On 8/4/25 10:02, Qu Wenruo wrote:
在 2025/7/29 15:51, Nirjhar Roy (IBM) 写道:
With large block sizes like 64k on powerpc with 64k pagesize
the test failed with the following logs:
QA output created by 301
basic accounting
+subvol 256 mismatched usage 33947648 vs 4587520 \
(expected data 4194304 expected meta 393216 diff 29360128)
+subvol 256 mismatched usage 168165376 vs 138805248 \
(expected data 138412032 expected meta 393216 diff 29360128)
+subvol 256 mismatched usage 33947648 vs 4587520 \
(expected data 4194304 expected meta 393216 diff 29360128)
+subvol 256 mismatched usage 33947648 vs 4587520 \
(expected data 4194304 expected meta 393216 diff 29360128)
fallocate: Disk quota exceeded
(Please note that the above ouptut had to be modified a bit since
the number of characters in each line was much greater than the
72 characters.)
You don't need to break the line for raw output.
Noted.
The test creates nr_fill files each of size 8k i.e, 2x4k(stored in
fill_sz).
Now with 64k blocksize, 8k sized files occupy more than expected
sizes (i.e, 8k) due to internal fragmentation since 1 file
will occupy at least 1 block. Fix this by scaling the file size
(fill_sz)
with the blocksize.
You can just replace the fill_sz to 64K so that all block sizes will
work.
Just tested with 64K fill_sz, it works for both 4K and 64K block size
with 64K page size.
Okay, I will make the test work with 64k aligned values (similar to
suggestions to the previous fixes in this patch series).
--NR
Thanks,
Qu
Reported-by: Disha Goel <disgoel@xxxxxxxxxxxxx>
Signed-off-by: Nirjhar Roy (IBM) <nirjhar.roy.lists@xxxxxxxxx>
---
tests/btrfs/301 | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/tests/btrfs/301 b/tests/btrfs/301
index 6b59749d..7547ff0e 100755
--- a/tests/btrfs/301
+++ b/tests/btrfs/301
@@ -23,7 +23,13 @@ subv=$SCRATCH_MNT/subv
nested=$SCRATCH_MNT/subv/nested
snap=$SCRATCH_MNT/snap
nr_fill=512
-fill_sz=$((8 * 1024))
+
+_scratch_mkfs >> $seqres.full
+_scratch_mount
+blksz=`_get_block_size $SCRATCH_MNT`
+_scratch_unmount
+fill_sz=$(( 2 * blksz ))
+
total_fill=$(($nr_fill * $fill_sz))
nodesize=$($BTRFS_UTIL_PROG inspect-internal dump-super
$SCRATCH_DEV | \
grep nodesize | $AWK_PROG '{print $2}')
--
Nirjhar Roy
Linux Kernel Developer
IBM, Bangalore
