[PATCH 11/22] xfs_repair: allow CoW staging extents in the realtime rmap records

Darrick J. Wong
2025-02-06T22:59:38Z

Don't flag the rt rmap btree as having errors if there are CoW staging
extent records in it and the filesystem supports reflink. As far as
reporting leftover staging extents, we'll report them when we scan the
rt refcount btree, in a future patch.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>
---
repair/scan.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/repair/scan.c b/repair/scan.c
index 7a74f87c5f0c61..7980795e3a6f9f 100644
--- a/repair/scan.c
+++ b/repair/scan.c
@@ -1407,9 +1407,20 @@ _("invalid length %llu in record %u of %s\n"),
continue;
}

- /* We only store file data and superblocks in the rtrmap. */
- if (XFS_RMAP_NON_INODE_OWNER(owner) &&
- owner != XFS_RMAP_OWN_FS) {
+ /*
+ * We only store file data, COW data, and superblocks in the
+ * rtrmap.
+ */
+ if (owner == XFS_RMAP_OWN_COW) {
+ if (!xfs_has_reflink(mp)) {
+ do_warn(
+_("invalid CoW staging extent in record %u of %s\n"),
+ i, name);
+ suspect++;
+ continue;
+ }
+ } else if (XFS_RMAP_NON_INODE_OWNER(owner) &&
+ owner != XFS_RMAP_OWN_FS) {
do_warn(
_("invalid owner %lld in record %u of %s\n"),
(long long int)owner, i, name);