Re: [Gluster-devel] io-threads segfault

[Kevan Benson]

Yep, I got them both.  I added them at the same time, I knew to look at 
both to fix them.

Interestingly enough, I never seem to see any performance benefit from 
adding io-threads.  I suspect that either
a) I'm not utilizing them correctly or
b) My usage and testing doesn't trigger the cases where it's useful.

I've been focusing on fault tolerance and high availability up until 
now, so I'm just starting to experiment with the performance 
translators.  Does anyone have any suggestions for performance 
translators to use and where in a config where AFR and Unify are done on 
the client side?

Alexander Attarian wrote:
> And also master has master as its slave for io-threads, might want to
> fix it too :)
>
> On 10/4/07, Kevan Benson <address@hidden> wrote:
>   
> > Yep, it does.  Thanks!  I knew it was probably a config problem on my
> > side somewhere, but I figured you would want to know about the segfault.
> >
> > Anand Avati wrote:
> >     
> > > Oops,
> > >  'slave' has 'slave' as its subvolume in the spec. missed that check in the
> > > parser! thanks for notifying. a proper spec should still work for you
> > > though.
> > >
> > > thanks,
> > > avati
> > >
> > > On 10/5/07, Kevan Benson <address@hidden> wrote:
> > >
> > >       
> > > > Trying to start glusterfsd with this config causes a segfault.  Removing
> > > > io-threads sections results in a running config.  Looks like an infinite
> > > > loop of some sort.
> > > >
> > > > volume ns
> > > >         type storage/posix
> > > >         option directory /data/graphita/glustertest/namespace
> > > > end-volume
> > > >
> > > > volume master-raw
> > > >         type storage/posix
> > > >         option directory /data/graphita/glustertest/share
> > > > end-volume
> > > >
> > > > volume master-single
> > > >         type features/posix-locks
> > > >         subvolumes master-raw
> > > > end-volume
> > > >
> > > > volume master
> > > >            type performance/io-threads
> > > >            option thread-count 8
> > > >            option cache-size 64MB
> > > >            subvolumes master
> > > > end-volume
> > > >
> > > > volume slave-raw
> > > >         type storage/posix
> > > >         option directory /data/graphita/glustertest/afr
> > > > end-volume
> > > >
> > > > volume slave-single
> > > >         type features/posix-locks
> > > >         subvolumes slave-raw
> > > > end-volume
> > > >
> > > > volume slave
> > > >            type performance/io-threads
> > > >            option thread-count 8
> > > >            option cache-size 64MB
> > > >            subvolumes slave
> > > > end-volume
> > > >
> > > > volume server
> > > >         type protocol/server
> > > >         option transport-type tcp/server
> > > >         option listen-port 6996
> > > >         subvolumes ns master slave
> > > >         option auth.ip.ns.allow 172.16.1.*
> > > >         option auth.ip.master.allow 172.16.1.*
> > > >         option auth.ip.slave.allow 172.16.1.*
> > > > end-volume
> > > >
> > > > volume trace
> > > >         type debug/trace
> > > >         subvolumes server
> > > >         option debug on
> > > > end-volume
> > > >
> > > > Here's the backtrace.
> > > > #0  0x00d2b73a in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #1  0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #2  0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #3  0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #4  0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #5  0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #6  0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #7  0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #8  0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #9  0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #10 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #11 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #12 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #13 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #14 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #15 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #16 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #17 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #18 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #19 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #20 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > > #21 0x00d2b73f in xlator_init_rec (xl=0x8556008) at xlator.c:228
> > > >
> > > > This continues on, I haven't had the patience to find the end.
> > > >
> > > >
> > > > _______________________________________________
> > > > Gluster-devel mailing list
> > > > address@hidden
> > > > http://lists.nongnu.org/mailman/listinfo/gluster-devel
> > > >
> > > >
> > > >         
> > >
> > >
> > >       
> > _______________________________________________
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> >
> >     
>
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