[Bugs] [Bug 1555195] New: [Ganesha] Duplicate volume export entries in ganesha.conf causing volume unexport to fail

bugzilla at redhat.com bugzilla at redhat.com
Wed Mar 14 06:40:50 UTC 2018 

https://bugzilla.redhat.com/show_bug.cgi?id=1555195

            Bug ID: 1555195
           Summary: [Ganesha] Duplicate volume export entries in
                    ganesha.conf causing volume unexport to fail
           Product: GlusterFS
           Version: 3.10
         Component: glusterd
          Priority: urgent
          Assignee: jthottan at redhat.com
          Reporter: jthottan at redhat.com
                CC: bugs at gluster.org, dang at redhat.com, ffilz at redhat.com,
                    grajoria at redhat.com, jthottan at redhat.com,
                    msaini at redhat.com, rhs-bugs at redhat.com,
                    storage-qa-internal at redhat.com
            Blocks: 1551186



+++ This bug was initially created as a clone of Bug #1551186 +++

Description of problem:

While exporting multiple volumes,duplicate volume entries are been observed in
/etc/ganesha/ganesha.conf which leads to failure while unexporting volumes

Version-Release number of selected component (if applicable):

3.10


How reproducible:
3/3


Steps to Reproduce:

1.Create 4 node ganesha cluster
2.Create and start 25 volumes
3.Export all volumes via ganesha
for i in $(seq 1 25)
do
        gluster v set vol$i ganesha.enable on
        sleep 10
done
4.Unexport the ganesha volumes
for i in $(seq 1 25)
do
        gluster v set vol$i ganesha.enable off
        sleep 10
done

Actual results:
In /etc/ganesha/ganesha.conf ,duplicate volume export entries are observed
causing volume unexport failed.

========
#/etc/ganesha/ganesha.conf


EXPORT_DEFAULTS {
    # To reflect nfsnobody
        Anonymous_uid = 65534;
        Anonymous_gid = 65534;
}
%include "/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol1.conf"
%include "/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol2.conf"
%include "/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol3.conf"
%include "/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol4.conf"
%include "/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol5.conf"
%include "/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol6.conf"
%include "/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol7.conf"
%include "/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol8.conf"
%include "/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol9.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol10.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol11.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol12.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol13.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol14.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol15.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol15.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol16.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol17.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol18.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol18.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol19.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol20.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol20.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol21.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol21.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol22.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol23.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol23.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol24.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol25.conf"
%include
"/var/run/gluster/shared_storage/nfs-ganesha/exports/export.vol25.conf"



[root at dhcp37-218 exports]# ls
export.vol10.conf  export.vol14.conf  export.vol18.conf  export.vol21.conf 
export.vol25.conf  export.vol5.conf  export.vol9.conf
export.vol11.conf  export.vol15.conf  export.vol19.conf  export.vol22.conf 
export.vol2.conf   export.vol6.conf
export.vol12.conf  export.vol16.conf  export.vol1.conf   export.vol23.conf 
export.vol3.conf   export.vol7.conf
export.vol13.conf  export.vol17.conf  export.vol20.conf  export.vol24.conf 
export.vol4.conf   export.vol8.conf


# showmount -e
Export list for dhcp37-218.lab.eng.blr.redhat.com:
/vol1  (everyone)
/vol2  (everyone)
/vol3  (everyone)
/vol4  (everyone)
/vol5  (everyone)
/vol6  (everyone)
/vol7  (everyone)
/vol8  (everyone)
/vol9  (everyone)
/vol10 (everyone)
/vol11 (everyone)
/vol12 (everyone)
/vol13 (everyone)
/vol14 (everyone)
/vol15 (everyone)
/vol16 (everyone)
/vol17 (everyone)
/vol18 (everyone)
/vol19 (everyone)
/vol20 (everyone)
/vol21 (everyone)
/vol22 (everyone)
/vol23 (everyone)
/vol24 (everyone)
/vol25 (everyone)


Volume unexport-

# sh ganesha_export.sh 
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: success
volume set: failed: Staging failed on dhcp37-103.lab.eng.blr.redhat.com. Error:
Dynamic export addition/deletion failed. Please see log file for details
Staging failed on dhcp37-136.lab.eng.blr.redhat.com. Error: Dynamic export
addition/deletion failed. Please see log file for details
volume set: success
volume set: success
volume set: failed: Staging failed on dhcp37-103.lab.eng.blr.redhat.com. Error:
Dynamic export addition/deletion failed. Please see log file for details
Staging failed on dhcp37-136.lab.eng.blr.redhat.com. Error: Dynamic export
addition/deletion failed. Please see log file for details
volume set: success
volume set: failed: Staging failed on dhcp37-103.lab.eng.blr.redhat.com. Error:
Dynamic export addition/deletion failed. Please see log file for details
Staging failed on dhcp37-136.lab.eng.blr.redhat.com. Error: Dynamic export
addition/deletion failed. Please see log file for details
volume set: failed: Staging failed on dhcp37-103.lab.eng.blr.redhat.com. Error:
Dynamic export addition/deletion failed. Please see log file for details
Staging failed on dhcp37-136.lab.eng.blr.redhat.com. Error: Dynamic export
addition/deletion failed. Please see log file for details
volume set: success
volume set: failed: Staging failed on dhcp37-103.lab.eng.blr.redhat.com. Error:
Dynamic export addition/deletion failed. Please see log file for details
Staging failed on dhcp37-136.lab.eng.blr.redhat.com. Error: Dynamic export
addition/deletion failed. Please see log file for details
volume set: success
volume set: failed: Staging failed on dhcp37-103.lab.eng.blr.redhat.com. Error:
Dynamic export addition/deletion failed. Please see log file for details
Staging failed on dhcp37-136.lab.eng.blr.redhat.com. Error: Dynamic export
addition/deletion failed. Please see log file for details



=======================


Expected results:

Volume export/unexport should work fine


Additional info:

--- Additional comment from Jiffin on 2018-03-13 04:26:11 EDT ---

There is possibility of having multiple entries get created in ganesha.conf
because create-ganesha-export.sh during volume set ganesha.enable command and
can be executed from multiple nodes at the same time. Even though script checks
for duplicate entry, it cannot trusted properly. So it is better to execute the
script from only one node, so above scenarios can be avoided.

Second unexport failure due to duplicate entries I still need to debug that


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1551186
[Bug 1551186] [Ganesha] Duplicate volume export entries in ganesha.conf
causing volume unexport to fail
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