[LU-19711] TCU: can't stat the file correctly in the trash after remove it again

• Type: Technical task
• Resolution: Unresolved
• Priority: Medium
• Severity: 3
• Assignee: Qian Yingjin
• Reporter: Emoly Liu

Description

This issue can be reproduced by the following test case in sanityn.sh:

	local dir=$DIR/$tdir
	local f=$dir/f
	local policy=$(do_facet mds1 $LCTL get_param -n \
		mdd.*.trash_can_delete_policy | head -n1)
	local trash=$MOUNT/.lustre/trash

	trash_setup "uid"
	stack_trap "do_nodes $(comma_list $(mdts_nodes)) $LCTL set_param \
		mdd.*.trash_can_delete_policy=$policy"

	mkdir_on_mdt0 $dir || error "failed to mkdir $dir"
	pfid=$(path2fid $dir)

        # The first time to rm $f
	touch $f || error "failed to touch $f"
	rm $f || error "failed to rm $f"
	rm $trash/MDT0000/0/$pfid/$(basename $f) ||
		error "failed to rm $f from trash"

	# This combination is important. 
	tree $trash
	[[ ! -e $trash/MDT0000/0/$pfid/$(basename $f) ]] ||
		error "$(basename $f) should not be in trash"

	# The second time to rm $f
	touch $f || error "failed to touch $f"
	rm $f || error "failed to rm $f"
	ls -al $trash/MDT0000/0/$pfid/
	getfattr -n trusted.unrm $trash/MDT0000/0/$pfid/$(basename $f)
	tree $trash

	rm $trash/MDT0000/0/$pfid/$(basename $f) ||
		error "failed to rm $f from trash"

You can see the file can't be stated correctly in the trash and can't be removed in the second time:

mdd.lustre-MDT0000.trash_can_enable=1
mdd.lustre-MDT0000.trash_can_type=uid
Trash Can Type:
uid
/mnt/lustre/.lustre/trash
`-- MDT0000
    `-- 0
        `-- 0x200000401:0x3:0x0

3 directories, 0 files
ls: cannot access '/mnt/lustre/.lustre/trash/MDT0000/0/0x200000401:0x3:0x0/f': No such file or directory
total 8
d--------- 2 root root 4096 Dec 16 21:08 .
d--------- 3 root root 4096 Dec 16 21:08 ..
-????????? ? ?    ?       ?            ? f
getfattr: /mnt/lustre/.lustre/trash/MDT0000/0/0x200000401:0x3:0x0/f: No such file or directory
/mnt/lustre/.lustre/trash
`-- MDT0000
    `-- 0
        `-- 0x200000401:0x3:0x0

3 directories, 0 files
rm: cannot remove '/mnt/lustre/.lustre/trash/MDT0000/0/0x200000401:0x3:0x0/f': No such file or directory