Bug 1287468 - Unable to start nfs server.service if any of the client is down and dns unable to resolve the client name
Unable to start nfs server.service if any of the client is down and dns unabl...
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: nfs-utils (Show other bugs)
7.2
x86_64 Linux
urgent Severity urgent
: rc
: ---
Assigned To: Steve Dickson
Yongcheng Yang
: EasyFix, Patch, TestCaseProvided
: 1314200 1395062 (view as bug list)
Depends On:
Blocks: 1203710 1313485 1295577
  Show dependency treegraph
 
Reported: 2015-12-02 02:41 EST by Rinku
Modified: 2016-11-15 01:31 EST (History)
7 users (show)

See Also:
Fixed In Version: nfs-utils-1.3.0-0.24.el7
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2016-11-04 01:02:01 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Comment 4 Steve Dickson 2016-01-16 12:32:36 EST
The two needed upstream commits:

commit 076dd803330d93819c6e7862f515a8fa3997a83b
Author: Henrique Martins <linux@martins.cc>
Date:   Tue Nov 4 15:12:16 2014 -0500

    exportfs: changes handling of unresolvable entries

commit 612581573ba104404b86242ca35c2ff35abd5e72
Author: Rinku Kothiya <rkothiya@redhat.com>
Date:   Sat Jan 16 12:19:40 2016 -0500

    Set right error after getaddrinfo fails
Comment 5 Yongcheng Yang 2016-02-14 22:01:14 EST
Reproduced in latest RHEL-7.2 with nfs-utils-1.3.0-0.21.el7.
Will generate automatic case later.

[root@hp-dl380pg8-01 ~]# cat /etc/exports
/export_test   *(rw,sync,no_root_squash)
/mnt    non-exist.com(rw,sync,no_root_squash)
[root@hp-dl380pg8-01 ~]# service nfs restart
Redirecting to /bin/systemctl restart  nfs.service
Job for nfs-server.service failed because the control process exited with error code. See "systemctl status nfs-server.service" and "journalctl -xe" for details.
[root@hp-dl380pg8-01 ~]# echo $?
1
[root@hp-dl380pg8-01 ~]# service nfs status -l
Redirecting to /bin/systemctl status  -l nfs.service
● nfs-server.service - NFS server and services
   Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Mon 2016-02-15 10:58:22 CST; 40s ago
  Process: 15403 ExecStopPost=/usr/sbin/exportfs -f (code=exited, status=0/SUCCESS)
  Process: 15400 ExecStopPost=/usr/sbin/exportfs -au (code=exited, status=0/SUCCESS)
  Process: 15398 ExecStop=/usr/sbin/rpc.nfsd 0 (code=exited, status=0/SUCCESS)
  Process: 15223 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)
  Process: 15443 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=1/FAILURE)
 Main PID: 15223 (code=exited, status=0/SUCCESS)

Feb 15 10:58:22 hp-dl380pg8-01.rhts.eng.pek2.redhat.com systemd[1]: Starting NFS server and services...
Feb 15 10:58:22 hp-dl380pg8-01.rhts.eng.pek2.redhat.com exportfs[15443]: exportfs: Failed to resolve non-exist.com
Feb 15 10:58:22 hp-dl380pg8-01.rhts.eng.pek2.redhat.com exportfs[15443]: exportfs: Failed to resolve non-exist.com
Feb 15 10:58:22 hp-dl380pg8-01.rhts.eng.pek2.redhat.com systemd[1]: nfs-server.service: control process exited, code=exited status=1
Feb 15 10:58:22 hp-dl380pg8-01.rhts.eng.pek2.redhat.com systemd[1]: Failed to start NFS server and services.
Feb 15 10:58:22 hp-dl380pg8-01.rhts.eng.pek2.redhat.com systemd[1]: Unit nfs-server.service entered failed state.
Feb 15 10:58:22 hp-dl380pg8-01.rhts.eng.pek2.redhat.com systemd[1]: nfs-server.service failed.
[root@hp-dl380pg8-01 ~]# exportfs -v
/export_test  	<world>(rw,wdelay,no_root_squash,no_subtree_check,sec=sys,rw,secure,no_root_squash,no_all_squash)
[root@hp-dl380pg8-01 ~]# rpm -q nfs-utils
nfs-utils-1.3.0-0.21.el7.x86_64
[root@hp-dl380pg8-01 ~]#
Comment 7 Steve Dickson 2016-04-26 14:39:51 EDT
*** Bug 1314200 has been marked as a duplicate of this bug. ***
Comment 10 Yongcheng Yang 2016-05-17 03:15:38 EDT
Move to VERIFIED according to comment 9.

