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b=UpAkx2+YAPBW/c71lcoZRHAQjr6cWOP35PinpjNaN/2Nvvr5XTI063E5pY2W42b7dhcn09 zAjNWWbRV1uDzWZmQ4zjLPfLT/ToY+1CgKrRcPk9AC9IUHRK3hWljsV+sWocjN+RrYGAJG 2sxG5lF0+ydgrIawm8VMuWblwOSg5QQ= X-MC-Unique: p7lAZNDePQqfPrKKtA7awg-1 From: Stefano Garzarella To: qemu-devel@nongnu.org Subject: [PATCH v2] blockjob: report a better error message Date: Thu, 25 Feb 2021 11:36:33 +0100 Message-Id: <20210225103633.76746-1-sgarzare@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=sgarzare@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=63.128.21.124; envelope-from=sgarzare@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , Vladimir Sementsov-Ogievskiy , John Snow , qemu-block@nongnu.org, Max Reitz Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" When a block job fails, we report strerror(-job->job.ret) error message, also if the job set an error object. Let's report a better error message using error_get_pretty(job->job.err). If an error object was not set, strerror(-job->ret) is used as fallback, as explained in include/qemu/job.h: typedef struct Job { ... /** * Error object for a failed job. * If job->ret is nonzero and an error object was not set, it will be s= et * to strerror(-job->ret) during job_completed. */ Error *err; } In block_job_query() there can be a transient where 'job.err' is not set by a scheduled bottom half. In that case we use strerror(-job->ret) as it was before. Suggested-by: Kevin Wolf Signed-off-by: Stefano Garzarella --- Notes: v2: - fixed potential issue in block_job_query() [Kevin] - updated commit message blockjob.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/blockjob.c b/blockjob.c index f2feff051d..ef968017a2 100644 --- a/blockjob.c +++ b/blockjob.c @@ -318,8 +318,12 @@ BlockJobInfo *block_job_query(BlockJob *job, Error **e= rrp) info->status =3D job->job.status; info->auto_finalize =3D job->job.auto_finalize; info->auto_dismiss =3D job->job.auto_dismiss; - info->has_error =3D job->job.ret !=3D 0; - info->error =3D job->job.ret ? g_strdup(strerror(-job->job.ret)) := NULL; + if (job->job.ret) { + info->has_error =3D true; + info->error =3D job->job.err ? + g_strdup(error_get_pretty(job->job.err)) : + g_strdup(strerror(-job->job.ret)); + } return info; } =20 @@ -356,7 +360,7 @@ static void block_job_event_completed(Notifier *n, void= *opaque) } =20 if (job->job.ret < 0) { - msg =3D strerror(-job->job.ret); + msg =3D error_get_pretty(job->job.err); } =20 qapi_event_send_block_job_completed(job_type(&job->job), --=20 2.29.2