From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp2130.oracle.com ([156.151.31.86]:43320 "EHLO userp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726867AbfFTQub (ORCPT ); Thu, 20 Jun 2019 12:50:31 -0400 Subject: [PATCH 09/12] mkfs: validate start and end of aligned logs From: "Darrick J. Wong" Date: Thu, 20 Jun 2019 09:50:27 -0700 Message-ID: <156104942708.1172531.3848135690205396934.stgit@magnolia> In-Reply-To: <156104936953.1172531.2121427277342917243.stgit@magnolia> References: <156104936953.1172531.2121427277342917243.stgit@magnolia> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: sandeen@sandeen.net, darrick.wong@oracle.com Cc: linux-xfs@vger.kernel.org From: Darrick J. Wong Validate that the start and end of the log stay within a single AG if we adjust either end to align to stripe units. Signed-off-by: Darrick J. Wong --- mkfs/xfs_mkfs.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c index ddb25ecc..468b8fde 100644 --- a/mkfs/xfs_mkfs.c +++ b/mkfs/xfs_mkfs.c @@ -3033,15 +3033,28 @@ align_internal_log( struct xfs_mount *mp, int sunit) { + uint64_t logend; + /* round up log start if necessary */ if ((cfg->logstart % sunit) != 0) cfg->logstart = ((cfg->logstart + (sunit - 1)) / sunit) * sunit; + /* If our log start overlaps the next AG's metadata, fail. */ + if (!xfs_verify_fsbno(mp, cfg->logstart)) { + fprintf(stderr, +_("Due to stripe alignment, the internal log start (%lld) cannot be aligned\n" + "within an allocation group.\n"), + (long long) cfg->logstart); + usage(); + } + /* round up/down the log size now */ align_log_size(cfg, sunit); /* check the aligned log still fits in an AG. */ - if (cfg->logblocks > cfg->agsize - XFS_FSB_TO_AGBNO(mp, cfg->logstart)) { + logend = cfg->logstart + cfg->logblocks - 1; + if (XFS_FSB_TO_AGNO(mp, cfg->logstart) != XFS_FSB_TO_AGNO(mp, logend) || + !xfs_verify_fsbno(mp, logend)) { fprintf(stderr, _("Due to stripe alignment, the internal log size (%lld) is too large.\n" "Must fit within an allocation group.\n"),