[Gluster-users] Files go missing on Gluster

[Anand Avati]

Gerd,
  Can you check if the files are available in the backend but not accessible
from the mountpoint or, have gone missing altogether?

Avati

On Fri, Apr 15, 2011 at 12:49 AM, Gerd W. Naschenweng <
gerd.naschenweng at bidorbuy.co.za> wrote:

> This is highly frustrating and we notice that uploaded images disappear
> after users upload images.
>
> Background:
> Latest version of Gluster running on CentOS 64bit
> We have two replicated bricks
> The volume is mounted via NFS on our image servers (10.0.0.210:/shared_images
> /data             nfs     defaults,_netdev 0 0 / 10.0.0.211:/shared_images
> /data          nfs     defaults,_netdev 0 0)
> The image servers run CentOS 64bit and use Apache HTTP and Tomcat as the
> application server
> Users upload images via the web and Tomcat writes the file with a unique
> name to the NFS file-system
> We use ImageMagick mogrify to resize the image. This takes a few
> milliseconds (see log-file entry below)
> In certain instances images go missing some time after the upload (the
> users typically check their uploads and the images seem to disappear hours
> afterwards)
>
>
> Gluster configuration:
> Type: Replicate
> Status: Started
> Number of Bricks: 2
> Transport-type: tcp
> Bricks:
> Brick1: 10.0.0.210:/data
> Brick2: 10.0.0.211:/data
> Options Reconfigured:
> performance.cache-size: 1000MB
> performance.cache-refresh-timeout: 5
> performance.io-cache: on
> performance.read-ahead: off
> performance.io-thread-count: 16
> performance.stat-prefetch: on
> performance.write-behind: off
> performance.quick-read: on
>
>
> http://images.bidorbuy.co.za/user_images/974/931974_110412195059_RSA_REDCross.jpg
> M/M 12/04/11 19:51:12 ajp-127.0.0.1-8009-2 ImageUploadInterface Optimised
> Image with : mogrify -resize 500 -quality 75%
> /home/prodza/webapp/user_images/974/931974_110412195059_RSA_REDCross.jpg
> M/M 12/04/11 19:51:12 ajp-127.0.0.1-8009-2
> IMAGEUPLOAD:uploadms:12812:compressms:160:uploadbytes:169494:compressbytes:26924:filepath:/home/prodza/webapp/user_images/974/931974_110412195059_RSA_REDCross.jpg
> M/M 12/04/11 19:51:12 ajp-127.0.0.1-8009-2 ImageUploadInterface Loaded
> Image:User:931974:Size:169494:Time:12975:
> http://images.bidorbuy.co.za/user_images/974/931974_110412195059_RSA_REDCross.jpg
>
>
> http://images.bidorbuy.co.za/user_images/974/931974_110412223337_VerwoerdFS.jpg
> M/M 12/04/11 22:33:53 ajp-127.0.0.1-8009-1 ImageUploadInterface Optimised
> Image with : mogrify -resize 500 -quality 75%
> /home/prodza/webapp/user_images/974/931974_110412223337_VerwoerdFS.jpg
> M/M 12/04/11 22:33:53 ajp-127.0.0.1-8009-1
> IMAGEUPLOAD:uploadms:16245:compressms:320:uploadbytes:218430:compressbytes:168941:filepath:/home/prodza/webapp/user_images/974/931974_110412223337_VerwoerdFS.jpg
> M/M 12/04/11 22:33:53 ajp-127.0.0.1-8009-1 ImageUploadInterface Loaded
> Image:User:931974:Size:218430:Time:16569:
> http://images.bidorbuy.co.za/user_images/974/931974_110412223337_VerwoerdFS.jpg
>
>
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