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Date: Fri, 23 Mar 2018 11:34:05 -0700
From: harshads <harshads@...gle.com>
To: tytso@....edu
Cc: linux-ext4@...r.kernel.org, harshads <harshads@...gle.com>
Subject: [PATCH] e2fsck: delete bad inode fix for bigalloc
While deleting a bad inode in fsck pass2, we should remove clusters
only once. We do it by remembering last released cluster while
deleting clusters one by one.
Signed-off-by: Harshad Shirwadkar <harshads@...gle.com>
---
e2fsck/pass2.c | 12 ++++++++++--
tests/f_bigalloc_badinode/expect.1 | 12 ++++++++++++
tests/f_bigalloc_badinode/expect.2 | 7 +++++++
tests/f_bigalloc_badinode/name | 1 +
tests/f_bigalloc_badinode/script | 24 ++++++++++++++++++++++++
5 files changed, 54 insertions(+), 2 deletions(-)
create mode 100644 tests/f_bigalloc_badinode/expect.1
create mode 100644 tests/f_bigalloc_badinode/expect.2
create mode 100644 tests/f_bigalloc_badinode/name
create mode 100644 tests/f_bigalloc_badinode/script
diff --git a/e2fsck/pass2.c b/e2fsck/pass2.c
index e922876d..c6aff71a 100644
--- a/e2fsck/pass2.c
+++ b/e2fsck/pass2.c
@@ -1610,6 +1610,7 @@ abort_free_dict:
struct del_block {
e2fsck_t ctx;
e2_blkcnt_t num;
+ blk64_t last_cluster;
};
/*
@@ -1624,14 +1625,20 @@ static int deallocate_inode_block(ext2_filsys fs,
void *priv_data)
{
struct del_block *p = priv_data;
+ blk64_t cluster = EXT2FS_B2C(fs, *block_nr);
if (*block_nr == 0)
return 0;
+
+ if (cluster == p->last_cluster)
+ return 0;
+
+ p->last_cluster = cluster;
if ((*block_nr < fs->super->s_first_data_block) ||
(*block_nr >= ext2fs_blocks_count(fs->super)))
return 0;
- if ((*block_nr % EXT2FS_CLUSTER_RATIO(fs)) == 0)
- ext2fs_block_alloc_stats2(fs, *block_nr, -1);
+
+ ext2fs_block_alloc_stats2(fs, *block_nr, -1);
p->num++;
return 0;
}
@@ -1692,6 +1699,7 @@ static void deallocate_inode(e2fsck_t ctx, ext2_ino_t ino, char* block_buf)
del_block.ctx = ctx;
del_block.num = 0;
+ del_block.last_cluster = 0;
pctx.errcode = ext2fs_block_iterate3(fs, ino, 0, block_buf,
deallocate_inode_block,
&del_block);
diff --git a/tests/f_bigalloc_badinode/expect.1 b/tests/f_bigalloc_badinode/expect.1
new file mode 100644
index 00000000..10ba096f
--- /dev/null
+++ b/tests/f_bigalloc_badinode/expect.1
@@ -0,0 +1,12 @@
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Symlink /testfile (inode #12) is invalid.
+Clear? yes
+
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+
+test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
+test_filesys: 11/64 files (0.0% non-contiguous), 96/1024 blocks
+Exit status is 1
diff --git a/tests/f_bigalloc_badinode/expect.2 b/tests/f_bigalloc_badinode/expect.2
new file mode 100644
index 00000000..30392d42
--- /dev/null
+++ b/tests/f_bigalloc_badinode/expect.2
@@ -0,0 +1,7 @@
+Pass 1: Checking inodes, blocks, and sizes
+Pass 2: Checking directory structure
+Pass 3: Checking directory connectivity
+Pass 4: Checking reference counts
+Pass 5: Checking group summary information
+test_filesys: 11/64 files (0.0% non-contiguous), 96/1024 blocks
+Exit status is 0
diff --git a/tests/f_bigalloc_badinode/name b/tests/f_bigalloc_badinode/name
new file mode 100644
index 00000000..e1ed2160
--- /dev/null
+++ b/tests/f_bigalloc_badinode/name
@@ -0,0 +1 @@
+delete bad inode handling for bigalloc filesystems
diff --git a/tests/f_bigalloc_badinode/script b/tests/f_bigalloc_badinode/script
new file mode 100644
index 00000000..9113e9c8
--- /dev/null
+++ b/tests/f_bigalloc_badinode/script
@@ -0,0 +1,24 @@
+if test -x $DEBUGFS_EXE; then
+
+SKIP_GUNZIP="true"
+TEST_DATA="$test_name.tmp"
+
+dd if=$TEST_BITS of=$TEST_DATA bs=4k count=2 seek=1> /dev/null 2>&1
+
+touch $TMPFILE
+mke2fs -Fq -t ext4 -O bigalloc -C 16384 $TMPFILE 1M > /dev/null 2>&1
+debugfs -w $TMPFILE << EOF > /dev/null 2>&1
+write $TEST_DATA testfile
+set_inode_field testfile i_mode 0120000
+quit
+EOF
+
+. $cmd_dir/run_e2fsck
+
+rm -f $TEST_DATA
+
+unset E2FSCK_TIME TEST_DATA
+
+else #if test -x $DEBUGFS_EXE; then
+ echo "$test_name: $test_description: skipped"
+fi
--
2.17.0.rc0.231.g781580f067-goog
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