[Gluster-devel] glusterfs and email store problem.

[jeff at bofus.org]

I am obviously new to glusterfs, however, I thought I had enabled 
posix-locks?

volume posix-locks-knworksmail
 type features/posix-locks
 option mandatory on
 subvolumes knworksmail
end-volume

or am I missing something?

-JPH

Daniel van Ham Colchete wrote:
> Jeff,
>
> reading the dovecot website, I saw this: Dovecot allows mailboxes and 
> their indexes to be modified by multiple computers at the same time, 
> while still performing well. This means that Dovecot works with NFS 
> and clustered filesystems.
>
> The only way of doing this is using locks (flock or fnctl). Try 
> activating posix-locks.
>
> I had a similar problem with maildrop recently. Because fnctl wasn't 
> working it wouldn't change one file and report a filesystem error.
>
> Although, this doesn't explain the error message in the log, this is 
> one problem you also have to solve.
>
> Best,
> Daniel
>
> On Nov 7, 2007 4:12 PM, jeff at bofus.org <mailto:jeff at bofus.org> 
> <jeff at bofus.org <mailto:jeff at bofus.org>> wrote:
>
>     I am hoping someone can shed some light on this issue for me.
>
>     version info first:
>
>     server OS:    CentOS release 4.5 (Final)
>     fuse:    fuse-2.7.0-glfs5
>     glusterfs:   glusterfs-1.3.7
>
>     client OS:   CentOS release 4.5 (Final)
>     fuse:    fuse-2.7.0-glfs5
>     glusterfs:   glusterfs-1.3.7
>
>     Mount:
>     glusterfs on /mnt/glusterfs type fuse
>     (rw,nosuid,nodev,allow_other,default_permissions,max_read=1048576)
>
>     Configuration contents listed below issue.
>
>     Issue:
>     Looking at the logs on my mail (dovecot) server, I see the
>     following errors:
>     mmap() failed with index file
>     /opt/GFS/postfix/vmail/jeff@ bofus.org/.Trash/.imap.index
>     <http://bofus.org/.Trash/.imap.index>: No such device
>     mmap() failed with custom flags file
>     /opt/GFS/postfix/vmail/jeff at bofus.org/.Trash/.customflags
>     <http://bofus.org/.Trash/.customflags>: No such device
>
>     These of course are on the gluster mount, and the files really do
>     exist:
>     -rw-------  1 vmail vmail 6816 Nov  5 21:07
>     /opt/GFS/postfix/vmail/jeff@ bofus.org/.Trash/.imap.index
>     -rw------- <http://bofus.org/.Trash/.imap.index-rw------->  1
>     vmail vmail 100 Oct 15 14:11
>     /opt/GFS/postfix/vmail/jeff at bofus.org/.Trash/.customflags
>     <http://bofus.org/.Trash/.customflags>
>
>     I was not using posix-locks at first and this same type issue came up
>     but with the .subscription file.  I am not sure whether including
>     posix-locks or the restart/remount required to enable it fixed this
>     issue for the .subscription file.
>
>     This does not happen when I use a plain ext3 local disk mountpoint.
>     Only on glusterfs mountpoint.
>     Does anyone know why the files say "No such device" when they are
>     clearly there on the filesystem?
>
>     Thanks for any assistance!
>
>     -Jeff Humes
>
>
>
>
>
>     #################################
>     # server config:
>     volume knworksmail
>      type storage/posix
>      option directory /glusterfs/knworksmail
>     end-volume
>
>     volume posix-locks-knworksmail
>      type features/posix-locks
>      option mandatory on
>      subvolumes knworksmail
>     end-volume
>
>     volume server
>      type protocol/server
>      option transport-type tcp/server
>      subvolumes posix-locks-knworksmail
>      option auth.ip.knworksmail.allow *
>      option auth.ip.posix-locks-knworksmail.allow *
>     end-volume
>
>     volume writebehind
>      type performance/write-behind
>      option aggregate-size 1MB
>      option flush-behind on
>      subvolumes knworksmail
>     end-volume
>
>     #################################
>     # client config:
>     volume gluster01
>      type protocol/client
>      option transport-type tcp/client
>      option remote-host 10.1.2.226 <http://10.1.2.226>
>      #option remote-subvolume knworksmail
>      option remote-subvolume posix-locks-knworksmail
>     end-volume
>
>     volume writebehind
>      type performance/write-behind
>      option aggregate-size 131072
>      subvolumes gluster01
>     end-volume
>
>
>
>
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