[Gluster-devel] Trying to run a mailcluster

[Guido Smit]

Hi all,

I'm trying to set up a mailcluster for a while now, using glusterfs as 
filesystem. I've installed fuse2.7.2glfs8, glusterfs-tla662 on Centos5

As for now, running on 3 servers. 1 configured as dedicated server, 1 as 
client only, 1 as server and client.

Normal file operations are doing great, speed can be a little faster, 
but overall I'm happy with it. When starting Dovecot, the following 
error shows up (1st line repeats for every client that logs in):

2008-02-15 14:27:43 E [afr.c:3730:afr_lk_cbk] afr: 
(path=/comlog.nl/xxxxxxxxx/Maildir/dovecot.index.log child=pop2-mail) 
op_ret=-1 op_errno=77
2008-02-15 14:30:52 C [client-protocol.c:222:call_bail] pop2-mail-ns: 
bailing transport
2008-02-15 14:30:52 C [client-protocol.c:222:call_bail] pop2-mail: 
bailing transport
2008-02-15 14:32:40 C [client-protocol.c:222:call_bail] pop2-mail-ns: 
bailing transport

Everything stalls, no ls, no df nothing. I have to kill all dovecot 
processes, kill glusterfs and glusterfsd
I've tried with an empty namespace on both servers, but it didn't 
resolve this.

I really need some advise here.

My configs:
glusterfs-server.vol

volume pop1-mail-ns
        type storage/posix
        option directory /home/namespace
end-volume

volume pop1-mail-ds
        type storage/posix
        option directory /home/export
end-volume

volume pop1-mail
        type features/posix-locks
        option mandatory on                     # enables mandatory 
locking on all files
        subvolumes pop1-mail-ds
end-volume

volume pop2-mail
        type protocol/client
        option transport-type tcp/client
        option remote-host 62.59.252.42
        option remote-subvolume pop2-mail-ds
end-volume

volume pop2-mail-ns
        type protocol/client
        option transport-type tcp/client
        option remote-host 62.59.252.42
        option remote-subvolume pop2-mail-ns
end-volume

volume afr
        type cluster/afr
        subvolumes pop1-mail pop2-mail
end-volume

volume afr-ns
       type cluster/afr
       subvolumes pop1-mail-ns pop2-mail-ns
end-volume

volume unify
        type cluster/unify
        option namespace afr-ns
        option scheduler rr
        subvolumes afr
end-volume

volume mail-ds-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 mail-ds-writebehind
        type performance/write-behind
        option aggregate-size 1MB               # default is 0bytes
        option flush-behind on                  # default is 'off'
        subvolumes mail-ds-readahead
end-volume

volume mail-ds
        type performance/io-threads
        option thread-count 4                   # deault is 1
        option cache-size 32MB                  #64MB
        subvolumes mail-ds-writebehind
end-volume

volume server
        type protocol/server
        option transport-type tcp/server
        subvolumes pop1-mail-ds pop1-mail-ns mail-ds
        option auth.ip.pop1-mail-ds.allow 62.59.252.*,127.0.0.1
        option auth.ip.pop1-mail-ns.allow 62.59.252.*,127.0.0.1
        option auth.ip.mail-ds.allow 62.59.252.*,127.0.0.1
end-volume


glusterfs-client.vol:

volume mailspool
        type protocol/client
        option transport-type tcp/client
        option remote-host 62.59.252.41
        option remote-subvolume mail-ds
end-volume

volume readahead
        type performance/read-ahead
        option page-size 128kB
        option page-count 16
        option force-atime-update off # default is off
        subvolumes mailspool
end-volume

volume writeback
        type performance/write-behind
        option aggregate-size 1MB
        option flush-behind on      # default is 'off'
        subvolumes readahead
end-volume

volume iothreads
        type performance/io-threads
        option thread-count 4  # deault is 1
        option cache-size 32MB #64MB
        subvolumes writeback
end-volume

volume io-cache
        type performance/io-cache
        option cache-size 128MB             # 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 iothreads
end-volume



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