Pending fcntl locks found!

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Keith Freedman a ?crit :
> all of a sudden, I'm getting messages such as this:
>
> 2009-03-13 23:14:06 C [posix.c:709:pl_forget] posix-locks-home1: 
> Pending fcntl locks found!
>
> and some processes are hanging waiting presumably for the locks?
> any way to find out what files are being locked and unlock them.
> restarting gluster doesn't seem to solve the problem.
>

Hi,

I'm facing same problem with rc7, causing the server to use 100% of the 
CPU, and clients are unables to access files, waiting for something... I 
have to remove the glusterfs stack from our production environment, back 
to local hard drives... See attached CPU graphs of both servers.

Config:
# file: /etc/glusterfs/glusterfsd.vol

#
# Volumes
#
volume media-small
        type storage/posix
        option directory /var/local/glusterfs/media_small
end-volume

volume media-medium
        type storage/posix
        option directory /var/local/glusterfs/media_medium
end-volume

# Lock posix
volume media-small-locks
        type features/posix-locks
        option mandatory-locks on
        subvolumes media-small
#       subvolumes trash # enable this if you need trash can support 
(NOTE: not present in 1.3.0-pre5+ releases)
end-volume

volume media-medium-locks
        type features/posix-locks
        option mandatory-locks on
        subvolumes media-medium
#       subvolumes trash # enable this if you need trash can support 
(NOTE: not present in 1.3.0-pre5+ releases)
end-volume


#
# Performance
#
volume media-small-iot
        type performance/io-threads
        subvolumes media-small-locks
        option thread-count 4 # default value is 1
end-volume

volume media-small-ioc
        type performance/io-cache
        option cache-size 128MB         # default is 32MB
        option page-size 128KB          # default is 128KB
        subvolumes media-small-iot
end-volume

volume media-small-wb
        type performance/write-behind
        #option flush-behind on         # default is off
        subvolumes media-small-ioc
end-volume

volume media-small-ra
        type performance/read-ahead
        subvolumes media-small-wb
        option page-size 256KB          # default is 256KB
        option page-count 4             # default is 2 - cache per file 
= (page-count x page-size)
        option force-atime-update no    # defalut is 'no'
end-volume


volume media-medium-iot
        type performance/io-threads
        subvolumes media-medium-locks
        option thread-count 4 # default value is 1
end-volume

volume media-medium-ioc
        type performance/io-cache
        option cache-size 128MB         # default is 32MB
        option page-size 128KB          # default is 128KB
        subvolumes media-medium-iot
end-volume

volume media-medium-wb
        type performance/write-behind
        #option flush-behind on         # default is off
        subvolumes media-medium-ioc
end-volume

volume media-medium-ra
        type performance/read-ahead
        subvolumes media-medium-wb
        option page-size 256KB          # default is 256KB
        option page-count 4             # default is 2 - cache per file 
= (page-count x page-size)
        option force-atime-update no    # defalut is 'no'
end-volume




#
# Serveur
#
volume server
        type protocol/server
        option transport-type tcp/server
        option auth.addr.media-small-ra.allow 10.0.*.*
        option auth.addr.media-medium-ra.allow 10.0.*.*
        # Autoconfiguration, e.g. :
        # glusterfs -l /tmp/glusterfs.log --server=filer-04 ./Cache
        option client-volume-filename /etc/glusterfs/glusterfs.vol
        subvolumes media-small-ra media-medium-ra # volumes export?s
end-volume

# file: /etc/glusterfs/glusterfs.vol


#
# Clients
#
volume media-small-filer-04
        type protocol/client
        option transport-type tcp/client
        option remote-host filer-04.local
        option remote-subvolume media-small-ra
end-volume

volume media-small-filer-05
        type protocol/client
        option transport-type tcp/client
        option remote-host filer-05.local
        option remote-subvolume media-small-ra
end-volume

volume media-medium-filer-04
        type protocol/client
        option transport-type tcp/client
        option remote-host filer-04.local
        option remote-subvolume media-medium-ra
end-volume

volume media-medium-filer-05
        type protocol/client
        option transport-type tcp/client
        option remote-host filer-05.local
        option remote-subvolume media-medium-ra
end-volume


#
# Volume principal
#
volume afr-small
        # AFR has been renamed to "Replicate" for simplicity.
        type cluster/replicate
        # Il faut mettre le serveur avec le moins d'espace disque en 1er :
        # "When doing a "df -h" on a client, the AVAILABLE disk space 
will display the maximum disk space of the first AFR sub volume defined 
in the spec file. So if you have two servers with 50 gigs and 100 gigs 
of free disk space, and the server with 100 gigs is listed first, then 
you will see 100 gigs available even though one server only has 50 gigs 
free. "
        subvolumes media-small-filer-04 media-small-filer-05
end-volume

volume afr-medium
        # AFR has been renamed to "Replicate" for simplicity.
        type cluster/replicate
        subvolumes media-medium-filer-04 media-medium-filer-05
end-volume

#
# Performance
#
volume iot-small
        type performance/io-threads
        option thread-count 8  # default is 1
        subvolumes afr-small
end-volume

volume readahead-small
        type performance/read-ahead
        subvolumes iot-small
        option page-size 1MB         # default is 256KB
        option page-count 4          # default is 2 - cache per file = 
(page-count x page-size)
        option force-atime-update no # defalut is 'no'
end-volume

volume iocache-small
        type performance/io-cache
        option cache-size 64MB          # default is 32MB
        option page-size 256KB          # default is 128KB
        subvolumes readahead-small
end-volume

volume wb-small
        type performance/write-behind
        option window-size 1MB # max 4MB
        option flush-behind on # default is off
        subvolumes iocache-small
end-volume

volume iot-medium
        type performance/io-threads
        option thread-count 8  # default is 1
        subvolumes afr-medium
end-volume

volume readahead-medium
        type performance/read-ahead
        subvolumes iot-medium
        option page-size 1MB         # default is 256KB
        option page-count 4          # default is 2 - cache per file = 
(page-count x page-size)
        option force-atime-update no # defalut is 'no'
end-volume

volume iocache-medium
        type performance/io-cache
        option cache-size 64MB          # default is 32MB
        option page-size 256KB          # default is 128KB
        subvolumes readahead-medium
end-volume

volume wb-medium
        type performance/write-behind
        option window-size 1MB # max 4MB
        option flush-behind on # default is off
        subvolumes iocache-medium
end-volume


Best regards,

-- 
Greg

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