Fix handling of block preallocation support in cases where the kernel
PAGE_SIZE is larger than the filesystem blocksize (e.g. Lustre+PPC).
There was an existing test to try and verify this behaviour using 1KB
blocksize, but it had a off-by-one error using pb.last_init_lblock
(which is 3 for a 4KB file) and was over-zealous in "fixing" the size
of inodes with 4KB of data blocks allocated.
Signed-off-by: Andreas Dilger <andreas.dilger@xxxxxxxxx>
---
e2fsck/pass1.c | 10 +++++++---
tests/f_eofblocks/expect.1 | 6 ++----
tests/f_eofblocks/expect.2 | 2 +-
tests/f_eofblocks/image.gz | Bin 1364 -> 1372 bytes
4 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c
index 50a8b99..898b7d0 100644
--- a/e2fsck/pass1.c
+++ b/e2fsck/pass1.c
@@ -2323,10 +2323,14 @@ static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
size = EXT2_I_SIZE(inode);
if ((pb.last_init_lblock >= 0) &&
- /* allow allocated blocks to end of PAGE_SIZE */
+ /* if size is smaller than expected by the block count,
+ * allow allocated blocks to end of PAGE_SIZE.
+ * last_init_lblock is the last in-use block, so it is
+ * the minimum expected file size. */
(size < (__u64)pb.last_init_lblock * fs->blocksize) &&
- (pb.last_init_lblock / blkpg * blkpg != pb.last_init_lblock ||
- size < (__u64)(pb.last_init_lblock & ~(blkpg-1)) *
+ ((pb.last_init_lblock + 1) / blkpg * blkpg !=
+ (pb.last_init_lblock + 1) ||
+ size < (__u64)(pb.last_init_lblock & ~(blkpg - 1)) *
fs->blocksize))
bad_size = 3;
else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
diff --git a/tests/f_eofblocks/expect.1 b/tests/f_eofblocks/expect.1
index 2e9133e..3422248 100644
--- a/tests/f_eofblocks/expect.1
+++ b/tests/f_eofblocks/expect.1
@@ -1,7 +1,5 @@
Pass 1: Checking inodes, blocks, and sizes
-Inode 30, i_size is 2048, should be 4096. Fix? yes
-
-Inode 31, i_size is 2048, should be 4096. Fix? yes
+Inode 31, i_size is 2048, should be 6144. Fix? yes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
@@ -9,5 +7,5 @@ Pass 4: Checking reference counts
Pass 5: Checking group summary information
test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
-test_filesys: 31/56 files (29.0% non-contiguous), 83/400 blocks
+test_filesys: 31/56 files (29.0% non-contiguous), 85/400 blocks
Exit status is 1
diff --git a/tests/f_eofblocks/expect.2 b/tests/f_eofblocks/expect.2
index 2a2bca5..0cce314 100644
--- a/tests/f_eofblocks/expect.2
+++ b/tests/f_eofblocks/expect.2
@@ -3,5 +3,5 @@ Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
-test_filesys: 31/56 files (29.0% non-contiguous), 83/400 blocks
+test_filesys: 31/56 files (29.0% non-contiguous), 85/400 blocks
Exit status is 0
diff --git a/tests/f_eofblocks/image.gz b/tests/f_eofblocks/image.gz
index 2586a6a7670ad609ba7e66911a8f7a8f4df96321..e1177b3a7d6f33ce135fe91c7b6d11bbb1ee09a3 100644
GIT binary patch
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--
1.7.3.4
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