The unit of XFS_AGFL_DADDR(mp) is "basic block" whose size is "BBSIZE"
(512 bytes), so when "source_sectorsize" is not 512, it will cause the
target a corrupted filesystem.
Signed-off-by: Junxiao Bi <junxiao.bi@xxxxxxxxxx>
---
copy/xfs_copy.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/copy/xfs_copy.c b/copy/xfs_copy.c
index 39bb9d7..6b3396d 100644
--- a/copy/xfs_copy.c
+++ b/copy/xfs_copy.c
@@ -687,7 +687,7 @@ main(int argc, char **argv)
if (source_blocksize > source_sectorsize) {
/* get number of leftover sectors in last block of ag header */
- tmp_residue = ((XFS_AGFL_DADDR(mp) + 1) * source_sectorsize)
+ tmp_residue = ((XFS_AGFL_DADDR(mp) + 1) * BBSIZE)
% source_blocksize;
first_residue = (tmp_residue == 0) ? 0 :
source_blocksize - tmp_residue;
@@ -700,10 +700,10 @@ main(int argc, char **argv)
exit(1);
}
- first_agbno = (((XFS_AGFL_DADDR(mp) + 1) * source_sectorsize)
+ first_agbno = (((XFS_AGFL_DADDR(mp) + 1) * BBSIZE)
+ first_residue) / source_blocksize;
ASSERT(first_agbno != 0);
- ASSERT( ((((XFS_AGFL_DADDR(mp) + 1) * source_sectorsize)
+ ASSERT(((((XFS_AGFL_DADDR(mp) + 1) * BBSIZE)
+ first_residue) % source_blocksize) == 0);
/* now open targets */
--
1.7.1
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