Assigning to Gaurav.

Gaurav, you can set this to resolved because the patch is now committed. Thanks.

Output of showmount -e is not consistent with the actual exportlist of NFS.

gaurav@gaurav-Vostro-3400:~$ sudo gluster volume info

Volume Name: new_vol1
Type: Distribute
Status: Started
Number of Bricks: 2
Transport-type: tcp
Bricks:
Brick1: gaurav-Vostro-3400:/home/gaurav/v19
Brick2: gaurav-Vostro-3400:/home/gaurav/v20
Options Reconfigured:
nfs.enable-ino32: yes

Volume Name: new_vol
Type: Distributed-Replicate
Status: Started
Number of Bricks: 2 x 4 = 8
Transport-type: tcp
Bricks:
Brick1: gaurav-Vostro-3400:/home/gaurav/v11
Brick2: gaurav-Vostro-3400:/home/gaurav/v12
Brick3: gaurav-Vostro-3400:/home/gaurav/v13
Brick4: gaurav-Vostro-3400:/home/gaurav/v14
Brick5: gaurav-Vostro-3400:/home/gaurav/v15
Brick6: gaurav-Vostro-3400:/home/gaurav/v16
Brick7: gaurav-Vostro-3400:/home/gaurav/v17
Brick8: gaurav-Vostro-3400:/home/gaurav/v18
Options Reconfigured:
performance.stat-prefetch: yes
diagnostics.client-log-level: TRACE
diagnostics.brick-log-level: TRACE
nfs.enable-ino32: yes

gaurav@gaurav-Vostro-3400:~$ sudo showmount -e
Export list for gaurav-Vostro-3400:
/new_vol1 *


It happens when exportlist contains more than one entries.

Its a timing issue so doen't happen consistently.

The problem is with handling child_up event in NFS, there we maintain a array of started volumes for NFS, we fill that array in child_up event for each volume, but in case of parallel child_up events for same volume, this array could contain inconsistent data as checking and inserting operations are not atomic and we are also not checking for duplicate entries while inserting.

I have tried out restarting glusterd several times, and the showmount -e has shown accurate result consistently,


[root@centos-qa-4 sbin]# showmount -e localhost
Export list for localhost:
/srj-dist *
/dist1    *
[root@centos-qa-4 sbin]# /etc/init.d/glusterd restart
Stopping glusterd:                                         [  OK  ]
Starting glusterd:                                         [  OK  ]
[root@centos-qa-4 sbin]# showmount -e localhost
Export list for localhost:
/srj-dist *
/dist1    *
[root@centos-qa-4 sbin]# /etc/init.d/glusterd restart
Stopping glusterd:                                         [  OK  ]
Starting glusterd:                                         [  OK  ]
[root@centos-qa-4 sbin]# showmount -e localhost
Export list for localhost:
/srj-dist *
/dist1    *
[root@centos-qa-4 sbin]#