If during prefetch we encounter a bmbt block that fails the CRC check due to corruption in the unused part of the block, force the buffer back through the non-prefetch verifiers later so that the CRC is updated. Otherwise, the bad checksum goes unfixed and the kernel will still flag the bmbt block as invalid. Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx> --- repair/prefetch.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/repair/prefetch.c b/repair/prefetch.c index 1de3ec0..77d29c8 100644 --- a/repair/prefetch.c +++ b/repair/prefetch.c @@ -276,6 +276,14 @@ pf_scan_lbtree( XFS_BUF_SET_PRIORITY(bp, isadir ? B_DIR_BMAP : B_BMAP); + /* + * Make this bmbt buffer go back through the verifiers later so that + * we correct checksum errors stemming from bitflips in the unused + * parts of the bmbt block. + */ + if (bp->b_error == -EFSBADCRC) + bp->b_flags |= LIBXFS_B_UNCHECKED; + rc = (*func)(XFS_BUF_TO_BLOCK(bp), level - 1, isadir, args); libxfs_putbuf(bp); _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
