Hi Torsten Krah, Thanks for your friendly reply. Part of the reason I asked the questions was for other readers of the bug to be able to diagnose similar problems.
Also, for more detailed debugging, here's a link to the current development version 3 source code: http://gitweb.samba.org/?p=samba.git;a=tree;f=source3/winbindd;hb=HEAD I don't know what's going to happen to winbindd with samba4's new code. I'm guessing that the expiration and failure to re-get the UID mapping can be seen at the top level in: http://gitweb.samba.org/?p=samba.git;a=blob;f=source3/winbindd/wb_uid2sid.c;hb=HEAD The only thing that might show up in a log at this level (or from this file anyway) looks to be: 50 DEBUG(10, ("idmap_cache_find_uid2sid found %d%s\n", 51 (int)uid, expired ? " (expired)": "")); 1 Any chance you see the above log line? Unless I misunderstand, the cache is expired, and requesting a mapping fails. That means the following is executed: 66 for (domain = domain_list(); domain != NULL; domain = domain->next) { 67 if (domain->have_idmap_config 68 && (uid >= domain->id_range_low) 69 && (uid <= domain->id_range_high)) { 70 state->dom_name = domain->name; 71 break; 72 } 73 } 74 75 child = idmap_child(); 76 77 subreq = rpccli_wbint_Uid2Sid_send( 78 state, ev, child->rpccli, state->dom_name, 79 uid, &state->sid); 80 if (tevent_req_nomem(subreq, req)) { 81 return tevent_req_post(req, ev); 82 } 83 tevent_req_set_callback(subreq, wb_uid2sid_done, req); 84 return req; 85 } So I'm guessing that means that the domain name isn't found, or there's a problem with rpccli_wbint_Uid2Sid_send(), but there are a few other possibilities. The next steps would be to: * Check if upstream's got any new information * Look at rpccli_wbint_Uid2Sid_send() * Check how the cache is initially populated and check if it's different code than the above code. * Test with caching disabled if possible. * Test in "offline" mode if possible. I haven't looked to see if this bug is filed upstream, or if it's mentioned on a mailing list of theirs. If it is, then any links would be nice. Drew Daniels Resume: http://www.boxheap.net/ddaniels/resume.html -- winbind forgets uid/name gid/name mappings in regulary periods https://bugs.launchpad.net/bugs/207791 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
