btrfs/012: adjust how we populate the fs to convert

/lib/modules/$(uname -r)/ can have symlinks to the source tree where the
kernel was built from, which can have all sorts of stuff, which will
make the runtime for this test exceedingly long.  We're just trying to
copy some data into our tree to test with, we don't need the entire
devel tree of whatever we're doing.  Additionally VM's that aren't built
with modules will fail this test.

Update the test to use /etc, which will always exist.  Additionally use
timeout just in case there's large files or some other shenanigans so
the test doesn't run forever copying large amounts of files.

Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
[ fix use $TIMEOUT_PROG ]

diff --git a/tests/btrfs/012 b/tests/btrfs/012
index d9faf81ce1ad8ec545911316cb7fb93bc175a5d1..ab90c8a7208b5b46f0a5a4fb51390828902c56cd 100755 (executable)
--- a/tests/btrfs/012
+++ b/tests/btrfs/012
@@ -33,6 +33,8 @@ _require_non_zoned_device "${SCRATCH_DEV}"
 _require_loop
 _require_extra_fs ext4
 
+SOURCE_DIR=/etc
+BASENAME=$(basename $SOURCE_DIR)
 BLOCK_SIZE=`_get_block_size $TEST_DIR`
 
 # Create & populate an ext4 filesystem
@@ -41,9 +43,9 @@ $MKFS_EXT4_PROG -F -b $BLOCK_SIZE $SCRATCH_DEV > $seqres.full 2>&1 || \
 # Manual mount so we don't use -t btrfs or selinux context
 mount -t ext4 $SCRATCH_DEV $SCRATCH_MNT
 
-_require_fs_space $SCRATCH_MNT $(du -s /lib/modules/`uname -r` | ${AWK_PROG} '{print $1}')
+_require_fs_space $SCRATCH_MNT $(du -s $SOURCE_DIR | ${AWK_PROG} '{print $1}')
 
-cp -aR /lib/modules/`uname -r`/ $SCRATCH_MNT
+$TIMEOUT_PROG 10 cp -aRP $SOURCE_DIR $SCRATCH_MNT
 _scratch_unmount
 
 # Convert it to btrfs, mount it, verify the data
@@ -51,7 +53,7 @@ $BTRFS_CONVERT_PROG $SCRATCH_DEV >> $seqres.full 2>&1 || \
        _fail "btrfs-convert failed"
 _try_scratch_mount || _fail "Could not mount new btrfs fs"
 # (Ignore the symlinks which may be broken/nonexistent)
-diff -r /lib/modules/`uname -r`/ $SCRATCH_MNT/`uname -r`/ 2>&1 | grep -vw "source\|build"
+diff --no-dereference -r $SOURCE_DIR $SCRATCH_MNT/$BASENAME/ 2>&1
 
 # Old ext4 image file should exist & be consistent
 $E2FSCK_PROG -fn $SCRATCH_MNT/ext2_saved/image >> $seqres.full 2>&1 || \
@@ -62,12 +64,12 @@ mkdir -p $SCRATCH_MNT/mnt
 mount -o loop $SCRATCH_MNT/ext2_saved/image $SCRATCH_MNT/mnt || \
        _fail "could not loop mount saved ext4 image"
 # Ignore the symlinks which may be broken/nonexistent
-diff -r /lib/modules/`uname -r`/ $SCRATCH_MNT/mnt/`uname -r`/ 2>&1 | grep -vw "source\|build"
+diff --no-dereference -r $SOURCE_DIR $SCRATCH_MNT/mnt/$BASENAME/ 2>&1
 umount $SCRATCH_MNT/mnt
 
 # Now put some fresh data on the btrfs fs
 mkdir -p $SCRATCH_MNT/new 
-cp -aR /lib/modules/`uname -r`/ $SCRATCH_MNT/new
+$TIMEOUT_PROG 10 cp -aRP $SOURCE_DIR $SCRATCH_MNT/new
 
 _scratch_unmount
 
@@ -82,7 +84,7 @@ $E2FSCK_PROG -fn $SCRATCH_DEV >> $seqres.full 2>&1 || \
 # Mount the un-converted ext4 device & check the contents
 mount -t ext4 $SCRATCH_DEV $SCRATCH_MNT
 # (Ignore the symlinks which may be broken/nonexistent)
-diff -r /lib/modules/`uname -r`/ $SCRATCH_MNT/`uname -r`/ 2>&1 | grep -vw "source\|build"
+diff --no-dereference -r $SOURCE_DIR $SCRATCH_MNT/$BASENAME/ 2>&1
 
 _scratch_unmount