[Gluster-devel] Rebalance is not working in single node cluster environment.

[Anand Nekkunti]

On 06/13/2015 02:27 PM, Atin Mukherjee wrote:
>
> Sent from Samsung Galaxy S4
> On 13 Jun 2015 13:15, "Raghavendra Talur" <raghavendra.talur at gmail.com 
> <mailto:raghavendra.talur at gmail.com>> wrote:
> >
> >
> >
> > On Sat, Jun 13, 2015 at 1:00 PM, Atin Mukherjee 
> <atin.mukherjee83 at gmail.com <mailto:atin.mukherjee83 at gmail.com>> wrote:
> >>
> >> Sent from Samsung Galaxy S4
> >> On 13 Jun 2015 12:58, "Anand Nekkunti" <anekkunt at redhat.com 
> <mailto:anekkunt at redhat.com>> wrote:
> >> >
> >> > Hi All
> >> >    Rebalance is not working in single node cluster environment ( 
> current test frame work ).  I am getting error in below test , it 
> seems re-balance is not migrated to  current cluster test framework.
> >> Could you pin point which test case fails and what log do you see?
> >> >
> >> > cleanup;
> >> > TEST launch_cluster 2;
> >> > TEST $CLI_1 peer probe $H2;
> >> >
> >> > EXPECT_WITHIN $PROBE_TIMEOUT 1 check_peers
> >> >
> >> > $CLI_1 volume create $V0 $H1:$B1/$V0  $H2:$B2/$V0
> >> > EXPECT 'Created' volinfo_field $V0 'Status';
> >> >
> >> > $CLI_1 volume start $V0
> >> > EXPECT 'Started' volinfo_field $V0 'Status';
> >> >
> >> > #Mount FUSE
> >> > TEST glusterfs -s $H1 --volfile-id=$V0 $M0;
> >> >
> >> > TEST mkdir $M0/dir{1..4};
> >> > TEST touch $M0/dir{1..4}/files{1..4};
> >> >
> >> > TEST $CLI_1 volume add-brick $V0 $H1:$B1/${V0}1 $H2:$B2/${V0}1
> >> >
> >> > TEST $CLI_1 volume rebalance $V0  start
> >> >
> >> > EXPECT_WITHIN 60 "completed" CLI_1_rebalance_status_field $V0
> >> >
> >> > $CLI_2 volume status $V0
> >> > EXPECT 'Started' volinfo_field $V0 'Status';
> >> >
> >> > cleanup;
> >> >
> >> > Regards
> >> > Anand.N
> >> >
> >> >
> >> >
> >> > _______________________________________________
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> >> > Gluster-devel at gluster.org <mailto:Gluster-devel at gluster.org>
> >> > http://www.gluster.org/mailman/listinfo/gluster-devel
> >> >
> >>
> >>
> >> _______________________________________________
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> >>
> >
> > If it is a crash of glusterd when you do rebalance start, it is 
> because of FORTIFY_FAIL in libc.
> > Here is the patch that Susant has already sent: 
> http://review.gluster.org/#/c/11090/
> >
> > You can verify that it is the same crash by checking the core in 
> gdb; a SIGABRT would be raised
> > after strncpy.
>

glusterd  is not crashing, but I am getting rebalance status as fail  in 
my test case. It is happening in test frame work ( any simulated cluster 
environment in same node ) only.
RCA:
1. we are passing always "localhost" as volfile server for rebalance 
xlator .
   2.Rebalance processes are  overwriting  unix socket and log files 
each other (All rebalance processes are creating socket with same name) .

I will send patch for this

Regards
Anand.N
>
> >
> AFAIR Anand tried it in mainline and that fix was already in place.  I 
> think this is something different.
> > --
> > Raghavendra Talur
> >
>

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