From patchwork Tue Nov 26 18:42:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Marzinski X-Patchwork-Id: 13886308 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1BF941DE3D9 for ; Tue, 26 Nov 2024 18:42:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732646556; cv=none; b=Cc80dLRTg4qUhwQa4fijXNYRRyoLU2lakSTrbUGTpL4e5KjTbtst8EHCpvhpgQmFqcYi5Nu4urX22Xiky1l9mTxi+gzEiNYj9quhU14BHSE9fp9T0+OnSg3vZFRUvhtgv9OpQhgZmAJMeF5shjoYIrd9ady/3dbLkiBcXx4pfSE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732646556; c=relaxed/simple; bh=J3d+yAjAuj16m2elbdgl2lCvpc2kUpSKE3kvY9iKO14=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:content-type; b=RPwDj48BvVQ3L7OQn2Q50QERxo0bkBsevOr+FNPjxIQ36S8s3PPKbJdR4KGYh22GYmxTVfpXABtMtqRO8PvOzHDefVjWcXosfzl1dJ6ZLxUNkRTKc4kxgdGORydkADlH89rtRm/NKmauYgotziBS0ye8bMRS3h0Kmzu0eHqHz5k= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=b+m6LXFg; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="b+m6LXFg" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1732646554; 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=B/ZrZErwHwYycc+sEKMeX8EMSHMxC5Zz6MQhc2qdMMo=; b=b+m6LXFgCh3qM58/4eNyPRzAO5GnNxrigcY7ELxmgU4hmw9JE5TMnxUfQFg+g+r1DNJ7Z0 rRFVVoChbsYG3liq5fKvcxKV1XCULiPpaDgk6m3X2U3VixUEl/7Xt+NcGgOYN3RR4qKvXK /u/3AokZLt1gFNwJmL6jQBxUyOfTOWg= Received: from mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-554-Iw_2UteAOv646lLSDAxYdw-1; Tue, 26 Nov 2024 13:42:28 -0500 X-MC-Unique: Iw_2UteAOv646lLSDAxYdw-1 X-Mimecast-MFC-AGG-ID: Iw_2UteAOv646lLSDAxYdw Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 6E43B1954B1A; Tue, 26 Nov 2024 18:42:27 +0000 (UTC) Received: from bmarzins-01.fast.eng.rdu2.dc.redhat.com (bmarzins-01.fast.eng.rdu2.dc.redhat.com [10.6.23.12]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 2C32A195E483; Tue, 26 Nov 2024 18:42:27 +0000 (UTC) Received: from bmarzins-01.fast.eng.rdu2.dc.redhat.com (localhost [127.0.0.1]) by bmarzins-01.fast.eng.rdu2.dc.redhat.com (8.17.2/8.17.1) with ESMTPS id 4AQIgPkA855508 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Tue, 26 Nov 2024 13:42:26 -0500 Received: (from bmarzins@localhost) by bmarzins-01.fast.eng.rdu2.dc.redhat.com (8.17.2/8.17.2/Submit) id 4AQIgPLp855507; Tue, 26 Nov 2024 13:42:25 -0500 From: Benjamin Marzinski To: Christophe Varoqui Cc: device-mapper development , Martin Wilck , Martin Wilck Subject: [PATCH v3 07/12] libmultipath: handle empty maps in dm_flush_map__ Date: Tue, 26 Nov 2024 13:42:19 -0500 Message-ID: <20241126184224.855459-8-bmarzins@redhat.com> In-Reply-To: <20241126184224.855459-1-bmarzins@redhat.com> References: <20241126184224.855459-1-bmarzins@redhat.com> Precedence: bulk X-Mailing-List: dm-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: Nl72__JL7MZcbWqSTM6GCXHlXdbINfwnir9vATMJk4M_1732646547 X-Mimecast-Originator: redhat.com content-type: text/plain; charset="US-ASCII"; x-default=true Make dm_flush_map__() remove empty devices, as long as they have valid multipath uuids. Signed-off-by: Benjamin Marzinski Reviewed-by: Martin Wilck --- libmultipath/devmapper.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/libmultipath/devmapper.c b/libmultipath/devmapper.c index e5f49a5b..b0bd0d4f 100644 --- a/libmultipath/devmapper.c +++ b/libmultipath/devmapper.c @@ -982,11 +982,16 @@ int dm_flush_map__ (const char *mapname, int flags, int retries) int udev_flags = 0; char *params __attribute__((cleanup(cleanup_charp))) = NULL; - if (libmp_mapinfo(DM_MAP_BY_NAME | MAPINFO_MPATH_ONLY | MAPINFO_CHECK_UUID, + r = libmp_mapinfo(DM_MAP_BY_NAME | MAPINFO_MPATH_ONLY | MAPINFO_CHECK_UUID, (mapid_t) { .str = mapname }, - (mapinfo_t) { .target = ¶ms }) != DMP_OK) + (mapinfo_t) { .target = ¶ms }); + if (r != DMP_OK && r != DMP_EMPTY) return DM_FLUSH_OK; /* nothing to do */ + /* device mapper will not let you resume an empty device */ + if (r == DMP_EMPTY) + flags &= ~DMFL_SUSPEND; + /* if the device currently has no partitions, do not run kpartx on it if you fail to delete it */ if (do_foreach_partmaps(mapname, has_partmap, NULL) == 0)