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From Andres de la Peña (Jira) <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-16104) Wrong warning about data volumes capacity
Date Fri, 23 Jul 2021 12:10:00 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-16104?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17386199#comment-17386199
] 

Andres de la Peña commented on CASSANDRA-16104:
-----------------------------------------------

As suggested by [~Bereng] and [~djatnieks], from 4.0 we can have [a JUnit test|https://github.com/adelapena/cassandra/blob/38c1a41ddeb1b75f9c57a3ec6900d8638c01ddb2/test/unit/org/apache/cassandra/tools/NodeProbeTest.java]
instead of the Python dtest. I have added it to the patches, rebased and rerun CI:
||patch||CI||
|[3.0|https://github.com/apache/cassandra/compare/cassandra-3.0...adelapena:16104-3.0]|[j8|https://app.circleci.com/pipelines/github/adelapena/cassandra/691/workflows/4f824afb-9fdf-438f-b50d-6c571fde297b]|
|[3.11|https://github.com/apache/cassandra/compare/cassandra-3.11...adelapena:16104-3.11]|[j8|https://app.circleci.com/pipelines/github/adelapena/cassandra/692/workflows/efc91371-1999-47f3-acb6-21a1024e1bd2]|
|[4.0|https://github.com/apache/cassandra/compare/cassandra-4.0...adelapena:16104-4.0]|[j8|https://app.circleci.com/pipelines/github/adelapena/cassandra/693/workflows/66bbd6bc-1656-4c3f-9723-769842b875a0]
[j11|https://app.circleci.com/pipelines/github/adelapena/cassandra/693/workflows/5bd5ca40-e019-472a-8278-b27a65f8cabe]|
|[trunk|https://github.com/apache/cassandra/compare/trunk...adelapena:16104-trunk]|[j8|https://app.circleci.com/pipelines/github/adelapena/cassandra/694/workflows/c390058b-8a7b-4e12-871a-41b26f19dfb1]
[j11|https://app.circleci.com/pipelines/github/adelapena/cassandra/694/workflows/f55ab5a3-770b-46e8-9052-be00232884bb]|
|[dtest|https://github.com/apache/cassandra-dtest/compare/trunk...adelapena:CASSANDRA-16104]|

If that looks good we'll only need the approval of a second reviewer.

> Wrong warning about data volumes capacity
> -----------------------------------------
>
>                 Key: CASSANDRA-16104
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-16104
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Tool/nodetool
>            Reporter: Dmitrii Saprykin
>            Assignee: Dmitrii Saprykin
>            Priority: Normal
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> I see the following warning trying to run *nodetool upgradesstables*
> {noformat}
> WARN  16:09:24 Only 34988 MB free across all data volumes. Consider adding more capacity
to your cluster or removing obsolete snapshots
> {noformat}
> This warning is wrong because the wrong storage device capacity gets tested.
> All my cassandra data paths are subdirectories of */data* mount point which has enough
of space:
> {noformat}
> $ df -h /data
> Filesystem      Size  Used Avail Mounted on
> .................     1.2T 200G  1T  /data
> {noformat}
> However what Warning reports is a OS mount which has nothing to do with Cassandra configuration:
> {noformat}
> df -h /
> Filesystem      Size  Used Avail Use% Mounted on
> ............        40G  5.7G   35G  15% /
> {noformat}
> I see this error running Cassandra 3.0.22



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