From: Dave Chinner <dchinner@xxxxxxxxxx>
When we scan the filesystem freespace and inode maps in phase 2, we
don't report CRC errors that are found. We don't really care from a
repair perspective, because the trees are completely rebuilt from
the ground up in phase 5, but froma checking perspective we need to
inform the user that we found inconsistencies.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
repair/scan.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/repair/scan.c b/repair/scan.c
index d022723..9cd0e7d 100644
--- a/repair/scan.c
+++ b/repair/scan.c
@@ -82,6 +82,12 @@ scan_sbtree(
do_error(_("can't read btree block %d/%d\n"), agno, root);
return;
}
+ if (bp->b_error == EFSBADCRC || bp->b_error == EFSCORRUPTED) {
+ do_warn(_("btree block %d/%d is suspect, error %d\n"),
+ agno, root, bp->b_error);
+ suspect = 1;
+ }
+
(*func)(XFS_BUF_TO_BLOCK(bp), nlevels - 1, root, agno, suspect,
isroot, magic, priv);
libxfs_putbuf(bp);
@@ -123,6 +129,7 @@ scan_lbtree(
xfs_buf_t *bp;
int err;
int dirty = 0;
+ bool badcrc = false;
bp = libxfs_readbuf(mp->m_dev, XFS_FSB_TO_DADDR(mp, root),
XFS_FSB_TO_BB(mp, 1), 0, ops);
@@ -132,6 +139,19 @@ scan_lbtree(
XFS_FSB_TO_AGBNO(mp, root));
return(1);
}
+
+ /*
+ * only check for bad CRC here - caller will determine if there
+ * is a corruption or not and whether it got corrected and so needs
+ * writing back. CRC errors always imply we need to write the block.
+ */
+ if (bp->b_error == EFSBADCRC) {
+ do_warn(_("btree block %d/%d is suspect, error %d\n"),
+ XFS_FSB_TO_AGNO(mp, root),
+ XFS_FSB_TO_AGBNO(mp, root), bp->b_error);
+ badcrc = true;
+ }
+
err = (*func)(XFS_BUF_TO_BLOCK(bp), nlevels - 1,
type, whichfork, root, ino, tot, nex, blkmapp,
bm_cursor, isroot, check_dups, &dirty,
@@ -139,7 +159,7 @@ scan_lbtree(
ASSERT(dirty == 0 || (dirty && !no_modify));
- if (dirty && !no_modify)
+ if ((dirty || badcrc) && !no_modify)
libxfs_writebuf(bp, 0);
else
libxfs_putbuf(bp);
@@ -1066,6 +1086,9 @@ scan_freelist(
do_abort(_("can't read agfl block for ag %d\n"), agno);
return;
}
+ if (agflbuf->b_error == EFSBADCRC)
+ do_warn(_("agfl has bad CRC for ag %d\n"), agno);
+
freelist = XFS_BUF_TO_AGFL_BNO(mp, agflbuf);
i = be32_to_cpu(agf->agf_flfirst);
--
1.9.0
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