From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
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@xxxxxxxxxx>
---
mkfs/xfs_mkfs.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/mkfs/xfs_mkfs.c b/mkfs/xfs_mkfs.c
index 3ca8c9dc..0862621a 100644
--- a/mkfs/xfs_mkfs.c
+++ b/mkfs/xfs_mkfs.c
@@ -3070,11 +3070,20 @@ align_internal_log(
if ((cfg->logstart % sunit) != 0)
cfg->logstart = ((cfg->logstart + (sunit - 1)) / sunit) * sunit;
+ /* if our log start rounds into the next AG we're done */
+ 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)) {
+ if (!xfs_verify_fsbno(mp, cfg->logstart + cfg->logblocks - 1)) {
fprintf(stderr,
_("Due to stripe alignment, the internal log size (%lld) is too large.\n"
"Must fit within an allocation group.\n"),
