diff mbox series

[09/12] mkfs: validate start and end of aligned logs

Message ID 156104942708.1172531.3848135690205396934.stgit@magnolia (mailing list archive)
State Accepted
Headers show
Series xfsprogs-5.1: fix various problems | expand

Commit Message

Darrick J. Wong June 20, 2019, 4:50 p.m. UTC 
From: Darrick J. Wong <darrick.wong@oracle.com>

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 <darrick.wong@oracle.com>
---
 mkfs/xfs_mkfs.c |   15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

Comments

Eric Sandeen June 20, 2019, 7:46 p.m. UTC | #1 
On 6/20/19 11:50 AM, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
> 
> 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 <darrick.wong@oracle.com>

Reviewed-by: Eric Sandeen <sandeen@redhat.com>

> ---
>  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"),
>
diff mbox series

Patch

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"),