From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CE7EAC25B74 for ; Mon, 13 May 2024 18:08:15 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s6a5N-0001OK-O8; Mon, 13 May 2024 14:07:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s6a5L-0001Nj-GN; Mon, 13 May 2024 14:07:39 -0400 Received: from smtp-out1.suse.de ([195.135.223.130]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1s6a5G-0005nK-TJ; Mon, 13 May 2024 14:07:39 -0400 Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id C46A03538D; Mon, 13 May 2024 18:07:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1715623652; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=el5iQJDT7Rhng6sDLCeYIzKGpq0Lw1t9gOCtQY5LVWE=; b=CzwMfi8GAgR0dHmiqdFnKeUpSTQiI9hS6by/tzuEPAawt+18ifJtMFjZboETnEce6gRziR ct9gVQlwRx1f7Wf7CMIjcmQdrt3a8Fq1O5VRK9ETsTy5K1eJNNkNhEDUH+O4cYt7JNjdBd 5kpFdY3aLx1mj2PywRPqCeEaihhuI3M= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1715623652; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=el5iQJDT7Rhng6sDLCeYIzKGpq0Lw1t9gOCtQY5LVWE=; b=GgyJQ/QWtzzKnxgjVQCqqPCjRa+oW+aNi1T6YBtv51FjiPxw5WwTpZCz0Cx/dtsAMbveg+ tyJynHhWIL9ApkCA== Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.de header.s=susede2_rsa header.b=WOWFZNVM; dkim=pass header.d=suse.de header.s=susede2_ed25519 header.b=t0LAU+l6 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1715623651; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=el5iQJDT7Rhng6sDLCeYIzKGpq0Lw1t9gOCtQY5LVWE=; b=WOWFZNVMBm+pCEiVklT3RQkrXCE+Xb0UtTK1RGKp/vls5GTtAIY1UhW85SY64+6gdMvKEw 8pZvUwhlJ9NzOABr7NARG5mTa12DGq9z7nxGOpVUGUStINbr9HL87KRP72WEg6TdRuexkR VCiMK0E2v1ha9H1aF9D+/6PD6wrAe/w= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1715623651; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=el5iQJDT7Rhng6sDLCeYIzKGpq0Lw1t9gOCtQY5LVWE=; b=t0LAU+l6shPLMdfi+Wj2y96kDwGx6f6D5ppqneKM0TjFSzKb2vZgi/AOVLxtf0uehMAxaz a5K6YT2dpDIkyUCA== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 504901372E; Mon, 13 May 2024 18:07:31 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id m+hVBuNWQmbCfwAAD6G6ig (envelope-from ); Mon, 13 May 2024 18:07:31 +0000 From: Fabiano Rosas To: Markus Armbruster , qemu-devel@nongnu.org Cc: philmd@linaro.org, fam@euphon.net, kwolf@redhat.com, hreitz@redhat.com, marcandre.lureau@redhat.com, peterx@redhat.com, pbonzini@redhat.com, richard.henderson@linaro.org, qemu-block@nongnu.org Subject: Re: [PATCH 5/6] migration: Rephrase message on failure to save / load Xen device state In-Reply-To: <20240513141703.549874-6-armbru@redhat.com> References: <20240513141703.549874-1-armbru@redhat.com> <20240513141703.549874-6-armbru@redhat.com> Date: Mon, 13 May 2024 15:07:28 -0300 Message-ID: <87cyppfuvz.fsf@suse.de> MIME-Version: 1.0 Content-Type: text/plain X-Spamd-Result: default: False [-6.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; DWL_DNSWL_MED(-2.00)[suse.de:dkim]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FUZZY_BLOCKED(0.00)[rspamd.com]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; ARC_NA(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_TRACE(0.00)[0:+]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; FROM_HAS_DN(0.00)[]; RCVD_TLS_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; DNSWL_BLOCKED(0.00)[2a07:de40:b281:106:10:150:64:167:received]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; TO_DN_SOME(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; RCPT_COUNT_SEVEN(0.00)[11]; MISSING_XM_UA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo, imap1.dmz-prg2.suse.org:rdns, suse.de:dkim, suse.de:email] X-Rspamd-Action: no action X-Rspamd-Queue-Id: C46A03538D X-Rspamd-Server: rspamd1.dmz-prg2.suse.org Received-SPF: pass client-ip=195.135.223.130; envelope-from=farosas@suse.de; helo=smtp-out1.suse.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Markus Armbruster writes: > Functions that use an Error **errp parameter to return errors should > not also report them to the user, because reporting is the caller's > job. When the caller does, the error is reported twice. When it > doesn't (because it recovered from the error), there is no error to > report, i.e. the report is bogus. > > qmp_xen_save_devices_state() and qmp_xen_load_devices_state() violate > this principle: they call qemu_save_device_state() and > qemu_loadvm_state(), which call error_report_err(). > > I wish I could clean this up now, but migration's error reporting is > too complicated (confused?) for me to mess with it. > > Instead, I'm merely improving the error reported by > qmp_xen_load_devices_state() and qmp_xen_load_devices_state() to the > QMP core from > > An IO error has occurred > > to > saving Xen device state failed > > and > > loading Xen device state failed > > respectively. > > Signed-off-by: Markus Armbruster Acked-by: Fabiano Rosas