[Gluster-devel] Rsync failure problem

[Markus Gerstner]

Just experienced the same today when creating Bacula-Backups. It doesn't seem to happen with bonnie, so at the moment, I'm clueless about what might be causing it. Will investigate further tomorrow.


> -----Original Message-----
> From: gluster-devel-bounces+m.gerstner=bmiag.de at nongnu.org
> [mailto:gluster-devel-bounces+m.gerstner=bmiag.de at nongnu.org] On Behalf Of
> skimber
> Sent: Tuesday, July 15, 2008 4:13 PM
> To: gluster-devel at nongnu.org
> Subject: Re: [Gluster-devel] Rsync failure problem
> 
> 
> Further to my message below, I'm getting a lot (thousands?) of errors like
> this in the glusterfsd server log:
> 
> 2008-07-15 14:19:41 E [posix.c:1984:posix_setdents] brick-ns: Error
> creating
> file /data/export-ns/mydata/myfile.txt with mode (0100644)
> 
> Nothing relevant in syslog or the client logs I don't think.
> 
> 
> 
> 
> skimber wrote:
> >
> > Thanks for the responses.
> >
> > It turned out that the issue was with the disk in one of the clients.
> > Using the other client machine it appears to be working fine, although
> it
> > does seem very slow.
> >
> > An ls -l on a directory containing about 150 files took > 5 mins and the
> > rsync will only go at a rate of roughly one file every 3 seconds,
> average
> > size 30 to 50Kb.
> >
> > If I do the rsync to the client's local HD instead it's many files per
> > second.
> >
> > I have tried adding the following to the end of the client config from
> my
> > original post but it doesn't appear to have made any noticable
> difference:
> >
> > volume readahead
> >   type performance/read-ahead
> >   option page-size 128kB        # 256KB is the default option
> >   option page-count 4           # 2 is default option
> >   option force-atime-update off # default is off
> >   subvolumes unify
> > end-volume
> >
> > volume writebehind
> >   type performance/write-behind
> >   option aggregate-size 1MB # default is 0bytes
> >   option flush-behind on    # default is 'off'
> >   subvolumes readahead
> > end-volume
> >
> > volume io-cache
> >   type performance/io-cache
> >   option cache-size 64MB             # default is 32MB
> >   option page-size 1MB               # 128KB is default option
> >   option priority *:0                # default is '*:0'
> >   option force-revalidate-timeout 2  # default is 1
> >   subvolumes writebehind
> > end-volume
> >
> >
> > Can anyone tell me if I have done this correctly and/or suggest anything
> > else I can do to fix this performance issue?
> >
> > Thanks
> >
> > Simon
> >
> 
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> 
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