Liu Bo created test 284 for xfstests to exercise btrfs defragmentation.
One test sends an argument including "-s -1" meaning "start at negative one"
That's failing today, because parse_size now rejects negative numbers.
(that might be something to fix on its own, since length = (u64)-1
might imply the whole file, per kernel comments).
But has "start at -1" ever had an expected meaning? That doesn't make
sense to me, but the test does it:
+echo "a single file | start < 0 && 0 < len < file size | off"
+_rundefrag 1 2 1
...
+_btrfs_online_defrag()
+{
+ str=""
+ if [ "$2" = "2" ];then
+ str="$str -s -1 -l $((filesize / 2)) "
and expects a silent result:
...
+a single file | default | on
+a single file | start < 0 && 0 < len < file size | off
+a single file | start > file size && 0 < len < file size | off
...
What was this test intended to do when it was written?
Thanks,
-Eric
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