[LU-15163] osd_obj_map_recover() has to restart transaction

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0, Lustre 2.15.5
• Affects Version/s: Upstream
• Severity: 3
• Assignee: Alex Zhuravlev
• Reporter: Alex Zhuravlev

Description

osd_obj_map_recover() may stop current transaction to call vfs_unlink(), then continue to modify filesystem with no transaction:

                ldiskfs_journal_stop(jh);

                rc = -EEXIST;
                /* If the src object has never been modified, then remove it. */
                if (inode->i_size == 0 && inode->i_mode & S_ISUID &&
                    inode->i_mode & S_ISGID) {
                        rc = ll_vfs_unlink(src_parent, src_child);
                        if (unlikely(rc == -ENOENT))
                                rc = 0;
                }
                if (rc)
                        RETURN(rc);
        }

        bh = osd_ldiskfs_find_entry(src_parent, &src_child->d_name, &de,
                                    NULL, NULL);
        if (unlikely(IS_ERR(bh)))
                GOTO(unlock, rc = PTR_ERR(bh));

        rc = ldiskfs_delete_entry(jh, src_parent, de, bh);

Issue Links

• is related to: LU-15162 improve OI lookup concurrency