From patchwork Sun Mar 9 22:28:59 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Benjamin Marzinski X-Patchwork-Id: 14009067 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 AA7F721C187 for ; Sun, 9 Mar 2025 22:29:13 +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=1741559355; cv=none; b=GV/ZymMpJT4MiKJtzSYS+FwHil2mGpKNMT59lAAkxsziXo3u7ga1Y2J4DMwKX1cbBS9PRmy2zq7ny48RTZWPj7HmYHCscAXA/kndGn2Yxd+4KnIeHPVNzStg8dxjgKgmVluylMOaBDe1oGim1agehiETJahcwagudZrV8aTnr3M= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741559355; c=relaxed/simple; bh=xjqrQy3/c2CAxNKpBKKoixokmpaWgzY9JitddRa4JL0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=T/wPo/753JCUvB+aVu8ztyEpcc2keAJgkvV6Q/Xn29IU3G/8vKHYd1gqG5fuFURis1JDyyvKgbRHXM0cKxA2Tn5KBBRbZsdKPqRxhlfUeLIvRvQp4qnnPtBrgwISztFy9GsIRKL/SVtTHfoaWytMHialXl0EQeC9ZvZQYYdCDIA= 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=iGL6n8/3; 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="iGL6n8/3" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1741559352; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mBTya5jDAn2ECaAH85zdtyIYqLGYimiGN42zC1yyuhw=; b=iGL6n8/3X5oBEy4tUFwD2tQb2/zHPuQC0uAuL0F0wCSRTyVLs1dGM7IUXw4MRKNq1RJbqj lJgCfbVO/OdM92gIcP0Q7no897NOjog7rcBYCkWP6dn6UFx4Ym48C40DONkQ4BliOeLuwe PL7e3fNrupQplely8vBzMJBwWzHm0ws= Received: from mx-prod-mc-04.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-382-inuSz8IPP6ShbcW1Lv_jiA-1; Sun, 09 Mar 2025 18:29:09 -0400 X-MC-Unique: inuSz8IPP6ShbcW1Lv_jiA-1 X-Mimecast-MFC-AGG-ID: inuSz8IPP6ShbcW1Lv_jiA_1741559347 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-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 756F719560AB; Sun, 9 Mar 2025 22:29:07 +0000 (UTC) Received: from bmarzins-01.fast.eng.rdu2.dc.redhat.com (unknown [10.6.23.247]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9B2EB19560AD; Sun, 9 Mar 2025 22:29:06 +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 (8.18.1/8.17.1) with ESMTPS id 529MT5eW449831 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Sun, 9 Mar 2025 18:29:05 -0400 Received: (from bmarzins@localhost) by bmarzins-01.fast.eng.rdu2.dc.redhat.com (8.18.1/8.18.1/Submit) id 529MT5EM449830; Sun, 9 Mar 2025 18:29:05 -0400 From: Benjamin Marzinski To: Mikulas Patocka , Mike Snitzer , Jens Axboe Cc: dm-devel@lists.linux.dev, linux-block@vger.kernel.org, Damien Le Moal , Christoph Hellwig Subject: [PATCH 3/7] dm: handle failures in dm_table_set_restrictions Date: Sun, 9 Mar 2025 18:28:59 -0400 Message-ID: <20250309222904.449803-4-bmarzins@redhat.com> In-Reply-To: <20250309222904.449803-1-bmarzins@redhat.com> References: <20250309222904.449803-1-bmarzins@redhat.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 If dm_table_set_restrictions() fails while swapping tables, device-mapper will continue using the previous table. It must be sure to leave the mapped_device in it's previous state on failure. Otherwise device-mapper could end up using the old table with settings from the unused table. Do not update the mapped device in dm_set_zones_restrictions(). Wait till after dm_table_set_restrictions() is sure to succeed to update the md zoned settings. Do the same with the dax settings, and if dm_revalidate_zones() fails, restore the original queue limits. Signed-off-by: Benjamin Marzinski --- drivers/md/dm-table.c | 24 ++++++++++++++++-------- drivers/md/dm-zone.c | 26 ++++++++++++++++++-------- drivers/md/dm.h | 1 + 3 files changed, 35 insertions(+), 16 deletions(-) diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 0ef5203387b2..4003e84af11d 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -1836,6 +1836,7 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, struct queue_limits *limits) { int