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Date: Thu, 28 Jul 2011 00:57:38 -0600
From: Andreas Dilger <adilger@...mcloud.com>
To: tytso@....edu, linux-ext4@...r.kernel.org
Cc: Andreas Dilger <adilger@...mcloud.com>
Subject: [PATCH] tune2fs: kill external journal if device not found
Continue to remove the external journal device even if the device
cannot be found.
Add a test to verify that the journal device/UUID are actually removed
from the superblock. It isn't possible to use a real journal device
for testing without loopback devices and such (it must be a block device)
and this would invite complexity and failures in the regression test.
Signed-off-by: Andreas Dilger <adilger@...mcloud.com>
---
misc/tune2fs.c | 18 ++++++++++--------
tests/u_ext_jnl_rm/script | 28 ++++++++++++++++++++++++++++
2 files changed, 38 insertions(+), 8 deletions(-)
create mode 100644 tests/u_ext_jnl_rm/script
diff --git a/misc/tune2fs.c b/misc/tune2fs.c
index 9e369ec..7c78c6e 100644
--- a/misc/tune2fs.c
+++ b/misc/tune2fs.c
@@ -174,7 +174,7 @@ static void remove_journal_device(ext2_filsys fs)
journal_path =
ext2fs_find_block_device(fs->super->s_journal_dev);
if (!journal_path)
- return;
+ goto no_valid_journal;
}
#ifdef CONFIG_TESTIO_DEBUG
@@ -192,7 +192,8 @@ static void remove_journal_device(ext2_filsys fs)
_("while trying to open external journal"));
goto no_valid_journal;
}
- if (!(jfs->super->s_feature_incompat & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
+ if (!(jfs->super->s_feature_incompat &
+ EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) {
fprintf(stderr, _("%s is not a journal device.\n"),
journal_path);
goto no_valid_journal;
@@ -206,8 +207,8 @@ static void remove_journal_device(ext2_filsys fs)
}
jsb = (journal_superblock_t *) buf;
- if ((jsb->s_header.h_magic != (unsigned) ntohl(JFS_MAGIC_NUMBER)) ||
- (jsb->s_header.h_blocktype != (unsigned) ntohl(JFS_SUPERBLOCK_V2))) {
+ if ((jsb->s_header.h_magic != (unsigned)ntohl(JFS_MAGIC_NUMBER)) ||
+ (jsb->s_header.h_blocktype != (unsigned)ntohl(JFS_SUPERBLOCK_V2))) {
fputs(_("Journal superblock not found!\n"), stderr);
goto no_valid_journal;
}
@@ -215,8 +216,7 @@ static void remove_journal_device(ext2_filsys fs)
/* Find the filesystem UUID */
nr_users = ntohl(jsb->s_nr_users);
for (i = 0; i < nr_users; i++) {
- if (memcmp(fs->super->s_uuid,
- &jsb->s_users[i*16], 16) == 0)
+ if (memcmp(fs->super->s_uuid, &jsb->s_users[i * 16], 16) == 0)
break;
}
if (i >= nr_users) {
@@ -227,7 +227,7 @@ static void remove_journal_device(ext2_filsys fs)
}
nr_users--;
for (i = 0; i < nr_users; i++)
- memcpy(&jsb->s_users[i*16], &jsb->s_users[(i+1)*16], 16);
+ memcpy(&jsb->s_users[i * 16], &jsb->s_users[(i + 1) * 16], 16);
jsb->s_nr_users = htonl(nr_users);
/* Write back the journal superblock */
@@ -241,7 +241,9 @@ static void remove_journal_device(ext2_filsys fs)
no_valid_journal:
if (commit_remove_journal == 0) {
- fputs(_("Journal NOT removed\n"), stderr);
+ fputs(_("Cannot locate journal device. It was NOT removed\n"
+ "Use -f option to remove missing journal device.\n"),
+ stderr);
exit(1);
}
fs->super->s_journal_dev = 0;
diff --git a/tests/u_ext_jnl_rm/script b/tests/u_ext_jnl_rm/script
new file mode 100644
index 0000000..ff6c491
--- /dev/null
+++ b/tests/u_ext_jnl_rm/script
@@ -0,0 +1,28 @@
+printf "remove missing external journal device: "
+OUT=$test_name.log
+
+dd if=/dev/zero of=$TMPFILE bs=1k count=512 > /dev/null 2>&1
+
+echo mke2fs -q -F -o Linux -b 1024 $TMPFILE >> $OUT
+$MKE2FS -q -F -o Linux -I 128 -b 1024 $TMPFILE >> $OUT 2>&1
+
+echo "debugfs add journal device/UUID" >> $OUT
+$DEBUGFS -w -f - $TMPFILE <<- EOF >> $OUT 2>&1
+ feature has_journal
+ ssv journal_dev 0x9999
+ ssv journal_uuid 1db3f677-6832-4adb-bafc-8e4059c30a33
+EOF
+
+echo "tune2fs -f -O ^has_journal $TMPFILE" >> $OUT
+$TUNE2FS -f -O ^has_journal $TMPFILE >> $OUT 2>&1
+$DUMPE2FS -h $TMPFILE >> $OUT 2>&1
+if [ "$(grep 'Journal UUID:' $OUT)" ]; then
+ rm -f $test_name.ok
+ mv $test_name.log $test_name.failed
+ echo "failed"
+else
+ echo "ok"
+ mv $test_name.log $test_name.ok
+ rm -f $test_name.failed
+fi
+rm -f $TMPFILE
--
1.7.3.4
--
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