Recently I found that my disk space was eaten by results/shared/032.full
after one round of xfstests running. The file was filled with binary
bytes by the command:
`mkfs -t jffs2 /dev/mapper/test-2 >> results/shared/032.full 2>&1`
Manual of mkfs.jffs2:
========================================================================
The program mkfs.jffs2 creates a JFFS2 (Second Journalling Flash
File System) file system image and writes the resulting image to the
file specified by the -o option or by default to the standard output,
unless the standard output is a terminal device in which case mkfs.jffs2
will abort. The file system image is created using the files and
directories contained in the directory specified by the option -r or
the present directory, if the -r option is not specified.
========================================================================
So the command equals to
`mkfs -t jffs2 -r xfstests-dev /dev/mapper/test-2 \
-o results/shared/032.full >> results/shared/032.full 2>&1`
The output image 032.full is under the directory xfstests-dev.
mkfs.jffs2 keeps reading from 032.full in page size and append bytes
to 032.full until the disk where xfstests-devel located is full.
Fix it by setting @preargs to '-r /proc/fs -o' for jffs2, now the output
is $SCRATCH_DEV. Since mkfs.jffs2 doesn't check overwrite case, just
skip overwrite attempt.
Signed-off-by: Su Yue <l@xxxxxxxxxx>
---
tests/shared/032 | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tests/shared/032 b/tests/shared/032
index 00ae6860d9d5..5da606177440 100755
--- a/tests/shared/032
+++ b/tests/shared/032
@@ -55,6 +55,8 @@ do
[ $fs = ext3 ] && preargs="-F"
[ $fs = ext4 ] && preargs="-F"
[ $fs = ext4dev ] && preargs="-F"
+ # jffs2 mkfs requires '-r $directory' and '-o $image'
+ [ $fs = jffs2 ] && preargs="-r /proc/fs -o"
# overwite the first few Kb - should blow away superblocks
$here/src/devzero -n 20 $SCRATCH_DEV >/dev/null
@@ -66,6 +68,9 @@ do
if [ $? -eq 0 ] ; then
# next, ensure we don't overwrite it
+ # jffs mkfs don't check overwrite case
+ [ $fs = jffs2 ] && continue
+
echo "=== Attempting $FSTYP overwrite of $fs..." >>$seqres.full
${MKFS_PROG} -t $FSTYP $SCRATCH_DEV >>$seqres.full 2>&1
--
2.29.2
