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[99.254.121.117]) by smtp.gmail.com with ESMTPSA id c21-20020a05620a11b500b0078d67886632sm5647726qkk.37.2024.04.23.15.38.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Apr 2024 15:38:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1713911924; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yHiFwpcPXTwGeM1wMg4mA9U44FpxrIXACxokqBE05fs=; b=N6ZQS+p/QaLgAFj1ToABQVP2IiIoc/0CcoCuHs+oRwRI2/vcPLGahF7lnK6ZZo4GtOq9WM +rDL9Srv9Ibuu/IsW/XucXJeBtG1CIu6y30a4Qxhm9zH5Z+BrCWMgrz8FH5baQcbPIaecE fXX+ZGv1rmTIEFtPLFPPiqiE2bwwH1w= X-MC-Unique: HpzZVVQCMMK4oANxXcfdiA-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1713911912; x=1714516712; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=yHiFwpcPXTwGeM1wMg4mA9U44FpxrIXACxokqBE05fs=; b=VfZEva8WMrYW9xFB7kAZAAnNZf6owzFbp2bYhaKcpr4aJt6AjIBj2TBRLOJE1AukiP 8ewWTU8x2r1kxtgHb9UUfjMbFdlUJ3lm2Or3iZK3giJILOJPrBBONbkAO6sAt/kqRzJu TV1mXZrwM58TM0bULSSfDPt9lLyfPmPmtTUTCOpO06FaxEYaTIb6RYQaeUcGkfqFW1h4 78KtMWBOWzAR6WbK2hnIWkXF78dcXIz/nybeLsAMipIUzNFCFItLtBLHLDh4+ZWqxtd9 XeSwLSV4/cZWEOJ1kAVBaSxVX3USqxBmHZQg2HGqgx9KHyD5cxDX9/XZp4jDn/f100Rp oSFQ== X-Gm-Message-State: AOJu0YwAoT4rnLDDrojcrr9iY+2RYJRck8VqYXLZhEv5giweAlI+V+Ab GoU8p/tKVHgP7tddpoFFJcFnce5ouVd2fp1iMIh2TKmqn2dlUOdsUh+1m3jkAno4MjsrPz+8M6B NRXXUH8PR9h6pNwm/C05JxsaXA+SEoMgc+0jDh4MRl/stJZmMBPtvGnMJye/f9NWdn1Oa+CIpq6 zadW6WXC0reGiCqdL99Seye4crTIifyPtSQg== X-Received: by 2002:a05:620a:3d09:b0:790:8bbb:dd5f with SMTP id tq9-20020a05620a3d0900b007908bbbdd5fmr702359qkn.3.1713911912123; Tue, 23 Apr 2024 15:38:32 -0700 (PDT) X-Google-Smtp-Source: AGHT+IH30vEj532dhsnWcieIV1tSTLDAZTzEiCpLgPGxyB6em9DSscR9rMkLs95wymKQLlON0x4OXA== X-Received: by 2002:a05:620a:3d09:b0:790:8bbb:dd5f with SMTP id tq9-20020a05620a3d0900b007908bbbdd5fmr702345qkn.3.1713911911396; Tue, 23 Apr 2024 15:38:31 -0700 (PDT) From: Peter Xu To: qemu-devel@nongnu.org Cc: peterx@redhat.com, Prasad Pandit , Peter Maydell , Fabiano Rosas , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Stefan Hajnoczi Subject: [PULL 12/26] migration: Always report an error in block_save_setup() Date: Tue, 23 Apr 2024 18:37:59 -0400 Message-ID: <20240423223813.3237060-13-peterx@redhat.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240423223813.3237060-1-peterx@redhat.com> References: <20240423223813.3237060-1-peterx@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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=170.10.129.124; envelope-from=peterx@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=-0.67, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1713912076529100003 From: C=C3=A9dric Le Goater This will prepare ground for future changes adding an Error** argument to the save_setup() handler. We need to make sure that on failure, block_save_setup() always sets a new error. Cc: Stefan Hajnoczi Reviewed-by: Fabiano Rosas Signed-off-by: C=C3=A9dric Le Goater Link: https://lore.kernel.org/r/20240320064911.545001-4-clg@redhat.com Signed-off-by: Peter Xu --- migration/block.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/migration/block.c b/migration/block.c index 2b9054889a..f8a11beb37 100644 --- a/migration/block.c +++ b/migration/block.c @@ -367,7 +367,7 @@ static void unset_dirty_tracking(void) } } =20 -static int init_blk_migration(QEMUFile *f) +static int init_blk_migration(QEMUFile *f, Error **errp) { BlockDriverState *bs; BlkMigDevState *bmds; @@ -378,7 +378,6 @@ static int init_blk_migration(QEMUFile *f) BlkMigDevState *bmds; BlockDriverState *bs; } *bmds_bs; - Error *local_err =3D NULL; int ret; =20 GRAPH_RDLOCK_GUARD_MAINLOOP(); @@ -406,6 +405,8 @@ static int init_blk_migration(QEMUFile *f) continue; } if (sectors < 0) { + error_setg(errp, "Error getting length of block device %s", + bdrv_get_device_name(bs)); ret =3D sectors; bdrv_next_cleanup(&it); goto out; @@ -442,9 +443,8 @@ static int init_blk_migration(QEMUFile *f) bs =3D bmds_bs[i].bs; =20 if (bmds) { - ret =3D blk_insert_bs(bmds->blk, bs, &local_err); + ret =3D blk_insert_bs(bmds->blk, bs, errp); if (ret < 0) { - error_report_err(local_err); goto out; } =20 @@ -714,6 +714,7 @@ static void block_migration_cleanup(void *opaque) static int block_save_setup(QEMUFile *f, void *opaque) { int ret; + Error *local_err =3D NULL; =20 trace_migration_block_save("setup", block_mig_state.submitted, block_mig_state.transferred); @@ -721,18 +722,27 @@ static int block_save_setup(QEMUFile *f, void *opaque) warn_report("block migration is deprecated;" " use blockdev-mirror with NBD instead"); =20 - ret =3D init_blk_migration(f); + ret =3D init_blk_migration(f, &local_err); if (ret < 0) { + error_report_err(local_err); return ret; } =20 /* start track dirty blocks */ ret =3D set_dirty_tracking(); if (ret) { + error_setg_errno(&local_err, -ret, + "Failed to start block dirty tracking"); + error_report_err(local_err); return ret; } =20 ret =3D flush_blks(f); + if (ret) { + error_setg_errno(&local_err, -ret, "Flushing block failed"); + error_report_err(local_err); + return ret; + } blk_mig_reset_dirty_cursor(); qemu_put_be64(f, BLK_MIG_FLAG_EOS); =20 --=20 2.44.0