[Gluster-users] Replication not working on server hang

[Steve]

-------- Original-Nachricht --------
> Datum: Mon, 31 Aug 2009 10:58:41 +1000 (EST)
> Von: "Jeff Evans" <jeffe at tricab.com>
> An: david at ols.es
> CC: gluster-users at gluster.org
> Betreff: Re: [Gluster-users] Replication not working on server hang

> Hola David,
> 
> > Maybe we could try to
> > see if all the ones experiencing this problem have something in
> > common.
> 
> Agreed.
> 
> > In our case the hanged server is:
> >
> > Dell PE2900
> > 2 x X5470 at 3.33 8Gb RAM
> > SAS 6/iR Integrated RAID Controller
> > 7 x SEAGATE ST31000640SS
> > 1 x SEAGATE ST3300656SS
> > Debian testing
> > Kernel 2.6.26-2
> >
> > server hanged when writing to a unified volume (7 x 1Tb +
> > namespace and system on the ST3300656SS)
> 
> We have:
> 
> IBM x3650
> 2 x X5460 at 3.16 32Gb RAM
> SATA Integrated RAID Controller
> 4 X 1TB SATA Hitachi HUA72101
> RHEL 5.3
> Kernel 2.6.18-128.4.1.el5xen
> Glusterfs 2.0.3 w/ patch 943
> 
> Couldn't be more different really!
> 
> Server hangs when building software on a 100GB replicated volume,
> mounted with direct-io-mode=disabled.
> 
> I have found that building:
> 
> http://mirror.cs.wisc.edu/pub/mirrors/ghost/AFPL/GhostPCL/ghostpcl_1.40.tar.bz2
> Reliably produces the hang in my case.
> Even just a grep -R of the source gives me the dreaded hang.
> 
I tested it now on my GlusterFS with XFS below and it works without issues:
-------
uranos test # wget http://mirror.cs.wisc.edu/pub/mirrors/ghost/AFPL/GhostPCL/ghostpcl_1.40.tar.bz2
--2009-08-31 03:49:06--  http://mirror.cs.wisc.edu/pub/mirrors/ghost/AFPL/GhostPCL/ghostpcl_1.40.tar.bz2
Resolving mirror.cs.wisc.edu... 128.105.103.12
Connecting to mirror.cs.wisc.edu|128.105.103.12|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 10093425 (9.6M) [application/x-tar]
Saving to: `ghostpcl_1.40.tar.bz2'

100%[=============================================================================>] 10,093,425   289K/s   in 35s

2009-08-31 03:49:42 (278 KB/s) - `ghostpcl_1.40.tar.bz2' saved [10093425/10093425]

uranos test # time tar xjf ghostpcl_1.40.tar.bz2

real    1m32.895s
user    0m4.520s
sys     0m0.720s
uranos test # time echo $(grep -iR "test" ghostpcl_1.40/ | wc -l)
3180

real    0m9.776s
user    0m0.070s
sys     0m0.310s
uranos test #
-------


> Talk of XFS being stable is encouraging me to give it a shot.
> 
> XFS isn't shipped with RHEL 5.3, but then neither is FUSE! (both
> should be in 5.4 though, finally).
> 
> Thanks, Jeff.
> 
Steve


> 
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