[Gluster-devel] [bug #19253] ALU min-free-disk continues to create files
A. D Auria
INVALID.NOREPLY at gnu.org
Fri Mar 9 11:13:45 UTC 2007
URL:
<http://savannah.nongnu.org/bugs/?19253>
Summary: ALU min-free-disk continues to create files
Project: Gluster
Submitted by: adauria
Submitted on: Friday 03/09/2007 at 11:13
Category: GlusterFS
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Improper behaviour
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Operating System: GNU/Linux
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Details:
[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.
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