From: Dave Chinner <dchinner@xxxxxxxxxx>
xfs_mdrestore writes the superblock after modifying it, and so the
CRC is not necessarily correct. make sure the CRC is correct
before we write the superblock back.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
mdrestore/xfs_mdrestore.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/mdrestore/xfs_mdrestore.c b/mdrestore/xfs_mdrestore.c
index 479e677..e57bdb2 100644
--- a/mdrestore/xfs_mdrestore.c
+++ b/mdrestore/xfs_mdrestore.c
@@ -169,6 +169,11 @@ perform_restore(
memset(block_buffer, 0, sb.sb_sectsize);
sb.sb_inprogress = 0;
libxfs_sb_to_disk((xfs_dsb_t *)block_buffer, &sb, XFS_SB_ALL_BITS);
+ if (xfs_sb_version_hascrc(&sb)) {
+ xfs_update_cksum(block_buffer, sb.sb_sectsize,
+ offsetof(struct xfs_sb, sb_crc));
+ }
+
if (pwrite(dst_fd, block_buffer, sb.sb_sectsize, 0) < 0)
fatal("error writing primary superblock: %s\n", strerror(errno));
--
1.7.10.4
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