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 X-Spam-Level: X-Spam-Status: No, score=-6.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 92D45C38A2D for ; Fri, 17 Apr 2020 15:09:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7297920857 for ; Fri, 17 Apr 2020 15:09:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="Oen9T4x/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728446AbgDQPJM (ORCPT ); Fri, 17 Apr 2020 11:09:12 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:48362 "EHLO us-smtp-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728567AbgDQPJK (ORCPT ); Fri, 17 Apr 2020 11:09:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587136148; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=sNVK9eLDDV1r6IH4OGj/VF/51UCqF7N6jSNhxVZlvOM=; b=Oen9T4x/nu4Zajn9kajwPBbcPj8aXOzS3nibjlnOOO9Z85bP4+VZY476Wi3KQiNVTYB2KZ UBTS0l45IrPnAzi3PAsIpoXmVNnhEg5focca3ZAtIiuvWzy0HBn539MvjxcL+/xdhpRinV uVUEu+MWt+QUfo3eHYGnWtjPPwsUH04= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-214-GNHGWts2OnCnFeLEFklpLw-1; Fri, 17 Apr 2020 11:09:06 -0400 X-MC-Unique: GNHGWts2OnCnFeLEFklpLw-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6FD128017F3 for ; Fri, 17 Apr 2020 15:09:05 +0000 (UTC) Received: from bfoster.bos.redhat.com (dhcp-41-2.bos.redhat.com [10.18.41.2]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2998060BE0 for ; Fri, 17 Apr 2020 15:09:05 +0000 (UTC) From: Brian Foster To: linux-xfs@vger.kernel.org Subject: [PATCH 12/12] xfs: random buffer write failure errortag Date: Fri, 17 Apr 2020 11:08:59 -0400 Message-Id: <20200417150859.14734-13-bfoster@redhat.com> In-Reply-To: <20200417150859.14734-1-bfoster@redhat.com> References: <20200417150859.14734-1-bfoster@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Content-Transfer-Encoding: quoted-printable Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org Introduce an error tag to randomly fail async buffer writes. This is primarily to facilitate testing of the XFS error configuration mechanism. Signed-off-by: Brian Foster --- fs/xfs/libxfs/xfs_errortag.h | 4 +++- fs/xfs/xfs_buf.c | 6 ++++++ fs/xfs/xfs_error.c | 3 +++ 3 files changed, 12 insertions(+), 1 deletion(-) diff --git a/fs/xfs/libxfs/xfs_errortag.h b/fs/xfs/libxfs/xfs_errortag.h index 79e6c4fb1d8a..2486dab19023 100644 --- a/fs/xfs/libxfs/xfs_errortag.h +++ b/fs/xfs/libxfs/xfs_errortag.h @@ -55,7 +55,8 @@ #define XFS_ERRTAG_FORCE_SCRUB_REPAIR 32 #define XFS_ERRTAG_FORCE_SUMMARY_RECALC 33 #define XFS_ERRTAG_IUNLINK_FALLBACK 34 -#define XFS_ERRTAG_MAX 35 +#define XFS_ERRTAG_BUF_IOERROR 35 +#define XFS_ERRTAG_MAX 36 =20 /* * Random factors for above tags, 1 means always, 2 means 1/2 time, etc. @@ -95,5 +96,6 @@ #define XFS_RANDOM_FORCE_SCRUB_REPAIR 1 #define XFS_RANDOM_FORCE_SUMMARY_RECALC 1 #define XFS_RANDOM_IUNLINK_FALLBACK (XFS_RANDOM_DEFAULT/10) +#define XFS_RANDOM_BUF_IOERROR XFS_RANDOM_DEFAULT =20 #endif /* __XFS_ERRORTAG_H_ */ diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 5120fed06075..a305db779156 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -1289,6 +1289,12 @@ xfs_buf_bio_end_io( struct bio *bio) { struct xfs_buf *bp =3D (struct xfs_buf *)bio->bi_private; + struct xfs_mount *mp =3D bp->b_mount; + + if (!bio->bi_status && + (bp->b_flags & XBF_WRITE) && (bp->b_flags & XBF_ASYNC) && + XFS_TEST_ERROR(false, mp, XFS_ERRTAG_BUF_IOERROR)) + bio->bi_status =3D errno_to_blk_status(-EIO); =20 /* * don't overwrite existing errors - otherwise we can lose errors on diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c index a21e9cc6516a..7f6e20899473 100644 --- a/fs/xfs/xfs_error.c +++ b/fs/xfs/xfs_error.c @@ -53,6 +53,7 @@ static unsigned int xfs_errortag_random_default[] =3D { XFS_RANDOM_FORCE_SCRUB_REPAIR, XFS_RANDOM_FORCE_SUMMARY_RECALC, XFS_RANDOM_IUNLINK_FALLBACK, + XFS_RANDOM_BUF_IOERROR, }; =20 struct xfs_errortag_attr { @@ -162,6 +163,7 @@ XFS_ERRORTAG_ATTR_RW(buf_lru_ref, XFS_ERRTAG_BUF_LRU_= REF); XFS_ERRORTAG_ATTR_RW(force_repair, XFS_ERRTAG_FORCE_SCRUB_REPAIR); XFS_ERRORTAG_ATTR_RW(bad_summary, XFS_ERRTAG_FORCE_SUMMARY_RECALC); XFS_ERRORTAG_ATTR_RW(iunlink_fallback, XFS_ERRTAG_IUNLINK_FALLBACK); +XFS_ERRORTAG_ATTR_RW(buf_ioerror, XFS_ERRTAG_BUF_IOERROR); =20 static struct attribute *xfs_errortag_attrs[] =3D { XFS_ERRORTAG_ATTR_LIST(noerror), @@ -199,6 +201,7 @@ static struct attribute *xfs_errortag_attrs[] =3D { XFS_ERRORTAG_ATTR_LIST(force_repair), XFS_ERRORTAG_ATTR_LIST(bad_summary), XFS_ERRORTAG_ATTR_LIST(iunlink_fallback), + XFS_ERRORTAG_ATTR_LIST(buf_ioerror), NULL, }; =20 --=20 2.21.1