[Gluster-users] gluster 3.2.0 - totally broken?

[Justice London]

I had issues with hanging of mounts as well with 3.2. I fixed it via upping
the number of connections allowed to the fuse mount... by default it's
something silly low like 16. I don't quite understand why the basic options
are not at least slightly optimized for more than a few connections. Try
this and see if it helps with 3.2. It helped me, but this is also a 3.1.x
fix as well...

Edit: /etc/glusterd/vols/<volname>/<volname>-fuse.vol


<Replicate and brick entries above here>

volume <volname>-write-behind
    type performance/write-behind
    option cache-size 4MB
    option flush-behind on
    subvolumes <volname>-replicate-0
end-volume

volume <volname>-read-ahead
    type performance/read-ahead
    option page-count 4
    subvolumes <volname>-write-behind
end-volume

volume <volname>-io-cache
    type performance/io-cache
    option cache-size 768MB
    option cache-timeout 1
    subvolumes <volname>-read-ahead
end-volume

volume <volname>-quick-read
    type performance/quick-read
    option cache-timeout 1
    option cache-size 768MB
    option max-file-size 64kB
    subvolumes <volname>-io-cache
end-volume

#volume sitestore-stat-prefetch
#    type performance/stat-prefetch
#    subvolumes <volname>-quick-read
#end-volume

volume <volname>
    type debug/io-stats
    option latency-measurement off
    option count-fop-hits off
#    subvolumes <volname>-stat-prefetch
    subvolumes <volname>-quick-read
end-volume

Justice London

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-----Original Message-----
From: gluster-users-bounces at gluster.org
[mailto:gluster-users-bounces at gluster.org] On Behalf Of Tomasz Chmielewski
Sent: Wednesday, May 18, 2011 10:05 AM
To: Anthony J. Biacco
Cc: gluster-users at gluster.org
Subject: Re: [Gluster-users] gluster 3.2.0 - totally broken?

On 18.05.2011 18:56, Anthony J. Biacco wrote:
> I'm using it in real-world production, lot of small files (apache
> webroot mounts mostly). I've seen a bunch of split-brain and self-heal
> failing when I first did the switch. After I removed and recreated the
> dirs it seemed to be fine for about a week now; yeah not long, I know.
>
> I 2^nd the notion that it'd be nice to see a list of what files/dirs
> gluster thinks is out of sync or can't heal. Right now you gotta go
> diving into the logs.
>
> I'm actually thinking of downgrading to 3.1.3 from 3.2.0. Wonder if I'd
> have any ill-effects on the volume with a simple rpm downgrade and
> daemon restart.

I've been using 3.2.0 for a while, but I had a problem with userspace 
programs "hanging" on accessing some files on the gluster mount 
(described here on the list).

I downgraded to 3.1.4 (remove 3.2.0 rpm and config, install 3.1.4 rpm, 
add nodes) and it works fine for me.

3.0.x was also crashing for me when SSHFS-like mount was used to the 
server with gluster mount (and reads/writes were made from the gluster 
mount through it).



-- 
Tomasz Chmielewski
http://wpkg.org
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