bugGluster - Bugs: bug #19253, ALU min-free-disk continues to...

 
 

bug #19253: ALU min-free-disk continues to create files

Submitter:  A. D Auria <adauria>
Submitted:  Fri 09 Mar 2007 11:13:44 AM UTC
   
 
Category:  GlusterFS Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Improper behaviour
Status:  Fixed Privacy:  Public
Assigned to:  amarts Originator Name:  *
Open/Closed:  Closed Release: 
Operating System:  GNU/Linux Reproducibility:  None
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Fri 09 Mar 2007 11:45:37 AM UTC, comment #1: 

forgot to add version info:
1.3.0-pre2.2
Fuse 2.6.3
gentoo kernel v2.6.20


A. D Auria <adauria>
Fri 09 Mar 2007 11:13:44 AM UTC, original submission:  

[Client configuration....]
volume bricks
 type cluster/unify
 subvolumes oss1c oss2c oss3c oss4c
 option scheduler alu
 option alu.limits.min-free-disk  60GB
 option alu.limits.max-open-files 10000
 option alu.order disk-usage:read-usage:write-usage:open-files-usage:disk-speed-usage
 option alu.disk-usage.entry-threshold 2GB
 option alu.disk-usage.exit-threshold  60MB
 option alu.open-files-usage.entry-threshold 1024
 option alu.open-files-usage.exit-threshold 32
 option alu.stat-refresh.interval 10sec
end-volume

On a 4 brick system...
oss1c  2.3T  2.3T  4.6G 100%
oss2c  2.8T  2.6T  220G  93%
oss3c  3.7T  2.6T  1.2T  70%
oss4c  2.8T  2.6T  220G  93%

[Observation....]
When writing to the unified cluster, although creates to oss1c, the smallest brick, did slow down, they did not stop.  Our testing ceased when there was less than 5GB free space left on oss1c.  This was well beyond the 60GB minimum that was set in the options.

The characteristics of the files being created are:
- new directory created every 10 minutes
- old files closed in old directory
- new file(s) created when new directory is created
- no individual file exceeds 1GB in size (when 1GB limit reached, a new file is created)

Thus, no file is remaining open or being extended in such a way as to grow this far beyond the 60GB limit.


A. D Auria <adauria>

 

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2007-05-06 avati StatusNone Fixed
        Assigned toNone amarts
        Open/ClosedOpen Closed

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