[LU-8498] configuration from log 'nodemap' failed (-22)

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.9.0
• Labels: LS_RZ
• Severity: 1
• Assignee: Kit Westneat (Inactive)
• Reporter: Jinshan Xiong (Inactive)

Description

In current master 2.8.56, a newly created file system failed at mounting OST due to nodemap log error.

From the log message:

00000100:00000001:3.0:1470938259.243549:0:9524:0:(client.c:1052:ptlrpc_set_destroy()) Process leaving
00000100:00000001:3.0:1470938259.243549:0:9524:0:(client.c:2896:ptlrpc_queue_wait()) Process leaving (rc=0 : 0 : 0)
10000000:00000001:3.0:1470938259.243551:0:9524:0:(mgc_request.c:1716:mgc_process_recover_nodemap_log()) Process leaving via out (rc=18446744073709551594 : -22 : 0xffffffffffffffea)

it looks like the corresponding log has a zero size that triggered this error.

        if (ealen == 0) { /* no logs transferred */
#ifdef HAVE_SERVER_SUPPORT
                /* config changed since first read RPC */
                if (cld_is_nodemap(cld) && config_read_offset == 0) {
                        recent_nodemap = NULL;
                        nodemap_config_dealloc(new_config);
                        new_config = NULL;

                        CDEBUG(D_INFO, "nodemap config changed in transit, retrying\n");

                        /* setting eof to false, we request config again */
                        eof = false;
                        GOTO(out, rc = 0);
                }
#endif
                if (!eof)
                        rc = -EINVAL;
                GOTO(out, rc);
        }

We have a debug log and will attach it soon.

Issue Links

• is related to: LU-3291 IU UID/GID Mapping Feature