[LU-1533] return the wrong size in ll_getxattr

Thu, 9 Jan 2020 06:11:53 +0000

In ll_getxattr,
if (size == 0 && S_ISDIR(inode->i_mode)) {
/* XXX directory EA is fix for now, optimize to save

RPC transfer */
GOTO(out, rc = sizeof(struct lov_user_md));
when size == 0, it return the size of lov_user_md(lov_user_md_v1) as the LOV size. And if we set pool inside default EA, the return size would be less than the actual EA size(lov_user_md_v3). Then we will get error during rsync (with enable xattr).

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