53 lines
1.7 KiB
Diff
53 lines
1.7 KiB
Diff
From 8da52988ad210958f21c178620bb1e44f1188cd0 Mon Sep 17 00:00:00 2001
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From: "Darrick J. Wong" <darrick.wong@oracle.com>
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Date: Tue, 25 Jun 2019 17:04:42 -0400
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Subject: [PATCH] mkfs: validate start and end of aligned logs
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Validate that the start and end of the log stay within a single AG if
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we adjust either end to align to stripe units.
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Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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Reviewed-by: Eric Sandeen <sandeen@redhat.com>
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Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
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---
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mkfs/xfs_mkfs.c | 15 ++++++++++++++-
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1 file changed, 14 insertions(+), 1 deletion(-)
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diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
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index ddb25ecc..468b8fde 100644
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--- a/mkfs/xfs_mkfs.c
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+++ b/mkfs/xfs_mkfs.c
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@@ -3033,15 +3033,28 @@ align_internal_log(
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struct xfs_mount *mp,
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int sunit)
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{
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+ uint64_t logend;
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+
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/* round up log start if necessary */
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if ((cfg->logstart % sunit) != 0)
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cfg->logstart = ((cfg->logstart + (sunit - 1)) / sunit) * sunit;
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+ /* If our log start overlaps the next AG's metadata, fail. */
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+ if (!xfs_verify_fsbno(mp, cfg->logstart)) {
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+ fprintf(stderr,
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+_("Due to stripe alignment, the internal log start (%lld) cannot be aligned\n"
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+ "within an allocation group.\n"),
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+ (long long) cfg->logstart);
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+ usage();
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+ }
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+
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/* round up/down the log size now */
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align_log_size(cfg, sunit);
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/* check the aligned log still fits in an AG. */
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- if (cfg->logblocks > cfg->agsize - XFS_FSB_TO_AGBNO(mp, cfg->logstart)) {
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+ logend = cfg->logstart + cfg->logblocks - 1;
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+ if (XFS_FSB_TO_AGNO(mp, cfg->logstart) != XFS_FSB_TO_AGNO(mp, logend) ||
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+ !xfs_verify_fsbno(mp, logend)) {
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fprintf(stderr,
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_("Due to stripe alignment, the internal log size (%lld) is too large.\n"
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"Must fit within an allocation group.\n"),
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--
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2.17.0
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