Will continue to run the automatic case in the future.
Comment 11 Yongcheng Yang 2016-05-30 05:52:40 EDT
(In reply to Steve Dickson from comment #4)
> The two needed upstream commits:
> 
> commit 076dd803330d93819c6e7862f515a8fa3997a83b
> Author: Henrique Martins <linux@martins.cc>
> Date:   Tue Nov 4 15:12:16 2014 -0500
> 
>     exportfs: changes handling of unresolvable entries
> 

Please NOTE this patch has introduced a regression.

Already filed Bug 1340788 to trace it and will keep this one as VERIFIED.

Just list the  description of this regression following:

Previously if there is nothing to export and execute "exportfs -a/-r", the Return Code is 0. But now it will emit an ERROR and return 1.

Previously with nfs-utils-1.3.0-0.21.el7
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[root@hp-dl385pg8-08 ~]# ls /etc/exports.d/
[root@hp-dl385pg8-08 ~]# cat /etc/exports
[root@hp-dl385pg8-08 ~]# exportfs -a
[root@hp-dl385pg8-08 ~]# echo $?
0
[root@hp-dl385pg8-08 ~]# exportfs -r
[root@hp-dl385pg8-08 ~]# echo $?
0
[root@hp-dl385pg8-08 ~]# exportfs -v
[root@hp-dl385pg8-08 ~]# 
[root@hp-dl385pg8-08 ~]# rpm -q nfs-utils
nfs-utils-1.3.0-0.21.el7.x86_64
[root@hp-dl385pg8-08 ~]# 

But now, with this version nfs-utils-1.3.0-0.24.el7
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[root@hp-dl385pg8-08 ~]# rpm -q nfs-utils
nfs-utils-1.3.0-0.24.el7.x86_64
[root@hp-dl385pg8-08 ~]# exportfs -a
exportfs: No file systems exported!  <<<<<<<<<<<<<<
[root@hp-dl385pg8-08 ~]# echo $?
1      <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[root@hp-dl385pg8-08 ~]# exportfs -r
exportfs: No file systems exported!  <<<<<<<<<<<<<<
[root@hp-dl385pg8-08 ~]# echo $?
1      <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
[root@hp-dl385pg8-08 ~]# exportfs -v
[root@hp-dl385pg8-08 ~]# 

And what's even worse, it return this ERROR even if
using extra export.d files to export:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[root@hp-dl385pg8-08 ~]# echo "/tmp *(rw,no_root_squash)" > /etc/exports.d/test.exports
[root@hp-dl385pg8-08 ~]# exportfs -a
exportfs: No file systems exported!
[root@hp-dl385pg8-08 ~]# echo $?
1
[root@hp-dl385pg8-08 ~]# exportfs -v
/tmp          	<world>(rw,wdelay,no_root_squash,no_subtree_check,sec=sys,rw,secure,no_root_squash,no_all_squash)
[root@hp-dl385pg8-08 ~]#
Comment 13 errata-xmlrpc 2016-11-04 01:02:01 EDT
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2383.html
Comment 14 Yongcheng Yang 2016-11-15 01:31:01 EST
*** Bug 1395062 has been marked as a duplicate of this bug. ***

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