Daniel,
I have used strace before. I attached it with forking to the parent
dovecot process and reproduced the issue.
http://gluster.pastebin.com/m731ca211
I pasted in in the above pastebin
Thanks!
-JPH
Daniel van Ham Colchete wrote:
Sorry pal, my bad... I read it wrong :). You are using posix-locks.
Is there a way to run the command getting the error through strace
when it occours? Strace shows every call made to the filesystem by the
software and show you the return value of each call.
With strace -a you can attach it to a process, them you have to force
the error, and them check to see what's going on. If you can't find
it, past the result at http://gluster.pastebin.com/
<http://gluster.pastebin.com/> and show it to us please. Try to narrow
the moment of the error as such as possible in the strace log as it
can get quiet big. Using strace -tt or -ttt (I'm not sure) will help
you with that.
Best,
Daniel
On Nov 7, 2007 4:48 PM, jeff@xxxxxxxxx <mailto:jeff@xxxxxxxxx>
<jeff@xxxxxxxxx <mailto:jeff@xxxxxxxxx>> wrote:
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@xxxxxxxxx <mailto:jeff@xxxxxxxxx>
<jeff@xxxxxxxxx <mailto:jeff@xxxxxxxxx>> 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@xxxxxxxxx/.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@xxxxxxxxx/.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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