r; + struct queue_limits old_limits; if (!dm_table_supports_nowait(t)) limits->features &= ~BLK_FEAT_NOWAIT; @@ -1862,16 +1863,11 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, if (dm_table_supports_flush(t)) limits->features |= BLK_FEAT_WRITE_CACHE | BLK_FEAT_FUA; - if (dm_table_supports_dax(t, device_not_dax_capable)) { + if (dm_table_supports_dax(t, device_not_dax_capable)) limits->features |= BLK_FEAT_DAX; - if (dm_table_supports_dax(t, device_not_dax_synchronous_capable)) - set_dax_synchronous(t->md->dax_dev); - } else + else limits->features &= ~BLK_FEAT_DAX; - if (dm_table_any_dev_attr(t, device_dax_write_cache_enabled, NULL)) - dax_write_cache(t->md->dax_dev, true); - /* For a zoned table, setup the zone related queue attributes. */ if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) && (limits->features & BLK_FEAT_ZONED)) { @@ -1883,6 +1879,7 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, if (dm_table_supports_atomic_writes(t)) limits->features |= BLK_FEAT_ATOMIC_WRITES; + old_limits = q->limits; r = queue_limits_set(q, limits); if (r) return r; @@ -1894,10 +1891,21 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) && (limits->features & BLK_FEAT_ZONED)) { r = dm_revalidate_zones(t, q); - if (r) + if (r) { + queue_limits_set(q, &old_limits); return r; + } } + if (IS_ENABLED(CONFIG_BLK_DEV_ZONED)) + dm_finalize_zone_settings(t, limits); + + if (dm_table_supports_dax(t, device_not_dax_synchronous_capable)) + set_dax_synchronous(t->md->dax_dev); + + if (dm_table_any_dev_attr(t, device_dax_write_cache_enabled, NULL)) + dax_write_cache(t->md->dax_dev, true); + dm_update_crypto_profile(q, t); return 0; } diff --git a/drivers/md/dm-zone.c b/drivers/md/dm-zone.c index 20edd3fabbab..681058feb63b 100644 --- a/drivers/md/dm-zone.c +++ b/drivers/md/dm-zone.c @@ -340,12 +340,8 @@ int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q, * mapped device queue as needing zone append emulation. */ WARN_ON_ONCE(queue_is_mq(q)); - if (dm_table_supports_zone_append(t)) { - clear_bit(DMF_EMULATE_ZONE_APPEND, &md->flags); - } else { - set_bit(DMF_EMULATE_ZONE_APPEND, &md->flags); + if (!dm_table_supports_zone_append(t)) lim->max_hw_zone_append_sectors = 0; - } /* * Determine the max open and max active zone limits for the mapped @@ -383,9 +379,6 @@ int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q, lim->zone_write_granularity = 0; lim->chunk_sectors = 0; lim->features &= ~BLK_FEAT_ZONED; - clear_bit(DMF_EMULATE_ZONE_APPEND, &md->flags); - md->nr_zones = 0; - disk->nr_zones = 0; return 0; } @@ -408,6 +401,23 @@ int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q, return 0; } +void dm_finalize_zone_settings(struct dm_table *t, struct queue_limits *lim) +{ + struct mapped_device *md = t->md; + + if (lim->features & BLK_FEAT_ZONED) { + if (dm_table_supports_zone_append(t)) + clear_bit(DMF_EMULATE_ZONE_APPEND, &md->flags); + else + set_bit(DMF_EMULATE_ZONE_APPEND, &md->flags); + } else { + clear_bit(DMF_EMULATE_ZONE_APPEND, &md->flags); + md->nr_zones = 0; + md->disk->nr_zones = 0; + } +} + + /* * IO completion callback called from clone_endio(). */ diff --git a/drivers/md/dm.h b/drivers/md/dm.h index a0a8ff119815..e5d3a9f46a91 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -102,6 +102,7 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t); int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q, struct queue_limits *lim); int dm_revalidate_zones(struct dm_table *t, struct request_queue *q); +void dm_finalize_zone_settings(struct dm_table *t, struct queue_limits *lim); void dm_zone_endio(struct dm_io *io, struct bio *clone); #ifdef CONFIG_BLK_DEV_ZONED int dm_blk_report_zones(struct gendisk *disk, sector_t sector,