportHeader: Remove return value
 virBitmapFormat: Clarify returned values
 virDomainResctrlMonDefParse: Refactor temporary variables
 virDomainCputuneDefFormat: Refactor bitmap formatting
 virBitmapFormat: Don't check return value
 qemuDomainGetStatsCpuCgroup: Remove return value
 qemuDomainGetStatsCpuProc: Remove return value
 qemuDomainGetStatsCpuHaltPollTime: Remove return value
 qemuDomainGetStatsCpuCache: Don't error out
 virPerfReadEvent: Refactor to return -errno on failure
 qemuDomainGetStatsPerfOneEvent: Ignore erros from 'virPerfReadEvent'
 qemuDomainGetStatsIOThread: Don't error out if fetching iothread info
   fails
 qemuDomainGetStatsMemoryBandwidth: Don't error out
 qemuDomainGetStatsDirtyRate: Don't error out
 qemuDomainGetStats: Convert worker functions to void

src/ch/ch_driver.c             |   3 +-
src/conf/capabilities.c        |   9 +-
src/conf/domain_conf.c         |  69 ++-----
src/conf/numa_conf.c           |  18 +-
src/conf/virnetworkobj.c       |   3 -
src/hypervisor/domain_cgroup.c |   6 +-
src/libxl/libxl_driver.c       |   3 +-
src/libxl/xen_common.c         |   6 +-
src/qemu/qemu_command.c        |   3 +-
src/qemu/qemu_domain.c         |  10 +-
src/qemu/qemu_driver.c         | 341 ++++++++++++---------------------
src/qemu/qemu_monitor_json.c   |   5 +-
src/util/virbitmap.c           |  11 +-
src/util/vircgroup.c           |   5 +-
src/util/virperf.c             |  19 +-
src/vz/vz_sdk.c                |   3 +-
16 files changed, 178 insertions(+), 336 deletions(-)


s/outputing/outputting/ in the commit messages

Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx>

Jano

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